Chaithrika U S [Fri, 5 Jun 2009 10:28:40 +0000 (06:28 -0400)]
ASoC: Add mcasp support for DM646x
Adds driver support for the two instances of McASP on TI's DM646x.
The multichannel audio serial port (McASP) functions as a general-purpose audio
serial port optimized for the needs of multichannel audio application.
(http://www.ti.com/litv/pdf/spruer1b).
There are two instances of McASP on DM646x. The McASP0 module includes up to 4
serializers that can be individually enabled to either transmit or receive
in different modes. The McASP1 module is limited with only 1 pinned-out
serializer that can be enabled to only transmit in DIT mode (neither receiving
in any mode nor transmitting in either Burst or TDM mode is supported).
McASP0 consists of transmit and receive sections that may operate
synchronized, or completely independently with separate master clocks, bit
clocks, and frame syncs, and using different transmit modes with different
bit-stream formats.
Signed-off-by: Steve Chen <schen@mvista.com> Signed-off-by: Pavel Kiryukhin <pkiryukhin@ru.mvista.com> Signed-off-by: Naresh Medisetty <naresh@ti.com> Signed-off-by: Chaithrika U S <chaithrika@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Chaithrika U S [Fri, 5 Jun 2009 10:28:23 +0000 (06:28 -0400)]
ASoC: Introduce platform driver model for dm644x, dm355
Introduce the platform driver model to get platform data for dm355 and dm644x.
Register platform driver and acquire the resources in the probe function Since
the platform specific code had been moved from machine driver to dm<soc>.c
Signed-off-by: Naresh Medisetty <naresh@ti.com> Signed-off-by: Chaithrika U S <chaithrika@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Daniel Mack [Wed, 3 Jun 2009 15:44:49 +0000 (17:44 +0200)]
ASoC: fix NULL pointer dereference in soc_suspend()
In case the initalization of an soc_device failed, there is no codec
associated with it. soc_suspend() will still dereference the pointer
and cause an Ooops when entering the sleep mode.
This happens on our board with a multi-target kernel image when booted
on a machine without audio circuits.
This patch makes the code bail out very early in this special case.
Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Takashi Iwai [Thu, 4 Jun 2009 07:58:18 +0000 (09:58 +0200)]
ASoC: Fix build error in twl4030.c
Fix the (likely cut-n-paste) error by commit 16a30fbb0d3aa4ee829a2dd3d0e314e2b5ae96a9, which causes the error below:
sound/soc/codecs/twl4030.c: In function 'twl4030_read_reg_cache':
sound/soc/codecs/twl4030.c:152: error: 'cache' undeclared (first use in this function)
Cliff Cai [Tue, 2 Jun 2009 04:18:54 +0000 (00:18 -0400)]
ASoC: SSM2602: assign last substream to the master when shutting down
Fixes crash when shutting down.
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Sonic Zhang [Tue, 2 Jun 2009 04:18:57 +0000 (00:18 -0400)]
ASoC: Blackfin: document how anomaly 05000250 is handled
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cliff Cai [Tue, 2 Jun 2009 04:18:56 +0000 (00:18 -0400)]
ASoC: Blackfin: set the transfer size according the ac97_frame size
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cliff Cai [Tue, 2 Jun 2009 04:18:53 +0000 (00:18 -0400)]
ASoC: SSM2602: remove unsupported sample rates
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Peter Ujfalusi [Mon, 1 Jun 2009 11:06:40 +0000 (14:06 +0300)]
ASoC: TWL4030: Check the interface format for 4 channel mode
In addition to the operating mode check, also check the
codec's interface format in case of four channel mode.
If the codec is not in TDM (DSP_A) mode, return with error.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Chaithrika U S [Thu, 28 May 2009 09:10:50 +0000 (05:10 -0400)]
ASoC: Add dummy S/PDIF codec support
McASP on DM646x can operate in DIT (S/PDIF) where no codec is needed.
This patch provides stub codec that can be used in these configurations.
On DM646x EVM the McASP1 is connected to the S/PDIF out.
