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12 years agopowerpc/85xx: Add P1024rdb dts support
Tang Yuantian [Thu, 24 May 2012 09:08:27 +0000 (17:08 +0800)]
powerpc/85xx: Add P1024rdb dts support

Signed-off-by: Jin Qing <b24347@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Add P1024rdb board support
Tang Yuantian [Thu, 24 May 2012 09:08:28 +0000 (17:08 +0800)]
powerpc/85xx: Add P1024rdb board support

The p1024rdb has the similar feature as the p1020rdb. Therefore, p1024rdb use
the same platform file as the p1/p2 rdb board.
Overview of P2020RDB platform
- DDR3 1G
- NOR flash 16M
- 3 Ethernet interfaces
- NAND Flash 32M
- SPI EEPROM 16M
- SD/MMC
- 2 USB ports
- 4 TDM ports

Signed-off-by: Jin Qing <b24347@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/p1010rdb: add EEPROMs to device tree
Gustavo Zacarias [Wed, 23 May 2012 14:35:18 +0000 (11:35 -0300)]
powerpc/p1010rdb: add EEPROMs to device tree

Add EEPROM to the P1010RDB device tree.
The 24c01 acts as a memory SPD so it shouldn't be overwritten without
care.
The 24c256 is a general purpose memory.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agoRevert "powerpc/85xx: p2020rdb - move the NAND address."
Sebastian Andrzej Siewior [Wed, 9 May 2012 19:53:07 +0000 (21:53 +0200)]
Revert "powerpc/85xx: p2020rdb - move the NAND address."

This reverts commit 0c00f65653389a408dfbbee7578e671664eea26a.
The initial commit was my fault. There are two boards out there:
P2020RDB and P2020RDB-PC. I wasn't aware of that and assumed that I have
a RDB board in front of me while I the RDB-PC. This patch makes it work
for the RDB-PC variant and breaks it for the RDB. Now there is a device
tree file available for the RDB-PC which was not there earlier. So with
this revert, everything gets back to normal :)

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/82xx: add SPI support for mgcoge
Holger Brunck [Tue, 8 May 2012 13:57:22 +0000 (15:57 +0200)]
powerpc/82xx: add SPI support for mgcoge

Add spi support for mgcoge into the platform code and the dts
file. Additionaly SPIDEV is switched on in the defconfig and the
updates for the newer kernel version are committed. The SPI
interface is used to drive the Maxim DS3106 clock chip.

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
cc: Heiko Schocher <hs@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/83xx: update defconfig for kmeter1
Holger Brunck [Tue, 8 May 2012 13:57:21 +0000 (15:57 +0200)]
powerpc/83xx: update defconfig for kmeter1

Switch on UBIFS, HOTPLUG and TIPC and update the config to
the latest kernel version.

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
cc: Heiko Schocher <hs@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/83xx: fix RGMII AC values workaround for km83xx
Christian Herzig [Tue, 8 May 2012 13:57:20 +0000 (15:57 +0200)]
powerpc/83xx: fix RGMII AC values workaround for km83xx

Fix RGMII workaround code in km83xx.c for MPC8360E and MPC8358E that it
correctly identifes all affected SoC chip models and applies the
workarounds appropriate for 2.0 and 2.1 revisions as per Freescale
MPC8360ECE Errata document Rev.5(9/2011) item QE_ENET10.

Signed-off-by: Christian Herzig <christian.herzig@keymile.com>
Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
cc: Heiko Schocher <hs@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/83xx: use for_each_node_by_name for km83xx.c
Holger Brunck [Tue, 8 May 2012 13:57:19 +0000 (15:57 +0200)]
powerpc/83xx: use for_each_node_by_name for km83xx.c

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
cc: Heiko Schocher <hs@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/p1022ds: Add RTC support
Jerry Huang [Tue, 17 Apr 2012 01:42:35 +0000 (09:42 +0800)]
powerpc/p1022ds: Add RTC support

Add the RTC support into the p1022ds device tree

Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Enable MTD/NOR/NAND options by default in defconfig
Shengzhou Liu [Fri, 27 Apr 2012 03:01:00 +0000 (11:01 +0800)]
powerpc/85xx: Enable MTD/NOR/NAND options by default in defconfig

Enable MTD/NOR/NAND options by default in mpc85xx_defconfig and
mpc85xx_smp_defconfig to support NOR, NAND flash.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/fsl: Distribute interrupts on all CPUs by default
Kim Phillips [Fri, 13 Apr 2012 22:26:15 +0000 (17:26 -0500)]
powerpc/fsl: Distribute interrupts on all CPUs by default

At least for crypto/IPSec, doing so provides users with a better
performance experience out of the box.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/fsl/pci: Fix when quirk_fsl_pcie_header is freed up
Matias Garcia [Mon, 19 Sep 2011 15:35:11 +0000 (11:35 -0400)]
powerpc/fsl/pci: Fix when quirk_fsl_pcie_header is freed up

Change quirk_fsl_pcie_header from __init to __devinit to ensure if we
have a runtime access (like via an FPGA being loaded after boot on the
PCIe link) that we dont access randomly freed memory.

Signed-off-by: Matias Garcia <mgarcia@rossvideo.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc: Turn on BPF_JIT in ppc64_defconfig
Michael Ellerman [Thu, 21 Jun 2012 17:52:29 +0000 (17:52 +0000)]
powerpc: Turn on BPF_JIT in ppc64_defconfig

Matt added BPF_JIT support in commit 0ca87f05, but currently none of our
defconfigs build it. Turn that sucker on.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: IOMMU fault injection
Anton Blanchard [Sun, 24 Jun 2012 18:26:17 +0000 (18:26 +0000)]
powerpc: IOMMU fault injection

Add the ability to inject IOMMU faults. We enable this per device
via a fail_iommu sysfs property, similar to fault injection on other
subsystems.

An example:

...
0003:01:00.1 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev 02)

To inject one error to this device:

echo 1 > /sys/bus/pci/devices/0003:01:00.1/fail_iommu
echo 1 > /sys/kernel/debug/fail_iommu/probability
echo 1 > /sys/kernel/debug/fail_iommu/times

As feared, the first failure injected on the be3 results in an
unrecoverable error, taking down both functions of the card
permanently:

be2net 0003:01:00.1: Unrecoverable error in the card

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Call dma_debug_add_bus for PCI and VIO buses
Anton Blanchard [Sun, 24 Jun 2012 18:25:28 +0000 (18:25 +0000)]
powerpc: Call dma_debug_add_bus for PCI and VIO buses

The DMA API debug code has hooks to verify all DMA entries have been
freed at time of hot unplug. We need to call dma_debug_add_bus for
this to work.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/vio: Separate vio bus probe and device probe
Anton Blanchard [Sun, 24 Jun 2012 18:24:44 +0000 (18:24 +0000)]
powerpc/vio: Separate vio bus probe and device probe

Similar to PCI, separate the bus probe from device probe. This allows
us to attach bus notifiers for DMA debug and IOMMU fault injection
before devices have been probed.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/vio: Remove dma not supported warnings
Anton Blanchard [Sun, 24 Jun 2012 18:23:53 +0000 (18:23 +0000)]
powerpc/vio: Remove dma not supported warnings

During boot we see a number of these warnings:

vio 30000000: Warning: IOMMU dma not supported: mask 0xffffffffffffffff, table unavailable

The reason for this is that we set IOMMU properties for all VIO
devices even if they are not DMA capable.

