Heiner Kallweit [Sat, 25 Mar 2017 10:28:13 +0000 (11:28 +0100)]
mmc: meson-gx: add CMD23 mode
CMD23 mode (use "set block count" command before transferring multiple
data blocks) typically is more performant as host / card know upfront
how many data blocks to expect. Therefore add support for this mode to
the driver.
Heiner Kallweit [Sat, 25 Mar 2017 10:24:41 +0000 (11:24 +0100)]
mmc: meson-gx: use per port interrupt names
So far the driver name is used as interrupt description, therefore in
/proc/interrupts it's not possible to tell which interrupt belongs to
which port. Change this by switching to NULL what causes the default
(device name) to be used. In our case that's the DT node name.
Heiner Kallweit [Sat, 25 Mar 2017 10:23:24 +0000 (11:23 +0100)]
mmc: meson-gx: use bitfield macros
Use GENMASK consistently for all bit masks and switch to using the
bitfield macros FIELD_GET and FIELD_PREP. This hides parts of the
complexity of dealing with bit fields.
Shawn Lin [Fri, 24 Mar 2017 07:50:12 +0000 (15:50 +0800)]
mmc: sdhci: clarify the get_timeout_clock callback
Currently the get_timeout_clock callback doesn't clearly
have a statement that it needs the variant drivers to return
the timeout clock rate in kHz if the SDHCI_TIMEOUT_CLK_UNIT
isn't present, otherwise the variant drivers should return it
in MHz. It's also very likely that further variant drivers which
are going to use this callback will be confused by this situation.
Given the fact that moderm sdhci variant hosts are very prone to get
the timeout clock from common clock framework (actually the only three
users did that), it's more natural to return the value in Hz and we
make an explicit comment there. Then we put the unit conversion inside
the sdhci core. Thus will improve the code and prevent further misuses.
Reported-by: Anssi Hannula <anssi.hannula@bitwise.fi> Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Icenowy Zheng [Thu, 16 Mar 2017 13:29:03 +0000 (21:29 +0800)]
mmc: sunxi: change controller error info to debug level
The controller's errors are usually normal (for example, for MMC or SDIO
cards, some errors are expected to happen; and for boards without a
dedicated card detect pin the error info will even flood console and
hide other normal messages) and hard to understand.
Change their print level to debug, thus it won't be shown to generic
users.
Heiner Kallweit [Wed, 22 Mar 2017 21:33:53 +0000 (22:33 +0100)]
mmc: meson-gx: improve setting data->bytes_xfered
Centralize setting data->bytes_xfered in one place and make sure
that the number of transfererd bytes is set only if we receive
the end-of-chain interrupt and there was no error.
yong mao [Wed, 15 Mar 2017 07:26:40 +0000 (15:26 +0800)]
mmc: mediatek: Use data tune for CMD line tune
If we don't select a set of better parameters for our emmc host,
It may easily occur CMD response CRC error. And also it may cause
cannot boot up issue.
Fot getting a set of better parameters, our emmc host supports
data tune mechanism.Therefore, our emmc driver also should change
to use data tune for CMD line.
Because our emmc host use the different clock source to sample the
CMD signal between HS200 and HS400 mode, the parameters are also
different between these two modes.
Separate cmd internal delay for HS200/HS400 mode.
This change can fix "System can not boot up" issue.
yong mao [Wed, 15 Mar 2017 07:26:38 +0000 (15:26 +0800)]
mmc: dt-bindings: update Mediatek MMC bindings
Add description for mediatek,hs200-cmd-int-delay
Add description for mediatek,hs400-cmd-int-delay
Add description for mediatek,hs400-cmd-resp-sel-rising
Signed-off-by: Yong Mao <yong.mao@mediatek.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Heiner Kallweit [Wed, 22 Mar 2017 20:59:29 +0000 (21:59 +0100)]
mmc: sdio: improve mmc_io_rw_extended
Improve mmc_io_rw_extended a little:
- using DIV_ROUND_UP achieves the same but is better readable
- simplify code by using sg_set_buf
- simplify one statement by using -= operator
Current code gets number of taps only once and keeps the value. This is
not correct, we need to obtain it every time before executing tuning,
so remove the outer if-block.
Signed-off-by: Masaharu Hayakawa <masaharu.hayakawa.ry@renesas.com>
[wsa: extracted from a larger patch and reworded commit message] Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Wolfram Sang [Thu, 16 Mar 2017 10:56:02 +0000 (11:56 +0100)]
mmc: tmio: always unmap DMA before waiting for interrupt
In the (maybe academical) case, we don't get a DATAEND interrupt after
DMA completed, we will wait endlessly for the completion to complete.