Signed-off-by: Steve Chen <schen@mvista.com> Signed-off-by: Pavel Kiryukhin <pkiryukhin@ru.mvista.com> Signed-off-by: Naresh Medisetty <naresh@ti.com> Signed-off-by: Chaithrika U S <chaithrika@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Roel Kluin [Thu, 28 May 2009 00:08:39 +0000 (17:08 -0700)]
ASoC: correct print specifiers for unsigneds
Unsigned variables should use `%u' rather than `%d'.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Jon Smirl [Wed, 27 May 2009 05:06:19 +0000 (01:06 -0400)]
ASoC: Modify mpc5200 AC97 driver to use V9 of spin_event_timeout()
The function signature for spin_event_timeout() has changed in version V9.
Adjust the mpc5200 AC97 driver to use the new function.
Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Mark Brown [Tue, 26 May 2009 20:14:59 +0000 (21:14 +0100)]
ASoC: Mark MPC5200 AC97 as BROKEN until PowerPC merge issues are resolved
These drivers use spin_event_timeout() which is only present in the
PowerPC tree at present and which is undergoing some API revisions
so temporarily mark them as BROKEN until these issues are sorted
out.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Jon Smirl [Tue, 26 May 2009 12:34:10 +0000 (08:34 -0400)]
ASoC: AC97 driver for mpc5200
I've implemented retries for when the AC97 hardware doesn't reset on
first try. About 10% of the time both the Efika and pcm030 AC97 codecs
don't reset on first try and need to be poked multiple times. Failure
is indicated by not having the link clock start ticking. Every once in
a while even five pokes won't get the link started and I have to power
cycle.
Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Jon Smirl [Tue, 26 May 2009 12:34:08 +0000 (08:34 -0400)]
ASoC: Main rewite of the mpc5200 audio DMA code
Rewrite the mpc5200 audio DMA code to support both I2S and AC97.
Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Peter Ujfalusi [Mon, 25 May 2009 08:12:13 +0000 (11:12 +0300)]
ASoC: TWL4030: HandsfreeL/R mute DAPM switch
Add DAPM switch for HeadsetL/R mute. Since all bits are are needed
for the HFL/R pop removal to work the switch is using the SW_SHADOW
no HW register for the HandsfreeL/R mute.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Peter Ujfalusi [Mon, 25 May 2009 08:12:11 +0000 (11:12 +0300)]
ASoC: TWL4030: Handsfree pop removal redesign
Move the HandsfreeL/R (IHFL/R) pop removal code from the DAPM_MUX_E
to a more appropriate DAPM_PGA_E widget.
Also fix the power-up sequence to match with the TRM.
The power-down sequence is not described in the TRM, so do it
in a way, which seams like the correct sequence.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Jon Smirl [Sat, 23 May 2009 23:13:03 +0000 (19:13 -0400)]
ASoC: Add a few more mpc5200 PSC defines
Add a few more mpc5200 PSC defines. More bit fields defines for mpc5200
PSC registers.
Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Jon Smirl [Sat, 23 May 2009 23:13:01 +0000 (19:13 -0400)]
ASoC: Rename the PSC functions to DMA
Rename the functions in the mpc5200 DMA file from i2s based names to dma
ones to reflect the file they are in.
Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Jon Smirl [Sat, 23 May 2009 23:12:59 +0000 (19:12 -0400)]
ASoC: Basic split of mpc5200 DMA code out of mpc5200_psc_i2s
Basic split of mpc5200 DMA code out from i2s into a standalone file.
Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Mark Brown [Sun, 24 May 2009 12:32:24 +0000 (13:32 +0100)]
ASoC: Fix minor issues in STAC9766 driver
Fairly minor issues:
- Don't register the DAIs, it's not required for AC97 devices.
- Make unexported functions static.
- Wrap some excessively long lines.
- Undo tab/space breakage.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Peter Ujfalusi [Mon, 18 May 2009 13:02:04 +0000 (16:02 +0300)]
ASoC: TWL4030: Change DAPM routings and controls for DACs and PGAs
Restructuring the twl4030 codec's DAPM routing to be able to handle the power
sequences correctly.