Only set DMA ops, table and mask for devices with a DMA window.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/pseries: Fix whitespace in eeh
Michael Neuling [Tue, 26 Jun 2012 18:12:01 +0000 (18:12 +0000)]
powerpc/pseries: Fix whitespace in eeh

Signed-off-by: Michael Neuling <mikey@neuling.org>
Acked-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/perf: Use perf_instruction_pointer in callchains
Anton Blanchard [Tue, 26 Jun 2012 01:04:20 +0000 (01:04 +0000)]
powerpc/perf: Use perf_instruction_pointer in callchains

We use SIAR or regs->nip for the instruction pointer depending on
the PMU configuration, but we always use regs->nip in the callchain.

Use perf_instruction_pointer so the backtrace is consistent.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/perf: Always use pt_regs for userspace samples
Anton Blanchard [Tue, 26 Jun 2012 01:02:15 +0000 (01:02 +0000)]
powerpc/perf: Always use pt_regs for userspace samples

At the moment we always use the SIAR if the PMU supports continuous
sampling. Unfortunately the SIAR and the PMU exception are not
synchronised for non marked events so we can end up with callchains
that dont make sense.

The following patch checks the HV and PR bits for samples coming from
userspace and always uses pt_regs for them. Userspace will never have
interrupts off so there is no real advantage to using the SIAR for
non marked events in userspace.

I had experimented with a patch that did a similar thing for kernel
samples but we lost a significant amount of information. I was
unable to profile any of our early exception code for example.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/perf: Move code to select SIAR or pt_regs into perf_read_regs
Anton Blanchard [Tue, 26 Jun 2012 01:01:36 +0000 (01:01 +0000)]
powerpc/perf: Move code to select SIAR or pt_regs into perf_read_regs

The logic to choose whether to use the SIAR or get the information
out of pt_regs is going to get more complicated, so do it once in
perf_read_regs.

We overload regs->result which is gross but we are already doing it
with regs->dsisr.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/perf: Create mmcra_sihv/mmcra_sipv helpers
Anton Blanchard [Tue, 26 Jun 2012 01:00:13 +0000 (01:00 +0000)]
powerpc/perf: Create mmcra_sihv/mmcra_sipv helpers

We want to access the MMCRA_SIHV and MMCRA_SIPR bits elsewhere so
create mmcra_sihv and mmcra_sipr which hide the differences between
the old and new layout of the bits.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Enforce usage of RA 0-R31 where possible
Michael Neuling [Mon, 25 Jun 2012 13:33:25 +0000 (13:33 +0000)]
powerpc: Enforce usage of RA 0-R31 where possible

Some macros use RA where when RA=R0 the values is 0, so make this
the enforced mnemonic in the macro.

Idea suggested by Andreas Schwab.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Add defines for RA 0-R31
Michael Neuling [Mon, 25 Jun 2012 13:33:24 +0000 (13:33 +0000)]
powerpc: Add defines for RA 0-R31

R0 is special since it'll be 0.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Enforce usage of R0-R31 where possible
Michael Neuling [Mon, 25 Jun 2012 13:33:23 +0000 (13:33 +0000)]
powerpc: Enforce usage of R0-R31 where possible

Enforce the use of R0-R31 in macros where possible now we have all the
fixes in.

R0-R31 macros are removed here so that can't be used anymore.  They
should not be defined anywhere.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Introduce new __REG_R macros
Michael Neuling [Mon, 25 Jun 2012 13:33:22 +0000 (13:33 +0000)]
powerpc: Introduce new __REG_R macros

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Start using ___PPC_RA/B/S/T where necessary
Michael Neuling [Mon, 25 Jun 2012 13:33:21 +0000 (13:33 +0000)]
powerpc: Start using ___PPC_RA/B/S/T where necessary

Now have ___PPC_RA/B/S/T we can use it in some places.  These are
places where we can't use the existing defines which will soon enforce
R0-R31 usage.

The macros being changed here are being used in inline asm, which
can't convert to enforce the R0-R31 usage.

bpf_jit uses a mix of both generated and non-generated with the same
code, so just convert all these to use the ___PPC_R versions which
won't enforce R usage later.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Introduce new ___PPC_RA/B/S/T macros
Michael Neuling [Mon, 25 Jun 2012 13:33:20 +0000 (13:33 +0000)]
powerpc: Introduce new ___PPC_RA/B/S/T macros

These are currently the same as __PPC_RA/B/S/T but we'll wrap them
soon.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Fix VSX macros so register names aren't wrapped
Michael Neuling [Mon, 25 Jun 2012 13:33:19 +0000 (13:33 +0000)]
powerpc: Fix VSX macros so register names aren't wrapped

We need to do this so we can enforce the name of a and b in called
macros PPC_RA/B later.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Fixes for instructions not using correct register naming
Michael Neuling [Mon, 25 Jun 2012 13:33:18 +0000 (13:33 +0000)]
powerpc: Fixes for instructions not using correct register naming

These macros are using integers where they could be using logical
names since they take registers.

We are going to enforce this soon, so fix these up now.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Change LOAD_REG_ADDR to use real register names
Michael Neuling [Mon, 25 Jun 2012 13:33:17 +0000 (13:33 +0000)]
powerpc: Change LOAD_REG_ADDR to use real register names

LOAD_REG_ADDR define is just a wrapper around real instructions so we
can just use real register names here (ie. lower case).

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Change mtcrf to use real register names
Michael Neuling [Mon, 25 Jun 2012 13:33:16 +0000 (13:33 +0000)]
powerpc: Change mtcrf to use real register names

mtocrf define is just a wrapper around the real instructions so we can
just use real register names here (ie. lower case).

Also remove braces in macro so this is possible.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Move and fix MTMSR_EERI definition
Benjamin Herrenschmidt [Wed, 4 Jul 2012 04:49:12 +0000 (14:49 +1000)]
powerpc: Move and fix MTMSR_EERI definition

Move this duplicated definition to ppc_asm.h and remove the
braces which prevent the use of %rN register names

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Merge VCPU_GPR
Michael Neuling [Mon, 25 Jun 2012 13:33:15 +0000 (13:33 +0000)]
powerpc: Merge VCPU_GPR

Merge the defines of VCPU_GPR from different places.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Merge STK_REG/PARAM/FRAMESIZE
Michael Neuling [Mon, 25 Jun 2012 13:33:14 +0000 (13:33 +0000)]
powerpc: Merge STK_REG/PARAM/FRAMESIZE

Merge the defines of STACKFRAMESIZE, STK_REG, STK_PARAM from different
places.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/pasemi: Move lbz/stbciz to ppc-opcode.h
Michael Neuling [Mon, 25 Jun 2012 13:33:13 +0000 (13:33 +0000)]
powerpc/pasemi: Move lbz/stbciz to ppc-opcode.h

move lbz/stbciz to ppc-opcode.h.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Convert to %r for all GPR usage
Michael Neuling [Mon, 25 Jun 2012 13:33:12 +0000 (13:33 +0000)]
powerpc: Convert to %r for all GPR usage

Now all the fixes are in place, let's rock-n-roll!