This is not bad per se, since we have a more generic completion tracking
a timeout. In that rare case, however, the DMA buffer will not get
unmapped and we have a leak. Reorder the code, so unmapping will always
take place.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Adrian Hunter [Mon, 20 Mar 2017 17:50:51 +0000 (19:50 +0200)]
mmc: sdhci-pci: Let suspend/resume callbacks replace default callbacks
The suspend / resume callbacks lack the flexibility to allow a device to
specify a different function entirely. Change them around so that device
functions are called directly and they in turn can call the default
implementations if needed.
Adrian Hunter [Mon, 20 Mar 2017 17:50:48 +0000 (19:50 +0200)]
mmc: sdhci-pci: Let devices define how to add the host
SDHCI provides more flexibility than simply calling sdhci_add_host(). Make
that available by allowing devices to specify their own ->add_host()
function.
Adrian Hunter [Mon, 20 Mar 2017 17:50:38 +0000 (19:50 +0200)]
mmc: sdhci: Reduce spin lock usage in sdhci_execute_tuning
Tuning execution is already synchronized with respect to other host
operations by upper layers "claiming" the host, which also takes care of
runtime pm. There can be no requests in progress. Retain the spin lock
usage only for ensuring that sending tuning commands is synchronized with
respect to the interrupt handler.
Adrian Hunter [Mon, 20 Mar 2017 17:50:37 +0000 (19:50 +0200)]
mmc: sdhci: Do not use spin lock in set_ios paths
The spin lock is not necessary in set_ios. Anything that is racing with
changes to the I/O state is already broken. The mmc core already provides
synchronization via "claiming" the host. So remove spin_lock and friends
from sdhci_set_ios and related callbacks.
Adrian Hunter [Mon, 20 Mar 2017 17:50:33 +0000 (19:50 +0200)]
mmc: sdhci-pci: Let devices define their own private data
Let devices define their own private data to facilitate device-specific
operations. The size of the private structure is specified in the
sdhci_pci_fixes structure, then sdhci_pci_probe_slot() will allocate extra
space for it, and sdhci_pci_priv() can be used to get a reference to it.
Adrian Hunter [Mon, 20 Mar 2017 17:50:32 +0000 (19:50 +0200)]
mmc: sdhci: Let drivers decide whether to use mmc_retune_needed() with pm
Devices might save and restore tuning values so that re-tuning might not be
needed after a pm transition. Let drivers decide by pushing the
mmc_retune_needed() logic down to them.
Adrian Hunter [Mon, 20 Mar 2017 17:50:31 +0000 (19:50 +0200)]
mmc: sdhci: Optimize delay loops
The delay loops for reset and clock enable always take at least 1 ms
because they use mdelay(1). However they can take a lot less time e.g. less
than 50us. Use ktime and reduce the delay to 10 microseconds per loop.
Eric Anholt [Wed, 8 Mar 2017 09:19:03 +0000 (10:19 +0100)]
mmc: bcm2835: Add new driver for the sdhost controller.
The 2835 has two SD controllers: The Arasan sdhci controller (supported
by the iproc driver) and a custom sdhost controller. This patch adds a
driver for the latter.
The sdhci controller supports both sdcard and sdio. The sdhost
controller supports the sdcard only, but has better performance. Also
note that the rpi3 has sdio wifi, so driving the sdcard with the sdhost
controller allows to use the sdhci controller for wifi support.
The configuration is done by devicetree via pin muxing. Both SD
controller are available on the same pins (2 pin groups = pin 22 to 27 +
pin 48 to 53). So it's possible to use both SD controllers at the same
time with different pin groups.
The code was originally written by Phil Elwell in the downstream
Rasbperry Pi tree. In preparation for the upstream merge it was
cleaned up and the code base was moderized by Eric Anholt, Stefan
Wahren and Gerd Hoffmann.
Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
tcharding [Wed, 15 Mar 2017 08:48:04 +0000 (19:48 +1100)]
mmc: core: simplify return code
File contains multiple functions doing variations on the same thing,
sdio_readb(), sdio_writeb()f, sdio_readw(), sdio_writew()
etc. Although the functions have very similar logic the code is laid
out in a variety of ways. This makes it overly complicated to
read. There is a already a nice clean chunk of code, if we use this
format for all instances then we will have cleaned up the code,
reduced the line count and lessened the cognitive load required while
reading. Less lines equals less bugs.