The twl4030 codec internal implementation have this order:
DAC -> Analog PGA -> Mixer/Mux
While the ASoC framework expects the following order:
DAC -> Mixer -> Analog PGA
This patch moves the Analog PGA handling from SND_SOC_DAPM_PGA to _MIXER and
adds two levels of mixer to handle the digital and analog loopback
functionality.
Now the analog loopback does not powers on any of the DACs.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Tested-by: Anuj Aggarwal <anuj.aggarwal@ti.com> Tested-by: Jarkko Nikula <jhnikula@gmail.com> Tested-by: Misael Lopez Cruz <x0052729@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
ASoC: SDP3430: Connect twl4030 voice DAI to McBSP3
Connect twl4030 voice DAI to McBSP3 in sdp3430 machine driver.
Voice DAI init function enables corresponding interface by
writting directly to VOICE_IF codec register.
Signed-off-by: Misael Lopez Cruz <x0052729@ti.com> Acked-by: Peter Ujflausi <peter.ujfalusi@nokia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
ASoC: TWL4030: Add control for selecting codec operation mode
Add a control for selecting the codec operation mode. TWL4030 codec
has two modes:
- Option 1. Audio only (4 audio DACs)
- Option 2. Voice/Audio (2 audio DACs and voice ADC/DAC)
Control is restricted when a stream is ongoing, since codec's
operation mode cannot be changed on-the-fly.
Signed-off-by: Misael Lopez Cruz <x0052729@ti.com> Acked-by: Peter Ujflausi <peter.ujfalusi@nokia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Mark Brown [Sun, 17 May 2009 20:41:23 +0000 (21:41 +0100)]
ASoC: Integrate bias management with DAPM power management
Rather than managing the bias level of the system based on if there is
an active audio stream manage it based on there being an active DAPM
widget. This simplifies the code a little, moving the power handling
into one place, and improves audio performance for bypass paths when no
playbacks or captures are active.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Mark Brown [Sat, 16 May 2009 16:47:29 +0000 (17:47 +0100)]
ASoC: Split DAPM power checks from sequencing of power changes
DAPM has always applied any changes to the power state of widgets as soon
as it has determined that they are required. Instead of doing this store
all the changes that are required on lists of widgets to power up and
down, then iterate over those lists and apply the changes. This changes
the sequence in which changes are implemented, doing all power downs
before power ups and always using the up/down sequences (previously they
were only used when changes were due to DAC/ADC power events). The error
handling is also changed so that we continue attempting to power widgets
if some changes fail.
The main benefit of this is to allow future changes to do optimisations
over the whole power sequence and to reduce the number of walks of the
widget graph required to check the power status of widgets.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
ASoC: TWL4030: Enable/disable voice digital filters
Enable TWL4030 VTXL/VTXR and VRX digital filters for uplink
and downlink paths, respectively.
This patch also corrects voice 8/16kHz mode selection bit
(SEL_16K) of CODEC_MODE register.
Signed-off-by: Misael Lopez Cruz <x0052729@ti.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Takashi Iwai [Fri, 15 May 2009 10:20:52 +0000 (12:20 +0200)]
ASoC: Optimize switch/case in magician.c
Use default to optimize the switch/case in magicial_playback_hw_params(),
which also fixes the compile warnings below:
sound/soc/pxa/magician.c:89: warning: 'acds' may be used uninitialized in this function
sound/soc/pxa/magician.c:89: warning: 'acps' may be used uninitialized in this function
David Brownell [Thu, 14 May 2009 20:01:59 +0000 (13:01 -0700)]
ASoC: DaVinci EVM board support buildfixes
This is a build fix, resyncing the DaVinci EVM ASoC board code
with the version in the DaVinci tree. That resync includes
support for the DM355 EVM, although that board isn't yet in
mainline.
(NOTE: also includes a bugfix to the platform_add_resources
call, recently sent by Chaithrika U S <chaithrika@ti.com> but
not yet merged into the DaVinci tree.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
David Brownell [Thu, 14 May 2009 19:47:42 +0000 (12:47 -0700)]
ASoC: DaVinci I2S updates
This resyncs the DaVinci I2S code with the version in the DaVinci
tree. The behavioral change uses updated clock interfaces which
recently merged to mainline. Two other changes include adding a
comment on the ASP/McBSP/McASP confusion, and dropping pdev->id in
order to support more boards than just the DM644x EVM.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
David Brownell [Thu, 14 May 2009 19:41:22 +0000 (12:41 -0700)]
ASoC: davinci-pcm buildfixes
This is a buildfix for the DaVinci PCM code, resyncing it with
the version in the DaVinci tree. The notable change is using
current EDMA interfaces, which recently merged to mainline.