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Fix usage of register macros getting ready for %r0 change
Michael Neuling [Mon, 25 Jun 2012 13:33:10 +0000 (13:33 +0000)]
powerpc: Fix usage of register macros getting ready for %r0 change

Anything that uses a constructed instruction (ie. from ppc-opcode.h),
need to use the new R0 macro, as %r0 is not going to work.

Also convert usages of macros where we are just determining an offset
(usually for a load/store), like:
std r14,STK_REG(r14)(r1)
Can't use STK_REG(r14) as %r14 doesn't work in the STK_REG macro since
it's just calculating an offset.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Modify macro ready for %r0 register change
Michael Neuling [Mon, 25 Jun 2012 13:33:09 +0000 (13:33 +0000)]
powerpc: Modify macro ready for %r0 register change

The assembler doesn't take %r0 register arguments in braces, so remove them.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Add defines for R0-R31
Michael Neuling [Mon, 25 Jun 2012 13:33:08 +0000 (13:33 +0000)]
powerpc: Add defines for R0-R31

We are going to use these later and convert r0 to %r0 etc.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agoMerge branch 'merge' into next
Benjamin Herrenschmidt [Tue, 10 Jul 2012 09:16:43 +0000 (19:16 +1000)]
Merge branch 'merge' into next

We want to bring in the latest IRQ fixes

12 years agotty/hvc_opal: Fix debug function name
Benjamin Herrenschmidt [Wed, 4 Jul 2012 05:51:10 +0000 (15:51 +1000)]
tty/hvc_opal: Fix debug function name

udbg_init_debug_opal() should be udbg_init_debug_opal_raw() as
the caller in arch/powerpc/kernel/udbg.c expects

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/numa: Avoid stupid uninitialized warning from gcc
Benjamin Herrenschmidt [Thu, 5 Jul 2012 16:30:33 +0000 (16:30 +0000)]
powerpc/numa: Avoid stupid uninitialized warning from gcc

Newer gcc are being a bit blind here (it's pretty obvious we don't
reach the code path using the array if we haven't initialized the
pointer) but none of that is performance critical so let's just
silence it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Fix build of some debug irq code
Benjamin Herrenschmidt [Tue, 10 Jul 2012 08:37:56 +0000 (18:37 +1000)]
powerpc: Fix build of some debug irq code

There was a typo, checking for CONFIG_TRACE_IRQFLAG instead of
CONFIG_TRACE_IRQFLAGS causing some useful debug code to not be
built

This in turns causes a build error on BookE 64-bit due to incorrect
semicolons at the end of a couple of macros, so let's fix that too

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: stable@vger.kernel.org [v3.4]
12 years agopowerpc: More fixes for lazy IRQ vs. idle
Benjamin Herrenschmidt [Tue, 10 Jul 2012 08:36:40 +0000 (18:36 +1000)]
powerpc: More fixes for lazy IRQ vs. idle

Looks like we still have issues with pSeries and Cell idle code
vs. the lazy irq state. In fact, the reset fixes that went upstream
are exposing the problem more by causing BUG_ON() to trigger (which
this patch turns into a WARN_ON instead).

We need to be careful when using a variant of low power state that
has the side effect of turning interrupts back on, to properly set
all the SW & lazy state to look as if everything is enabled before
we enter the low power state with MSR:EE off as we will return with
MSR:EE on. If not, we have a discrepancy of state which can cause
things to go very wrong later on.

This patch moves the logic into a helper and uses it from the
pseries and cell idle code. The power4/970 idle code already got
things right (in assembly even !) so I'm not touching it. The power7
"bare metal" idle code is subtly different and correct. Remains PA6T
and some hypervisor based Cell platforms which have questionable
code in there, but they are mostly dead platforms so I'll fix them
when I manage to get final answers from the respective maintainers
about how the low power state actually works on them.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: stable@vger.kernel.org [v3.4]
12 years agoMerge tag 'regulator-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Linus Torvalds [Mon, 9 Jul 2012 20:43:02 +0000 (13:43 -0700)]
Merge tag 'regulator-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator fix from Mark Brown:
 "A smallish fix for a lock dependency issue which affects a bunch of
  Qualcomm boards that do unusually complicated things with their
  regulators, the API is unlikely to be called by any other system."

* tag 'regulator-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: Fix recursive mutex lockdep warning

12 years agogspca_sn9c20x: Fix NULL pointer dereference
Hans de Goede [Sun, 8 Jul 2012 17:41:14 +0000 (19:41 +0200)]
gspca_sn9c20x: Fix NULL pointer dereference

Don't call v4l2_ctrl_g_ctrl on ctrls which the model cam in question
does not have.

Reported-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
[ Taken directly, since Mauro is on vacation ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge tag 'virtio-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty...
Linus Torvalds [Mon, 9 Jul 2012 20:39:56 +0000 (13:39 -0700)]
Merge tag 'virtio-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus

Pull minor virtio-balloon fix from Rusty Russell:
 "Theoretical fix, which greatly simplifies upcoming balloon patches
  which will go in via some vm tree."

* tag 'virtio-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  virtio-balloon: fix add/get API use

12 years agoMerge tag 'rpmsg-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad...
Linus Torvalds [Mon, 9 Jul 2012 20:24:00 +0000 (13:24 -0700)]
Merge tag 'rpmsg-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/rpmsg

Pull rpmsg fixes from Ohad Ben-Cohen:
 "Fixing two (somewhat rare) endpoint-related race issues, both of which
  were reported by Fernando Guzman Lugo."

* tag 'rpmsg-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/rpmsg:
  rpmsg: make sure inflight messages don't invoke just-removed callbacks
  rpmsg: avoid premature deallocation of endpoints

12 years agoMerge tag 'remoteproc-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 9 Jul 2012 20:23:21 +0000 (13:23 -0700)]
Merge tag 'remoteproc-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc

Pull remoteproc fixes from Ohad Ben-Cohen:
 "Two build-related remoteproc fixes for 3.5."

* tag 'remoteproc-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc:
  remoteproc: fix missing CONFIG_FW_LOADER configurations
  remoteproc/omap: fix randconfig unmet direct dependencies

12 years agoMerge tag 'hwspinlock-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 9 Jul 2012 20:22:40 +0000 (13:22 -0700)]
Merge tag 'hwspinlock-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/hwspinlock

Pull hwspinlock fix from Ohad Ben-Cohen:
 "A single hwspinlock core fix for multiple hwspinlock devices
  scenarios, from Shinya Kuribayashi."

* tag 'hwspinlock-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/hwspinlock:
  hwspinlock/core: use global ID to register hwspinlocks on multiple devices

12 years agoMerge tag 'iommu-fixes-v3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 9 Jul 2012 17:57:21 +0000 (10:57 -0700)]
Merge tag 'iommu-fixes-v3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU fixes from Joerg Roedel:
 "The patches fix several issues in the AMD IOMMU driver, the NVidia
  SMMU driver, and the DMA debug code.