Pick the most simple and clear code flow and change all functions to
be the same.
Signed-off-by: Tobin C. Harding <me@tobin.cc> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Michał Zegan [Tue, 14 Mar 2017 20:05:20 +0000 (21:05 +0100)]
mmc: meson-gx: fix error path when driver initialization fails before enabling clocks
This patch fixes the case where meson_mmc_probe function fails before
core_clk is enabled.
Originally, that would result in a try to disable the core clock, and if
it was not already enabled, it would result in a kernel warning.
This issue is similar to the one with div_clk.
Fix it by introducing another error path used only between successfully
enabling the core clock, and successfully enabling the div clock.
That would ensure that core clock is disabled only if it was enabled before.
Thierry Reding [Wed, 8 Mar 2017 19:00:39 +0000 (20:00 +0100)]
mmc: tegra: Support module reset
The device tree binding for the SDHCI controller found on Tegra SoCs
specifies that a reset control can be provided by the device tree. No
code was ever added to support the module reset, which can cause the
driver to try and access registers from a module that's in reset. On
most Tegra SoC generations doing so would cause a hang.
Note that it's unlikely to see this happen because on most platforms
these resets will have been deasserted by the bootloader. However the
portability can be improved by making sure the driver deasserts the
reset before accessing any registers.
Since resets are synchronous on Tegra SoCs, the platform driver needs
to implement a custom ->remove() callback now to make sure the clock
is disabled after the reset is asserted.
Wolfram Sang [Tue, 14 Mar 2017 10:09:19 +0000 (11:09 +0100)]
mmc: host: tmio: fill in response from auto cmd12
After we received the dataend interrupt, R1 response register carries
the value from the automatically generated stop command. Report that
info back to the MMC block layer, so we will be notified in case of e.g.
ECC errors which happened during the last transfer.
Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Wolfram Sang [Fri, 17 Feb 2017 18:22:41 +0000 (19:22 +0100)]
mmc: tmio: ensure end of DMA and SD access are in sync
The current code assumes that DMA is finished before SD access end is
flagged. Thus, it schedules the 'dma_complete' tasklet in the SD card
interrupt routine when DATAEND is set. The assumption is not safe,
though. Even by mounting an SD card, it can be seen that sometimes DMA
complete is first, sometimes DATAEND. It seems they are usually close
enough timewise to not cause problems. However, a customer reported that
with CMD53 sometimes things really break apart. As a result, the BSP has
a patch which introduces flags for both events and makes sure both flags
are set before scheduling the tasklet. The customer accepted the patch,
yet it doesn't seem a proper upstream solution to me.
This patch refactors the code to replace the tasklet with already
existing and more lightweight mechanisms. First of all, we set the
callback in a DMA descriptor to automatically get notified when DMA is
done. In the callback, we then use a completion to make sure the SD
access has already ended. Then, we proceed as before.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Heiner Kallweit [Sat, 4 Mar 2017 12:36:45 +0000 (13:36 +0100)]
mmc: meson-gx: remove member mrq from struct meson_host
Struct mmc_command includes a reference to the related mmc_request.
Therefore we don't have to store mrq separately in struct meson_host.
And we can remove some now unneeded WARN_ON's.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Acked-by: Kevin Hilman <khilman@baylibre.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Heiner Kallweit [Sat, 4 Mar 2017 12:35:13 +0000 (13:35 +0100)]
mmc: meson-gx: improve initial configuration
Config values which are not changed during runtime we can set
in the probe function already.
The block size setting is overwritten later in
meson_mmc_start_cmd anyway if needed, so it doesn't harm if we
remove this setting in meson_mmc_set_ios.
In addition write config register only if configuration changed.
Don't change the location of clock initialization as in an
earlier version of the patch, this change causes a hang.
This issue was reported and fix suggested by:
Helmut Klein <hgkr.klein@gmail.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Acked-by: Kevin Hilman <khilman@baylibre.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Heiner Kallweit [Sat, 4 Mar 2017 12:25:14 +0000 (13:25 +0100)]
mmc: meson-gx: fix error path in meson_mmc_clk_init / meson_mmc_probe
The condition should be "if (ret)" as the disable/unprepare is
supposed to be executed if the previous command fails.
In addition adjust the error path in probe to properly deal
with the case that cfg_div_clk can be registered successfully
but enable/prepare fails.