(The older interfaces never made it into mainline.)
NOTE: open issue, the DMA should be to/from SRAM; see chip
errata for more info. The artifacts are extremely easy to
hear on DM355 hardware (not yet supported in mainline), but
don't seem as audible on DM6446 hardwaare (which does have
mainline support).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Marek Vasut [Thu, 14 May 2009 19:52:46 +0000 (20:52 +0100)]
ASoC: Support AC97 link off by default on WM9712
The WM9712 can be configured by resistor strapping GPIO4 to behave like
the WM9713 and default to leaving the AC97 link disabled after cold
reset until a warm reset occurs. In this configuration we need to issue
a warm reset after cold to bring the link up so do so. The warm reset
will be harmless on systems that don't need it.
[Changelog rewritten to document the reasoning. -- broonie]
Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Karl Beldan [Wed, 13 May 2009 20:16:46 +0000 (22:16 +0200)]
ASoC: pxa2xx-i2s: Handle SACR1_DRPL and SACR1_DREC separately
- hw_params enables both RPL and REC functions each time : Enable the
appropriate function in pxa2xx_i2s_trigger.
- pxa2xx_i2s_shutdown disables i2s anytime one of RPL or REC function is
off : Turn it off only when both functions are off.
Signed-off-by: Karl Beldan <karl.beldan@mobile-devices.fr> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Karl Beldan [Thu, 14 May 2009 08:25:42 +0000 (10:25 +0200)]
ASoC: pxa2xx-i2s: Proper hw initialization
Make sure we are in a know good state at end of probe :
Reset FIFO logic and registers, and make sure REC and RPL functions
along with FIFO service are disabled (SACR0_RST enables REC and RPL).
Resetting loses current settings so remove reset from stream startup.
Now reset occurs only at probe.
Signed-off-by: Karl Beldan <karl.beldan@mobile-devices.fr> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Joonyoung Shim [Mon, 11 May 2009 11:36:08 +0000 (20:36 +0900)]
ASoC: TWL4030: change DAPM for analog microphone selection
The inputs of the twl4030 codec can be mixed, so we will use the mixer
DAPM for the analog microphone registers(0x05, 0x06), but if we enable
more than one input at the same time, the input impedance of the input
amplifier will be reduced.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
sound: remove driver_data direct access of struct device
In the near future, the driver core is going to not allow direct access
to the driver_data pointer in struct device. Instead, the functions
dev_get_drvdata() and dev_set_drvdata() should be used. These functions
have been around since the beginning, so are backwards compatible with
all older kernel versions.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Mike Rapoport [Mon, 11 May 2009 10:11:38 +0000 (13:11 +0300)]
pxa2xx-ac97: fix reset gpio mode setting
Signed-off-by: Mike Rapoport <mike@compulab.co.il> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Mike Rapoport [Mon, 11 May 2009 10:04:55 +0000 (13:04 +0300)]
ASoC: soc-core: fix crash when removing not instantiated card
If the card was not instantiated in snd_soc_instantiate_card, calling
soc-remove will crash because some of codec, cpu_dai and card .remove
methods are called twice.
Fix this by returning from soc_remove immediately.
Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Mark Brown [Sat, 9 May 2009 15:22:58 +0000 (16:22 +0100)]
ASoC: Fix up CODEC DAI formats for big endian CPUs
ASoC uses the standard ALSA data format definitions to specify the wire
format used between the CPU and CODEC. Since the ALSA data formats all
include the endianess of the data but this information is not relevant
by the time the data has been encoded onto the serial link to the CODEC
this means that either all the CODEC drivers need to declare both big and
little endian variants or the core needs to fix up the format constraints
specified by CODEC drivers.