  The most important fix for the AMD IOMMU solves a problem with SR-IOV
  devices where virtual functions did not work with IOMMU enabled.  The
  NVidia SMMU patch fixes a possible sleep while spin-lock situation
  (queued the small fix for v3.5, a better but more intrusive fix is
  coming for v3.6).  The DMA debug patches fix a possible data
  corruption issue due to bool vs u32 usage."

* tag 'iommu-fixes-v3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/amd: fix type bug in flush code
  dma-debug: debugfs_create_bool() takes a u32 pointer
  iommu/tegra: smmu: Fix unsleepable memory allocation
  iommu/amd: Initialize dma_ops for hotplug and sriov devices
  iommu/amd: Fix missing iommu_shutdown initialization in passthrough mode

12 years agovirtio-balloon: fix add/get API use
Michael S. Tsirkin [Mon, 2 Jul 2012 07:33:08 +0000 (10:33 +0300)]
virtio-balloon: fix add/get API use

Since ee7cd8981e15bcb365fc762afe3fc47b8242f630 'virtio: expose added
descriptors immediately.', in virtio balloon virtqueue_get_buf might
now run concurrently with virtqueue_kick.  I audited both and this
seems safe in practice but this is not guaranteed by the API.
Additionally, a spurious interrupt might in theory make
virtqueue_get_buf run in parallel with virtqueue_add_buf, which is
racy.

While we might try to protect against spurious callbacks it's
easier to fix the driver: balloon seems to be the only one
(mis)using the API like this, so let's just fix balloon.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (removed unused var)
12 years agoMerge branch 'for-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Sun, 8 Jul 2012 16:09:27 +0000 (09:09 -0700)]
Merge branch 'for-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup fixes from Tejun Heo:
 "The previous cgroup pull request contained a patch to fix a race
  condition during cgroup hierarchy umount.  Unfortunately, while the
  patch reduced the race window such that the test case I and Sasha were
  using didn't trigger it anymore, it wasn't complete - Shyju and Li
  could reliably trigger the race condition using a different test case.

  The problem wasn't the gap between dentry deletion and release which
  the previous patch tried to fix.  The window was between the last
  dput() of a root's child and the resulting dput() of the root.  For
  cgroup dentries, the deletion and release always happen synchronously.
  As this releases the s_active ref, the refcnt of the root dentry,
  which doesn't hold s_active, stays above zero without the
  corresponding s_active.  If umount was in progress, the last
  deactivate_super() proceeds to destory the superblock and triggers
  BUG() on the non-zero root dentry refcnt after shrinking.

  This issue surfaced because cgroup dentries are now allowed to linger
  after rmdir(2) since 3.5-rc1.  Before, rmdir synchronously drained the
  dentry refcnt and the s_active acquired by rmdir from vfs layer
  protected the whole thing.  After 3.5-rc1, cgroup may internally hold
  and put dentry refs after rmdir finishes and the delayed dput()
  doesn't have surrounding s_active ref exposing this issue.

  This pull request contains two patches - one reverting the previous
  incorrect fix and the other adding the surrounding s_active ref around
  the delayed dput().

  This is quite late in the release cycle but the change is on the safer
  side and fixes the test cases reliably, so I don't think it's too
  crazy."

* 'for-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: fix cgroup hierarchy umount race
  Revert "cgroup: superblock can't be released with active dentries"

12 years agoLinux 3.5-rc6
Linus Torvalds [Sun, 8 Jul 2012 00:23:56 +0000 (17:23 -0700)]
Linux 3.5-rc6

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Sun, 8 Jul 2012 00:21:59 +0000 (17:21 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

Pull security docs update from James Morris.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  security: Minor improvements to no_new_privs documentation

12 years agovfs: make O_PATH file descriptors usable for 'fchdir()'
Linus Torvalds [Sat, 7 Jul 2012 17:17:00 +0000 (10:17 -0700)]
vfs: make O_PATH file descriptors usable for 'fchdir()'

We already use them for openat() and friends, but fchdir() also wants to
be able to use O_PATH file descriptors.  This should make it comparable
to the O_SEARCH of Solaris.  In particular, O_PATH allows you to access
(not-quite-open) a directory you don't have read persmission to, only
execute permission.

Noticed during development of multithread support for ksh93.

Reported-by: ольга крыжановская <olga.kryzhanovska@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@kernel.org # O_PATH introduced in 3.0+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agocgroup: fix cgroup hierarchy umount race
Tejun Heo [Sat, 7 Jul 2012 23:08:18 +0000 (16:08 -0700)]
cgroup: fix cgroup hierarchy umount race

48ddbe1946 "cgroup: make css->refcnt clearing on cgroup removal
optional" allowed a css to linger after the associated cgroup is
removed.  As a css holds a reference on the cgroup's dentry, it means
that cgroup dentries may linger for a while.

Destroying a superblock which has dentries with positive refcnts is a
critical bug and triggers BUG() in vfs code.  As each cgroup dentry
holds an s_active reference, any lingering cgroup has both its dentry
and the superblock pinned and thus preventing premature release of
superblock.

Unfortunately, after 48ddbe1946, there's a small window while
releasing a cgroup which is directly under the root of the hierarchy.
When a cgroup directory is released, vfs layer first deletes the
corresponding dentry and then invokes dput() on the parent, which may
recurse further, so when a cgroup directly below root cgroup is
released, the cgroup is first destroyed - which releases the s_active
it was holding - and then the dentry for the root cgroup is dput().

This creates a window where the root dentry's refcnt isn't zero but
superblock's s_active is.  If umount happens before or during this
window, vfs will see the root dentry with non-zero refcnt and trigger
BUG().

Before 48ddbe1946, this problem didn't exist because the last dentry
reference was guaranteed to be put synchronously from rmdir(2)
invocation which holds s_active around the whole process.

Fix it by holding an extra superblock->s_active reference across
dput() from css release, which is the dput() path added by 48ddbe1946
and the only one which doesn't hold an extra s_active ref across the
final cgroup dput().

Signed-off-by: Tejun Heo <tj@kernel.org>
LKML-Reference: <4FEEA5CB.8070809@huawei.com>
Reported-by: shyju pv <shyju.pv@huawei.com>
Tested-by: shyju pv <shyju.pv@huawei.com>
Cc: Sasha Levin <levinsasha928@gmail.com>
Acked-by: Li Zefan <lizefan@huawei.com>
12 years agoRevert "cgroup: superblock can't be released with active dentries"
Tejun Heo [Sat, 7 Jul 2012 22:55:47 +0000 (15:55 -0700)]
Revert "cgroup: superblock can't be released with active dentries"

This reverts commit fa980ca87d15bb8a1317853f257a505990f3ffde.  The
commit was an attempt to fix a race condition where a cgroup hierarchy
may be unmounted with positive dentry reference on root cgroup.  While
the commit made the race condition slightly more difficult to trigger,
the race was still there and could be reliably triggered using a
different test case.

Revert the incorrect fix.  The next commit will describe the race and
fix it correctly.