In this case we shouldn't call clk_disable_unprepare.
Reported-by: Michał Zegan <webczat_200@poczta.onet.pl> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Acked-by: Kevin Hilman <khilman@baylibre.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Heiner Kallweit [Sat, 4 Mar 2017 12:22:57 +0000 (13:22 +0100)]
mmc: meson-gx: remove unneeded variable in meson_mmc_clk_init
Because the DT requires a fixed number of mux parent clocks,
variable mux_parent_count can be replaced with constant
MUX_CLK_NUM_PARENTS, so remove it.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Acked-by: Kevin Hilman <khilman@baylibre.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Heiner Kallweit [Sat, 4 Mar 2017 12:19:23 +0000 (13:19 +0100)]
mmc: meson-gx: simplify bounce buffer setting in meson_mmc_start_cmd
Core ensures that there are no commands with cmd->data being set and
nothing to transfer. And we don't have to reset bit CMD_CFG_DATA_NUM
because cmd_cfg was zero-initialized and this bit isn't set.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Acked-by: Kevin Hilman <khilman@baylibre.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Merge tag 'upstream-4.11-rc7' of git://git.infradead.org/linux-ubifs
Pull UBI/UBIFS fixes from Richard Weinberger:
"This contains fixes for issues in both UBI and UBIFS:
- more O_TMPFILE fallout
- RENAME_WHITEOUT regression due to a mis-merge
- memory leak in ubifs_mknod()
- power-cut problem in UBI's update volume feature"
* tag 'upstream-4.11-rc7' of git://git.infradead.org/linux-ubifs:
ubifs: Fix O_TMPFILE corner case in ubifs_link()
ubifs: Fix RENAME_WHITEOUT support
ubifs: Fix debug messages for an invalid filename in ubifs_dump_inode
ubifs: Fix debug messages for an invalid filename in ubifs_dump_node
ubifs: Remove filename from debug messages in ubifs_readdir
ubifs: Fix memory leak in error path in ubifs_mknod
ubi/upd: Always flush after prepared for an update
2) Verify lengths properly in IPSEC reqeusts, from Herbert Xu.
3) Fix out of bounds access in ipv6 segment routing code, from David
Lebrun.
4) Don't write into the header of cloned SKBs in smsc95xx driver, from
James Hughes.
5) Several other drivers have this bug too, fix them. From Eric
Dumazet.
6) Fix access to uninitialized data in TC action cookie code, from
Wolfgang Bumiller.
7) Fix double free in IPV6 segment routing, again from David Lebrun.
8) Don't let userspace set the RTF_PCPU flag, oops. From David Ahern.
9) Fix use after free in qrtr code, from Dan Carpenter.
10) Don't double-destroy devices in ip6mr code, from Nikolay
Aleksandrov.
11) Don't pass out-of-range TX queue indices into drivers, from Tushar
Dave.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (30 commits)
netpoll: Check for skb->queue_mapping
ip6mr: fix notification device destruction
bpf, doc: update bpf maintainers entry
net: qrtr: potential use after free in qrtr_sendmsg()
bpf: Fix values type used in test_maps
net: ipv6: RTF_PCPU should not be settable from userspace
gso: Validate assumption of frag_list segementation
kaweth: use skb_cow_head() to deal with cloned skbs
ch9200: use skb_cow_head() to deal with cloned skbs
lan78xx: use skb_cow_head() to deal with cloned skbs
sr9700: use skb_cow_head() to deal with cloned skbs
cx82310_eth: use skb_cow_head() to deal with cloned skbs
smsc75xx: use skb_cow_head() to deal with cloned skbs
ipv6: sr: fix double free of skb after handling invalid SRH
MAINTAINERS: Add "B:" field for networking.
net sched actions: allocate act cookie early
qed: Fix issue in populating the PFC config paramters.
qed: Fix possible system hang in the dcbnl-getdcbx() path.
qed: Fix sending an invalid PFC error mask to MFW.
qed: Fix possible error in populating max_tc field.
...
Tushar Dave [Thu, 20 Apr 2017 22:57:31 +0000 (15:57 -0700)]
netpoll: Check for skb->queue_mapping
Reducing real_num_tx_queues needs to be in sync with skb queue_mapping
otherwise skbs with queue_mapping greater than real_num_tx_queues
can be sent to the underlying driver and can result in kernel panic.
One such event is running netconsole and enabling VF on the same
device. Or running netconsole and changing number of tx queues via
ethtool on same device.