For now take the latter approach - this will need to be revisited if any
CODECs are endianness dependant.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Linus Torvalds [Sat, 9 May 2009 00:00:41 +0000 (17:00 -0700)]
Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6:
mtd: fix timeout in M25P80 driver
mtd: Bug in m25p80.c during whole-chip erase
mtd: expose subpage size via sysfs
mtd: mtd in mtd_release is unused without CONFIG_MTD_CHAR
Linus Torvalds [Fri, 8 May 2009 23:24:25 +0000 (16:24 -0700)]
Merge branch 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Fix return value for sys_ipc
microblaze: Storage class should be before const qualifier
Jean Delvare [Fri, 8 May 2009 18:27:28 +0000 (20:27 +0200)]
hwmon: (w83781d) Fix W83782D support (NULL pointer dereference)
Commit 360782dde00a2e6e7d9fd57535f90934707ab8a8 (hwmon: (w83781d) Stop
abusing struct i2c_client for ISA devices) broke W83782D support for
devices connected on the ISA bus. You will hit a NULL pointer
dereference as soon as you read any device attribute. Other devices,
and W83782D devices on the SMBus, aren't affected.
Reported-by: Michel Abraham Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: Michel Abraham
Peter Horton [Fri, 8 May 2009 12:51:53 +0000 (13:51 +0100)]
mtd: fix timeout in M25P80 driver
Extend erase timeout in M25P80 SPI Flash driver.
The M25P80 drivers fails erasing sectors on a M25P128 because the ready
wait timeout is too short. Change the timeout from a simple loop count to a
suitable number of seconds.
Signed-off-by: Peter Horton <zero@colonel-panic.org> Tested-by: Martin Michlmayr <tbm@cyrius.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Mark Brown [Wed, 6 May 2009 09:36:34 +0000 (10:36 +0100)]
ASoC: Fix file patterns for PXA sound drivers
The file matches for PXA sound drivers missed the generic AC97 support
and were overly specific within sound/soc/pxa, omitting all machine
drivers and the SSP driver.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
The Xen pagetables are no longer implicitly reserved as part of the other
i386_start_kernel reservations, so make sure we explicitly reserve them.
This prevents them from being released into the general kernel free page
pool and reused.
Huang Ying [Fri, 8 May 2009 02:51:41 +0000 (10:51 +0800)]
x86, kexec: fix crashdump panic with CONFIG_KEXEC_JUMP
Tim Starling reported that crashdump will panic with kernel compiled
with CONFIG_KEXEC_JUMP due to null pointer deference in
machine_kexec_32.c: machine_kexec(), when deferencing
kexec_image. Refering to:
http://bugzilla.kernel.org/show_bug.cgi?id=13265
This patch fixes the BUG via replacing global variable reference:
kexec_image in machine_kexec() with local variable reference: image,
which is more appropriate, and will not be null.
Same BUG is in machine_kexec_64.c too, so fixed too in the same way.
[ Impact: fix crash on kexec ]
Reported-by: Tim Starling <tstarling@wikimedia.org> Signed-off-by: Huang Ying <ying.huang@intel.com>
LKML-Reference: <1241751101.6259.85.camel@yhuang-dev.sh.intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
With the introduction of the .brk section, special care must be taken
that no unused page table entries remain if _brk_end and _end are
separated by a 2M page boundary. cleanup_highmap() runs very early and
hence cannot take care of that, hence potential entries needing to be
removed past _brk_end must be cleared once the brk allocator has done
its job.
[ Impact: avoids undesirable TLB aliases ]
Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Jan Beulich [Wed, 6 May 2009 12:02:19 +0000 (13:02 +0100)]
x86: fix boot hang in early_reserve_e820()
If the first non-reserved (sub-)range doesn't fit the size requested,
an endless loop will be entered. If a range returned from
find_e820_area_size() turns out insufficient in size, the range must
be skipped before calling the function again.