Signed-off-by: Tejun Heo <tj@kernel.org>
LKML-Reference: <4FEEA5CB.8070809@huawei.com>
Reported-by: shyju pv <shyju.pv@huawei.com>
Cc: Sasha Levin <levinsasha928@gmail.com>
Acked-by: Li Zefan <lizefan@huawei.com>
12 years agohwspinlock/core: use global ID to register hwspinlocks on multiple devices
Shinya Kuribayashi [Sat, 7 Jul 2012 10:37:42 +0000 (13:37 +0300)]
hwspinlock/core: use global ID to register hwspinlocks on multiple devices

Commit 300bab9770 (hwspinlock/core: register a bank of hwspinlocks in a
single API call, 2011-09-06) introduced 'hwspin_lock_register_single()'
to register numerous (a bank of) hwspinlock instances in a single API,
'hwspin_lock_register()'.

At which time, 'hwspin_lock_register()' accidentally passes 'local IDs'
to 'hwspin_lock_register_single()', despite that ..._single() requires
'global IDs' to register hwspinlocks.

We have to convert into global IDs by supplying the missing 'base_id'.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
[ohad: fix error path of hwspin_lock_register, too]
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
12 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Sat, 7 Jul 2012 18:20:59 +0000 (11:20 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fixes from Russell King:
 "Last merge window, we had some updates from Al cleaning up the signal
  restart handling.  These have caused some problems on ARM, and while
  Al has some fixes, we have some concerns with Al's patches but we've
  been unsuccesful with discussing this.

  We have got to the point where we need to do something, and we've
  decided that the best solution is to revert the appropriate commits
  until Al is able to reply to us.

  Also included here are four patches to fix warnings that I've noticed
  in my build system, and one fix for kprobes test code."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: fix warning caused by wrongly typed arm_dma_limit
  ARM: fix warnings about atomic64_read
  ARM: 7440/1: kprobes: only test 'sub pc, pc, #1b-2b+8-2' on ARMv6
  ARM: 7441/1: perf: return -EOPNOTSUPP if requested mode exclusion is unavailable
  ARM: 7443/1: Revert "new way of handling ERESTART_RESTARTBLOCK"
  ARM: 7442/1: Revert "remove unused restart trampoline"
  ARM: fix set_domain() macro
  ARM: fix mach-versatile/pci.c warning

12 years agosecurity: Minor improvements to no_new_privs documentation
Andy Lutomirski [Thu, 5 Jul 2012 18:23:24 +0000 (11:23 -0700)]
security: Minor improvements to no_new_privs documentation

The documentation didn't actually mention how to enable no_new_privs.
This also adds a note about possible interactions between
no_new_privs and LSMs (i.e. why teaching systemd to set no_new_privs
is not necessarily a good idea), and it references the new docs
from include/linux/prctl.h.

Suggested-by: Rob Landley <rob@landley.net>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: James Morris <james.l.morris@oracle.com>
12 years agoMerge tag 'ecryptfs-3.5-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 6 Jul 2012 22:32:18 +0000 (15:32 -0700)]
Merge tag 'ecryptfs-3.5-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs

Pull eCryptfs fixes from Tyler Hicks:
 "Fixes an incorrect access mode check when preparing to open a file in
  the lower filesystem.  This isn't an urgent fix, but it is simple and
  the check was obviously incorrect.

  Also fixes a couple important bugs in the eCryptfs miscdev interface.
  These changes are low risk due to the small number of users that use
  the miscdev interface.  I was able to keep the changes minimal and I
  have some cleaner, more complete changes queued up for the next merge
  window that will build on these patches."

* tag 'ecryptfs-3.5-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
  eCryptfs: Gracefully refuse miscdev file ops on inherited/passed files
  eCryptfs: Fix lockdep warning in miscdev operations
  eCryptfs: Properly check for O_RDONLY flag before doing privileged open

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Linus Torvalds [Fri, 6 Jul 2012 20:59:50 +0000 (13:59 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

Pull target fixes from Nicholas Bellinger:
 "Two minor target fixes.  There is really nothing exciting and/or
  controversial this time around.

  There's one fix from MDR for a RCU debug warning message within tcm_fc
  code (CC'ed to stable), and a small AC fix for qla_target.c based upon
  a recent Coverity static report.

  Also, there is one other outstanding virtio-scsi LUN scanning bugfix
  that has been uncovered with the in-flight tcm_vhost driver over the
  last days, and that needs to make it into 3.5 final too.  This patch
  has been posted to linux-scsi again here:

    http://marc.info/?l=linux-scsi&m=134160609212542&w=2

  and I've asked James to include it in his next PULL request."

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  qla2xxx: print the right array elements in qlt_async_event
  tcm_fc: Resolve suspicious RCU usage warnings

12 years agoeCryptfs: Gracefully refuse miscdev file ops on inherited/passed files
Tyler Hicks [Mon, 11 Jun 2012 16:24:11 +0000 (09:24 -0700)]
eCryptfs: Gracefully refuse miscdev file ops on inherited/passed files

File operations on /dev/ecryptfs would BUG() when the operations were
performed by processes other than the process that originally opened the
file. This could happen with open files inherited after fork() or file
descriptors passed through IPC mechanisms. Rather than calling BUG(), an
error code can be safely returned in most situations.

In ecryptfs_miscdev_release(), eCryptfs still needs to handle the
release even if the last file reference is being held by a process that
didn't originally open the file. ecryptfs_find_daemon_by_euid() will not
be successful, so a pointer to the daemon is stored in the file's
private_data. The private_data pointer is initialized when the miscdev
file is opened and only used when the file is released.

https://launchpad.net/bugs/994247

Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Tested-by: Sasha Levin <levinsasha928@gmail.com>
12 years agoqla2xxx: print the right array elements in qlt_async_event
Alan Cox [Wed, 4 Jul 2012 15:35:35 +0000 (16:35 +0100)]
qla2xxx: print the right array elements in qlt_async_event

Based upon Alan's patch from Coverity scan id 793583, these debug
messages in qlt_async_event() should be starting from byte 0, which is
always the Asynchronous Event Status Code from the parent switch statement.

Also, rename reason_code -> login_code following the language used in
2500 FW spec for Port Database Changed (0x8014) -> Port Database Changed
Event Mailbox Register for mailbox[2].

Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: Chad Dupuis <chad.dupuis@qlogic.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agotcm_fc: Resolve suspicious RCU usage warnings
Mark Rustad [Tue, 26 Jun 2012 22:57:30 +0000 (15:57 -0700)]
tcm_fc: Resolve suspicious RCU usage warnings

Use rcu_dereference_protected to tell rcu that the ft_lport_lock
is held during ft_lport_create. This resolved "suspicious RCU usage"
warnings when debugging options are turned on.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agoMerge tag 'for-linus-20120706' of git://git.infradead.org/linux-mtd
Linus Torvalds [Fri, 6 Jul 2012 17:34:48 +0000 (10:34 -0700)]
Merge tag 'for-linus-20120706' of git://git.infradead.org/linux-mtd

Pull two MTD fixes from David Woodhouse:
 - Fix a logic error in OLPC CAFÉ NAND ready() function.
 - Fix regression due to bitflip handling changes.