Andrey Konovalov reported a BUG caused by the ip6mr code which is caused
because we call unregister_netdevice_many for a device that is already
being destroyed. In IPv4's ipmr that has been resolved by two commits
long time ago by introducing the "notify" parameter to the delete
function and avoiding the unregister when called from a notifier, so
let's do the same for ip6mr.
Reported-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Thu, 20 Apr 2017 15:27:58 +0000 (17:27 +0200)]
bpf, doc: update bpf maintainers entry
Add various related files that have been missing under
BPF entry covering essential parts of its infrastructure
and also add myself as co-maintainer.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Thu, 20 Apr 2017 10:21:30 +0000 (13:21 +0300)]
net: qrtr: potential use after free in qrtr_sendmsg()
If skb_pad() fails then it frees the skb so we should check for errors.
Fixes: bdabad3e363d ("net: Add Qualcomm IPC router") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David Miller [Thu, 20 Apr 2017 19:20:16 +0000 (15:20 -0400)]
bpf: Fix values type used in test_maps
Maps of per-cpu type have their value element size adjusted to 8 if it
is specified smaller during various map operations.
This makes test_maps as a 32-bit binary fail, in fact the kernel
writes past the end of the value's array on the user's stack.
To be quite honest, I think the kernel should reject creation of a
per-cpu map that doesn't have a value size of at least 8 if that's
what the kernel is going to silently adjust to later.
If the user passed something smaller, it is a sizeof() calcualtion
based upon the type they will actually use (just like in this testcase
code) in later calls to the map operations.
Fixes: df570f577231 ("samples/bpf: unit test for BPF_MAP_TYPE_PERCPU_ARRAY") Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org>
Andrey's syzkaller program passes rtmsg.rtmsg_flags with the RTF_PCPU bit
set. Flags passed to the kernel are blindly copied to the allocated
rt6_info by ip6_route_info_create making a newly inserted route appear
as though it is a per-cpu route. ip6_rt_cache_alloc sees the flag set
and expects rt->dst.from to be set - which it is not since it is not
really a per-cpu copy. The subsequent call to __ip6_dst_alloc then
generates the fault.
Fix by checking for the flag and failing with EINVAL.
Fixes: d52d3997f843f ("ipv6: Create percpu rt6_info") Reported-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ilan Tayari [Wed, 19 Apr 2017 18:26:07 +0000 (21:26 +0300)]
gso: Validate assumption of frag_list segementation
Commit 07b26c9454a2 ("gso: Support partial splitting at the frag_list
pointer") assumes that all SKBs in a frag_list (except maybe the last
one) contain the same amount of GSO payload.
This assumption is not always correct, resulting in the following
warning message in the log:
skb_segment: too many frags
For example, mlx5 driver in Striding RQ mode creates some RX SKBs with
one frag, and some with 2 frags.
After GRO, the frag_list SKBs end up having different amounts of payload.
If this frag_list SKB is then forwarded, the aforementioned assumption
is violated.
Validate the assumption, and fall back to software GSO if it not true.
Change-Id: Ia03983f4a47b6534dd987d7a2aad96d54d46d212 Fixes: 07b26c9454a2 ("gso: Support partial splitting at the frag_list pointer") Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 19 Apr 2017 16:59:26 +0000 (09:59 -0700)]
kaweth: use skb_cow_head() to deal with cloned skbs
We can use skb_cow_head() to properly deal with clones,
especially the ones coming from TCP stack that allow their head being
modified. This avoids a copy.
Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: James Hughes <james.hughes@raspberrypi.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 19 Apr 2017 16:59:25 +0000 (09:59 -0700)]
ch9200: use skb_cow_head() to deal with cloned skbs
We need to ensure there is enough headroom to push extra header,
but we also need to check if we are allowed to change headers.
skb_cow_head() is the proper helper to deal with this.
Fixes: 4a476bd6d1d9 ("usbnet: New driver for QinHeng CH9200 devices") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: James Hughes <james.hughes@raspberrypi.org> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 19 Apr 2017 16:59:24 +0000 (09:59 -0700)]
lan78xx: use skb_cow_head() to deal with cloned skbs
We need to ensure there is enough headroom to push extra header,
but we also need to check if we are allowed to change headers.
skb_cow_head() is the proper helper to deal with this.
Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: James Hughes <james.hughes@raspberrypi.org> Cc: Woojung Huh <woojung.huh@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
projects / mirror_ubuntu-hirsute-kernel.git / log