[ Impact: fixes boot hang on some platforms ]
Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: (32 commits)
[CIFS] Fix double list addition in cifs posix open code
[CIFS] Allow raw ntlmssp code to be enabled with sec=ntlmssp
[CIFS] Fix SMB uid in NTLMSSP authenticate request
[CIFS] NTLMSSP reenabled after move from connect.c to sess.c
[CIFS] Remove sparse warning
[CIFS] remove checkpatch warning
[CIFS] Fix final user of old string conversion code
[CIFS] remove cifs_strfromUCS_le
[CIFS] NTLMSSP support moving into new file, old dead code removed
[CIFS] Fix endian conversion of vcnum field
[CIFS] Remove trailing whitespace
[CIFS] Remove sparse endian warnings
[CIFS] Add remaining ntlmssp flags and standardize field names
[CIFS] Fix build warning
cifs: fix length handling in cifs_get_name_from_search_buf
[CIFS] Remove unneeded QuerySymlink call and fix mapping for unmapped status
[CIFS] rename cifs_strndup to cifs_strndup_from_ucs
Added loop check when mounting DFS tree.
Enable dfs submounts to handle remote referrals.
[CIFS] Remove older session setup implementation
...
David Howells [Thu, 7 May 2009 10:41:37 +0000 (11:41 +0100)]
NOMMU: Don't check vm_region::vm_start is page aligned in add_nommu_region()
Don't check vm_region::vm_start is page aligned in add_nommu_region() because
the region may reflect some non-page-aligned mapped file, such as could be
obtained from RomFS XIP.
Linus Torvalds [Thu, 7 May 2009 19:01:41 +0000 (12:01 -0700)]
Merge branch 'for-linus' of git://neil.brown.name/md
* 'for-linus' of git://neil.brown.name/md:
md: remove rd%d links immediately after stopping an array.
md: remove ability to explicit set an inactive array to 'clean'.
md: constify VFTs
md: tidy up status_resync to handle large arrays.
md: fix some (more) errors with bitmaps on devices larger than 2TB.
md/raid10: don't clear bitmap during recovery if array will still be degraded.
md: fix loading of out-of-date bitmap.
Linus Torvalds [Tue, 5 May 2009 15:17:43 +0000 (08:17 -0700)]
random: make get_random_int() more random
It's a really simple patch that basically just open-codes the current
"secure_ip_id()" call, but when open-coding it we now use a _static_
hashing area, so that it gets updated every time.
And to make sure somebody can't just start from the same original seed of
all-zeroes, and then do the "half_md4_transform()" over and over until
they get the same sequence as the kernel has, each iteration also mixes in
the same old "current->pid + jiffies" we used - so we should now have a
regular strong pseudo-number generator, but we also have one that doesn't
have a single seed.
Note: the "pid + jiffies" is just meant to be a tiny tiny bit of noise. It
has no real meaning. It could be anything. I just picked the previous
seed, it's just that now we keep the state in between calls and that will
feed into the next result, and that should make all the difference.
I made that hash be a per-cpu data just to avoid cache-line ping-pong:
having multiple CPU's write to the same data would be fine for randomness,
and add yet another layer of chaos to it, but since get_random_int() is
supposed to be a fast interface I did it that way instead. I considered
using "__raw_get_cpu_var()" to avoid any preemption overhead while still
getting the hash be _mostly_ ping-pong free, but in the end good taste won
out.
Paul Gortmaker [Thu, 7 May 2009 15:18:40 +0000 (16:18 +0100)]
[ARM] 5507/1: support R_ARM_MOVW_ABS_NC and MOVT_ABS relocation types
From: Bruce Ashfield <bruce.ashfield@windriver.com>
To fully support the armv7-a instruction set/optimizations, support
for the R_ARM_MOVW_ABS_NC and R_ARM_MOVT_ABS relocation types is
required.
The MOVW and MOVT are both load-immediate instructions, MOVW loads 16
bits into the bottom half of a register, and MOVT loads 16 bits into the
top half of a register.
The relocation information for these instructions has a full 32 bit
value, plus an addend which is stored in the 16 immediate bits in the
instruction itself. The immediate bits in the instruction are not
contiguous (the register # splits it into a 4 bit and 12 bit value),
so the addend has to be extracted accordingly and added to the value.
The value is then split and put into the instruction; a MOVW uses the
bottom 16 bits of the value, and a MOVT uses the top 16 bits.
Signed-off-by: David Borman <david.borman@windriver.com> Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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