* tag 'for-linus-20120706' of git://git.infradead.org/linux-mtd:
  mtd: cafe_nand: fix an & vs | mistake
  mtd: nand: initialize bitflip_threshold prior to BBT scanning

12 years agomm: Hold a file reference in madvise_remove
Andy Lutomirski [Thu, 5 Jul 2012 23:00:11 +0000 (16:00 -0700)]
mm: Hold a file reference in madvise_remove

Otherwise the code races with munmap (causing a use-after-free
of the vma) or with close (causing a use-after-free of the struct
file).

The bug was introduced by commit 90ed52ebe481 ("[PATCH] holepunch: fix
mmap_sem i_mutex deadlock")

Cc: Hugh Dickins <hugh@veritas.com>
Cc: Miklos Szeredi <mszeredi@suse.cz>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: stable@vger.kernel.org
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2
Linus Torvalds [Fri, 6 Jul 2012 17:04:39 +0000 (10:04 -0700)]
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2

Pull ocfs2 fixes from Joel Becker.

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
  aio: make kiocb->private NUll in init_sync_kiocb()
  ocfs2: Fix bogus error message from ocfs2_global_read_info
  ocfs2: for SEEK_DATA/SEEK_HOLE, return internal error unchanged if ocfs2_get_clusters_nocache() or ocfs2_inode_lock() call failed.
  ocfs2: use spinlock irqsave for downconvert lock.patch
  ocfs2: Misplaced parens in unlikley
  ocfs2: clear unaligned io flag when dio fails

12 years agoMerge git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Fri, 6 Jul 2012 17:02:12 +0000 (10:02 -0700)]
Merge git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French.

* git://git.samba.org/sfrench/cifs-2.6:
  cifs: when server doesn't set CAP_LARGE_READ_X, cap default rsize at MaxBufferSize
  cifs: fix parsing of password mount option

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Fri, 6 Jul 2012 16:50:39 +0000 (09:50 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input layer fixes from Dmitry Torokhov:
 "Two fixes for regressions in Wacom driver and fixes for drivers using
  threaded IRQ framework without specifying IRQF_ONESHOT."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: request threaded-only IRQs with IRQF_ONESHOT
  Input: wacom - don't retrieve touch_max when it is predefined
  Input: wacom - fix retrieving touch_max bug
  Input: fix input.h kernel-doc warning

12 years agomtd: cafe_nand: fix an & vs | mistake
Dan Carpenter [Sat, 9 Jun 2012 16:08:25 +0000 (19:08 +0300)]
mtd: cafe_nand: fix an & vs | mistake

The intent here was clearly to set result to true if the 0x40000000 flag
was set.  But instead there was a | vs & typo and we always set result
to true.

Artem: check the spec at
wiki.laptop.org/images/5/5c/88ALP01_Datasheet_July_2007.pdf
and this fix looks correct.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Thu, 5 Jul 2012 20:20:02 +0000 (13:20 -0700)]
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Small fixes on multiple ARM platforms
   - A build regression from a previous fix on dove and mv78xx0
   - Two fixes for recently (3.5-rc1) changed mmp/pxa code
   - multiple omap2+ bug fixes
   - two trivial fixes for i.MX
   - one v3.5 regression for mxs"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: apx4devkit: fix FEC enabling PHY clock
  ARM: OMAP2+: hwmod data: Fix wrong McBSP clock alias on OMAP4
  ARM: OMAP4: hwmod data: temporarily comment out data for the usb_host_fs and aess IP blocks
  ARM: Orion: Fix WDT compile for Dove and MV78xx0
  ARM: mmp: remove mach/gpio-pxa.h
  ARM: imx: assert SCC gate stays enabled
  ARM: OMAP4: TWL6030: ensure sys_nirq1 is mux'd and wakeup enabled
  ARM: OMAP2: Overo: init I2C before MMC to fix MMC suspend/resume failure
  ARM: imx27_visstrim_m10: Do not include <asm/system.h>
  ARM: pxa: hx4700: Fix basic suspend/resume

12 years agoMerge git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Thu, 5 Jul 2012 20:16:21 +0000 (13:16 -0700)]
Merge git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fix from Marcelo Tosatti:
 "Memory leak and oops on the x86 mmu code, and sanitization of the
  KVM_IRQFD ioctl."

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: MMU: fix shrinking page from the empty mmu
  KVM: fix fault page leak
  KVM: Sanitize KVM_IRQFD flags
  KVM: Add missing KVM_IRQFD API documentation
  KVM: Pass kvm_irqfd to functions

12 years agoMerge branch 'fixes-for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/coolone...
Linus Torvalds [Thu, 5 Jul 2012 20:09:37 +0000 (13:09 -0700)]
Merge branch 'fixes-for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds

Pull leds fix from Bryan Wu:
 "Fix for heartbeat led trigger driver"

* 'fixes-for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
  leds: heartbeat: fix bug on panic

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Thu, 5 Jul 2012 20:06:25 +0000 (13:06 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

Pull btrfs updates from Chris Mason:
 "I held off on my rc5 pull because I hit an oops during log recovery
  after a crash.  I wanted to make sure it wasn't a regression because
  we have some logging fixes in here.

  It turns out that a commit during the merge window just made it much
  more likely to trigger directory logging instead of full commits,
  which exposed an old bug.

  The new backref walking code got some additional fixes.  This should
  be the final set of them.

  Josef fixed up a corner where our O_DIRECT writes and buffered reads
  could expose old file contents (not stale, just not the most recent).
  He and Liu Bo fixed crashes during tree log recover as well.

  Ilya fixed errors while we resume disk balancing operations on
  readonly mounts."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: run delayed directory updates during log replay
  Btrfs: hold a ref on the inode during writepages
  Btrfs: fix tree log remove space corner case
  Btrfs: fix wrong check during log recovery
  Btrfs: use _IOR for BTRFS_IOC_SUBVOL_GETFLAGS
  Btrfs: resume balance on rw (re)mounts properly
  Btrfs: restore restriper state on all mounts
  Btrfs: fix dio write vs buffered read race
  Btrfs: don't count I/O statistic read errors for missing devices
  Btrfs: resolve tree mod log locking issue in btrfs_next_leaf
  Btrfs: fix tree mod log rewind of ADD operations
  Btrfs: leave critical region in btrfs_find_all_roots as soon as possible
  Btrfs: always put insert_ptr modifications into the tree mod log
  Btrfs: fix tree mod log for root replacements at leaf level
  Btrfs: support root level changes in __resolve_indirect_ref
  Btrfs: avoid waiting for delayed refs when we must not

12 years agoMerge branch 'fixes-for-grant' of git://sources.calxeda.com/kernel/linux
Linus Torvalds [Thu, 5 Jul 2012 18:53:47 +0000 (11:53 -0700)]
Merge branch 'fixes-for-grant' of git://sources.calxeda.com/kernel/linux

Pull DT fixes from Rob Herring:
 "Mainly some documentation updates and 2 fixes:

   - An export symbol fix for of_platform_populate from Stephen W.
   - A fix for the order compatible entries are matched to ensure the
     first compatible string is matched when there are multiple matches."

Normally these would go through Grant Likely (thus the "fixes-for-grant"
branch name), but Grant is in the middle of moving to Scotland, and is
practically offline until sometime in August. So pull directly from Rob.

* 'fixes-for-grant' of git://sources.calxeda.com/kernel/linux:
  of: match by compatible property first
  dt: mc13xxx.txt: Fix gpio number assignment
  dt: fsl-fec.txt: Fix gpio number assignment
  dt: fsl-mma8450.txt: Add missing 'reg' description
  dt: fsl-imx-esdhc.txt: Fix gpio number assignment
  dt: fsl-imx-cspi.txt: Fix comment about GPIOs used for chip selects
  of: Add Avionic Design vendor prefix
  of: export of_platform_populate()

12 years agoARM: fix warning caused by wrongly typed arm_dma_limit
Russell King [Thu, 5 Jul 2012 12:11:31 +0000 (13:11 +0100)]
ARM: fix warning caused by wrongly typed arm_dma_limit

arch/arm/mm/init.c: In function 'arm_memblock_init':
arch/arm/mm/init.c:380: warning: comparison of distinct pointer types lacks a cast

by fixing the typecast in its definition when DMA_ZONE is disabled.
This was missed in 4986e5c7c (ARM: mm: fix type of the arm_dma_limit
global variable).

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: fix warnings about atomic64_read
Russell King [Thu, 5 Jul 2012 12:06:32 +0000 (13:06 +0100)]
ARM: fix warnings about atomic64_read

Fix:
net/netfilter/xt_connbytes.c: In function 'connbytes_mt':
net/netfilter/xt_connbytes.c:43: warning: passing argument 1 of 'atomic64_read' discards qualifiers from pointer target type
...

by adding the missing const.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7440/1: kprobes: only test 'sub pc, pc, #1b-2b+8-2' on ARMv6
Rabin Vincent [Wed, 4 Jul 2012 06:37:37 +0000 (07:37 +0100)]
ARM: 7440/1: kprobes: only test 'sub pc, pc, #1b-2b+8-2' on ARMv6

'sub pc, pc, #1b-2b+8-2' results in address<1:0> == '10'.

sub pc, pc, #const (== ADR pc, #const) performs an interworking branch
(BXWritePC()) on ARMv7+ and a simple branch (BranchWritePC()) on earlier
versions.

In ARM state, BXWritePC() is UNPREDICTABLE when address<1:0> == '10'.

In ARM state on ARMv6+, BranchWritePC() ignores address<1:0>.  Before
ARMv6, BranchWritePC() is UNPREDICTABLE if address<1:0> != '00'

So the instruction is UNPREDICTABLE both before and after v6.

Acked-by: Jon Medhurst <tixy@yxit.co.uk>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoMerge tag 'omap-fixes-for-v3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel...
Arnd Bergmann [Thu, 5 Jul 2012 10:16:13 +0000 (12:16 +0200)]
Merge tag 'omap-fixes-for-v3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

PM related fixes for omaps mostly to get suspend/resume
working again.

* tag 'omap-fixes-for-v3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: hwmod data: Fix wrong McBSP clock alias on OMAP4
  ARM: OMAP4: hwmod data: temporarily comment out data for the usb_host_fs and aess IP blocks
  ARM: OMAP4: TWL6030: ensure sys_nirq1 is mux'd and wakeup enabled
  ARM: OMAP2: Overo: init I2C before MMC to fix MMC suspend/resume failure

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoMerge branch 'mxs/fixes-for-3.5' of git://git.linaro.org/people/shawnguo/linux-2...
Arnd Bergmann [Thu, 5 Jul 2012 09:06:36 +0000 (11:06 +0200)]
Merge branch 'mxs/fixes-for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes

* 'mxs/fixes-for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: apx4devkit: fix FEC enabling PHY clock

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoARM: 7441/1: perf: return -EOPNOTSUPP if requested mode exclusion is unavailable
Will Deacon [Wed, 4 Jul 2012 17:15:42 +0000 (18:15 +0100)]
ARM: 7441/1: perf: return -EOPNOTSUPP if requested mode exclusion is unavailable

We currently return -EPERM if the user requests mode exclusion that is
not supported by the CPU. This looks pretty confusing from userspace
and is inconsistent with other architectures (ppc, x86).

This patch returns -EOPNOTSUPP instead.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7443/1: Revert "new way of handling ERESTART_RESTARTBLOCK"
Will Deacon [Wed, 4 Jul 2012 17:17:16 +0000 (18:17 +0100)]
ARM: 7443/1: Revert "new way of handling ERESTART_RESTARTBLOCK"

This reverts commit 6b5c8045ecc7e726cdaa2a9d9c8e5008050e1252.

Conflicts:

arch/arm/kernel/ptrace.c

The new syscall restarting code can lead to problems if we take an
interrupt in userspace just before restarting the svc instruction. If
a signal is delivered when returning from the interrupt, the
TIF_SYSCALL_RESTARTSYS will remain set and cause any syscalls executed
from the signal handler to be treated as a restart of the previously
interrupted system call. This includes the final sigreturn call, meaning
that we may fail to exit from the signal context. Furthermore, if a
system call made from the signal handler requires a restart via the
restart_block, it is possible to clear the thread flag and fail to
restart the originally interrupted system call.

The right solution to this problem is to perform the restarting in the
kernel, avoiding the possibility of handling a further signal before the
restart is complete. Since we're almost at -rc6, let's revert the new
method for now and aim for in-kernel restarting at a later date.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7442/1: Revert "remove unused restart trampoline"
Will Deacon [Wed, 4 Jul 2012 17:16:30 +0000 (18:16 +0100)]
ARM: 7442/1: Revert "remove unused restart trampoline"

This reverts commit fa18484d0947b976a769d15c83c50617493c81c1.

We need the restart trampoline back so that we can revert a related
problematic patch 6b5c8045ecc7e726cdaa2a9d9c8e5008050e1252 ("arm: new
way of handling ERESTART_RESTARTBLOCK").

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: fix set_domain() macro
Russell King [Wed, 4 Jul 2012 16:05:28 +0000 (17:05 +0100)]
ARM: fix set_domain() macro

Avoid polluting drivers with a set_domain() macro, which interferes with
structure member names:

drivers/net/wireless/ath/ath9k/dfs_pattern_detector.c:294:33: error: macro "set_domain" passed 2 arguments, but takes just 1

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoaio: make kiocb->private NUll in init_sync_kiocb()
Junxiao Bi [Wed, 27 Jun 2012 09:09:54 +0000 (17:09 +0800)]
aio: make kiocb->private NUll in init_sync_kiocb()

Ocfs2 uses kiocb.*private as a flag of unsigned long size. In
commit a11f7e6 ocfs2: serialize unaligned aio, the unaligned
io flag is involved in it to serialize the unaligned aio. As
*private is not initialized in init_sync_kiocb() of do_sync_write(),
this unaligned io flag may be unexpectly set in an aligned dio.
And this will cause OCFS2_I(inode)->ip_unaligned_aio decreased
to -1 in ocfs2_dio_end_io(), thus the following unaligned dio
will hang forever at ocfs2_aiodio_wait() in ocfs2_file_aio_write().

Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Cc: stable@vger.kernel.org
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
12 years agoMerge tag 'omap-fixes-b-for-3.5rc' of git://git.kernel.org/pub/scm/linux/kernel/git...
Tony Lindgren [Thu, 5 Jul 2012 08:12:08 +0000 (01:12 -0700)]
Merge tag 'omap-fixes-b-for-3.5rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into fixes

A few more OMAP fixes for 3.5-rc.  These fix some bugs with power
management and McBSP.

12 years agoARM: apx4devkit: fix FEC enabling PHY clock
Lauri Hintsala [Thu, 5 Jul 2012 07:31:36 +0000 (10:31 +0300)]
ARM: apx4devkit: fix FEC enabling PHY clock

Ethernet stopped to work after mxs clk framework change.

Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
12 years agoInput: request threaded-only IRQs with IRQF_ONESHOT
Lars-Peter Clausen [Wed, 4 Jul 2012 20:02:56 +0000 (13:02 -0700)]
Input: request threaded-only IRQs with IRQF_ONESHOT

Since commit 1c6c69525b ("genirq: Reject bogus threaded irq requests")
threaded IRQs without a primary handler need to be requested with
IRQF_ONESHOT, otherwise the request will fail. This patch adds the
IRQF_ONESHOT to input drivers where it is missing. Not modified by
this patch are those drivers where the requested IRQ will always be a
nested IRQ (e.g. because it's part of an MFD), since for this special
case IRQF_ONESHOT is not required to be specified when requesting the
IRQ.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
12 years agoARM: fix mach-versatile/pci.c warning
Russell King [Wed, 4 Jul 2012 16:04:57 +0000 (17:04 +0100)]
ARM: fix mach-versatile/pci.c warning

arch/arm/mach-versatile/pci.c: In function 'versatile_map_irq':
arch/arm/mach-versatile/pci.c:342: warning: unused variable 'devslot'

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: OMAP2+: hwmod data: Fix wrong McBSP clock alias on OMAP4
Benoit Cousson [Wed, 4 Jul 2012 12:55:29 +0000 (06:55 -0600)]
ARM: OMAP2+: hwmod data: Fix wrong McBSP clock alias on OMAP4

The commit 503d0ea24d1d3dd3db95e5e0edd693da7a2a23eb
  ARM: OMAP4: hwmod data: Add aliases for McBSP fclk clocks

added a wrong "prcm_clk" alias for PRCM clock whereas the McBSP
driver and previous OMAPs are using "prcm_fck".

It thus lead to the following warning.

[   47.409729] omap-mcbsp: clks: could not clk_get() prcm_fck

Fix that by changing the opt_clk role to prcm_fck.

Reported-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Sebastien Guiriec <s-guiriec@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
12 years agoARM: OMAP4: hwmod data: temporarily comment out data for the usb_host_fs and aess...
Paul Walmsley [Wed, 4 Jul 2012 12:55:29 +0000 (06:55 -0600)]
ARM: OMAP4: hwmod data: temporarily comment out data for the usb_host_fs and aess IP blocks

The OMAP4 usb_host_fs (OHCI) and AESS IP blocks require some special
programming for them to enter idle.  Without this programming, they
will prevent the rest of the chip from entering full chip idle.

To implement the idle programming cleanly, this will take some
coordination between maintainers.  This is likely to take some time,
so it is probably best to leave this for 3.6 or 3.7.  So, in the
meantime, prevent these IP blocks from being registered.

Later, once the appropriate support is available, this patch can be
reverted.

This second version comments out the IP block data since Benoît didn't
like removing it.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
12 years agoMerge branch 'fixes' of git://github.com/hzhuang1/linux into fixes
Arnd Bergmann [Wed, 4 Jul 2012 11:49:58 +0000 (13:49 +0200)]
Merge branch 'fixes' of git://github.com/hzhuang1/linux into fixes

From Haojian Zhuang <haojian.zhuang@gmail.com>:

* 'fixes' of git://github.com/hzhuang1/linux:
  ARM: mmp: remove mach/gpio-pxa.h

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoMerge tag 'v3.5-imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes
Arnd Bergmann [Wed, 4 Jul 2012 11:46:05 +0000 (13:46 +0200)]
Merge tag 'v3.5-imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes

From Sascha Hauer <s.hauer@pengutronix.de>:

ARM i.MX fixes for v3.5-rc5

* tag 'v3.5-imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6:
  ARM: imx: assert SCC gate stays enabled
  ARM: imx27_visstrim_m10: Do not include <asm/system.h>

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agorpmsg: make sure inflight messages don't invoke just-removed callbacks
Ohad Ben-Cohen [Thu, 7 Jun 2012 12:39:35 +0000 (15:39 +0300)]
rpmsg: make sure inflight messages don't invoke just-removed callbacks

When inbound messages arrive, rpmsg core looks up their associated
endpoint (by destination address) and then invokes their callback.

We've made sure that endpoints will never be de-allocated after they
were found by rpmsg core, but we also need to protect against the
(rare) scenario where the rpmsg driver was just removed, and its
callback function isn't available anymore.

This is achieved by introducing a callback mutex, which must be taken
before the callback is invoked, and, obviously, before it is removed.

Cc: stable <stable@vger.kernel.org>
Reported-by: Fernando Guzman Lugo <fernando.lugo@ti.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
12 years agorpmsg: avoid premature deallocation of endpoints
Ohad Ben-Cohen [Wed, 6 Jun 2012 07:09:25 +0000 (10:09 +0300)]
rpmsg: avoid premature deallocation of endpoints

When an inbound message arrives, the rpmsg core looks up its
associated endpoint and invokes the registered callback.

If a message arrives while its endpoint is being removed (because
the rpmsg driver was removed, or a recovery of a remote processor
has kicked in) we must ensure atomicity, i.e.:

- Either the ept is removed before it is found

or

- The ept is found but will not be freed until the callback returns

This is achieved by maintaining a per-ept reference count, which,
when drops to zero, will trigger deallocation of the ept.

With this in hand, it is now forbidden to directly deallocate
epts once they have been added to the endpoints idr.

Cc: stable <stable@vger.kernel.org>
Reported-by: Fernando Guzman Lugo <fernando.lugo@ti.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
12 years agoARM: Orion: Fix WDT compile for Dove and MV78xx0
Andrew Lunn [Fri, 29 Jun 2012 07:25:58 +0000 (09:25 +0200)]
ARM: Orion: Fix WDT compile for Dove and MV78xx0

Commit 0fa1f0609a0c1fe8b2be3c0089a2cb48f7fda521 (ARM: Orion: Fix
Virtual/Physical mixup with watchdog) broke the Dove & MV78xx0
build. Although these two SoC don't use the watchdog, the shared
platform code still needs to build. Add the necessary defines.

Cc: stable@vger.kernel.org
Reported-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoremoteproc: fix missing CONFIG_FW_LOADER configurations
Ohad Ben-Cohen [Sun, 1 Jul 2012 08:53:36 +0000 (11:53 +0300)]
remoteproc: fix missing CONFIG_FW_LOADER configurations

Remoteproc requires user space firmware loading support, so
let's select FW_LOADER explicitly to avoid painful misconfigurations
(which only show up in runtime).

Cc: stable <stable@vger.kernel.org>
Reported-by: Mark Grosen <mgrosen@ti.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>