| Age | Commit message (Collapse) | Author |
|---|
|
There are common steps when releasing an accepted or unaccepted socket.
Move this code into a common routine.
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Florian Westphal says:
====================
net: ipv4: fix circular-list infinite loop
Tariq and Ran reported a regression caused by net-next commit
2638eb8b50cf ("net: ipv4: provide __rcu annotation for ifa_list").
This happens when net.ipv4.conf.$dev.promote_secondaries sysctl is
enabled -- we can arrange for ifa->next to point at ifa, so next
process that tries to walk the list loops forever.
Fix this and extend rtnetlink.sh with a small test case for this.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
This exercises the 'promote_secondaries' code path.
Without previous fix, this triggers infinite loop/soft lockup:
ifconfig process spinning at 100%, never to return.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
secondary address promotion causes infinite loop -- it arranges
for ifa->ifa_next to point back to itself.
Problem is that 'prev_prom' and 'last_prim' might point at the same entry,
so 'last_sec' pointer must be obtained after prev_prom->next update.
Fixes: 2638eb8b50cf ("net: ipv4: provide __rcu annotation for ifa_list")
Reported-by: Ran Rozenstein <ranro@mellanox.com>
Reported-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
main_proc_lock and int_lock (in mwifiex_adapter) are the only spinlocks
used in hardirq contexts. The rest are only in task or softirq contexts.
Convert every other lock from *_irq{save,restore}() variants to _bh()
variants.
This is a mechanical transformation of all spinlock usage in mwifiex
using the following:
Step 1:
I ran this nasty sed script:
sed -i -E '/spin_lock_irqsave|spin_unlock_irqrestore/ {
/main_proc_lock|int_lock/! {
s:(spin_(un|)lock)_irq(save|restore):\1_bh: ;
# Join broken lines.
:a /;$/! {
N;
s/\s*\n\s*//;
ba
}
/,.*\);$/ s:,.*\):\):
}
}' drivers/net/wireless/marvell/mwifiex/*
Step 2:
Manually delete the flags / ra_list_flags args from:
mwifiex_send_single_packet()
mwifiex_11n_aggregate_pkt()
mwifiex_send_processed_packet()
which are now unused.
Step 3:
Apply this semantic patch (coccinelle) to remove the unused 'flags'
variables:
// <smpl>
@@
type T;
identifier i;
@@
(
extern T i;
|
- T i;
... when != i
)
// </smpl>
(Usage is something like this:
make coccicheck COCCI=./patch.cocci MODE=patch M=drivers/net/wireless/marvell/mwifiex/
although this skips *.h files for some reasons, so I had to massage
stuff.)
Testing: I've played with a variety of stress tests, including download
stress tests on the same APs which caught regressions with commit
5188d5453bc9 ("mwifiex: restructure rx_reorder_tbl_lock usage"). I've
primarily tested on Marvell 8997 / PCIe, although I've given 8897 / SDIO
a quick spin as well.
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
|
|
mwifiex_11n_scan_and_dispatch() and
mwifiex_11n_dispatch_pkt_until_start_win() share similar patterns, where
they perform a few different actions on the same table, using the same
lock, but non-atomically. There have been other attempts to clean up
this sort of behavior, but they have had problems (incomplete;
introducing new deadlocks).
We can improve these functions' atomicity by queueing up our RX packets
in a list, to dispatch at the end of the function. This avoids problems
of another operation modifying the table in between our dispatch and
rotation operations.
This was inspired by investigations around this:
http://lkml.kernel.org/linux-wireless/20181130175957.167031-1-briannorris@chromium.org
Subject: [4.20 PATCH] Revert "mwifiex: restructure rx_reorder_tbl_lock usage"
While the original (now-reverted) patch had good intentions in
restructuring some of the locking patterns in this driver, it missed an
important detail: we cannot defer to softirq contexts while already in
an atomic context. We can help avoid this sort of problem by separating
the two steps of:
(1) iterating / clearing the mwifiex reordering table
(2) dispatching received packets to upper layers
This makes it much harder to make lock recursion mistakes, as these
two steps no longer need to hold the same locks.
Testing: I've played with a variety of stress tests, including download
stress tests on the same APs which caught regressions with commit
5188d5453bc9 ("mwifiex: restructure rx_reorder_tbl_lock usage"). I've
primarily tested on Marvell 8997 / PCIe, although I've given 8897 / SDIO
a quick spin as well.
Signed-off-by: Brian Norris <briannorris@chromium.org>
Acked-by: Ganapathi Bhat <gbhat@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
|
|
Commit f8f527b16db5 ("mt76: usb: use EP max packet aligned buffer sizes
for rx") breaks A-MSDU support. When A-MSDU is enable the device can
receive frames up to q->buf_size but they will be discarded in
mt76u_process_rx_entry since there is no enough room for
skb_shared_info. Fix the issue reallocating the skb and copying in the
linear area the first 128B of the received frames and in the frag_list
the remaining part
Fixes: f8f527b16db5 ("mt76: usb: use EP max packet aligned buffer sizes for rx")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
|
|
We need to convert all old gpio irqchips to pass the irqchip
setup along when adding the gpio_chip.
For chained irqchips this is a pretty straight-forward
conversion.
Take this opportunity to add a local dev pointer and
use devm_gpiochip_add() so we can get rid of the remove()
callback altogether.
Cc: linux-mips@linux-mips.org
Acked-by: Alban Bedel <albeu@free.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
When parsing an ethtool_rx_flow_spec, users can specify an ethernet flow
which could contain matches based on the ethernet header, such as the
MAC address, the VLAN tag or the ethertype.
ETHER_FLOW uses the src and dst ethernet addresses, along with the
ethertype as keys. Matches based on the vlan tag are also possible, but
they are specified using the special FLOW_EXT flag.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Acked-by: Pablo Neira Ayuso <pablo@gnumonks.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
When ceph_mdsc_build_path is handed a positive dentry, it will return a
zero-length path string with the base set to that dentry. This is not
what we want. Always include at least one path component in the string.
ceph_mdsc_build_path has behaved this way for a long time but it didn't
matter until recent d_name handling rework.
Fixes: 964fff7491e4 ("ceph: use ceph_mdsc_build_path instead of clone_dentry_name")
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
|
|
The function tegra_gpio_debuginit() just calls debugfs_create_file()
and given that there is already a stub function implemented for
debugfs_create_file() when CONFIG_DEBUG_FS is not enabled, there is
no need for the function tegra_gpio_debuginit() and so remove it.
Finally, use a space and not a tab between the #ifdef and
CONFIG_DEBUG_FS.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
Lets add the MODULE_TABLE and platform id_table entries so that
the SPE driver can attach to the ACPI platform device created by
the core pmu code.
Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
|
|
ACPI 6.3 adds additional fields to the MADT GICC
structure to describe SPE PPI's. We pick these out
of the cached reference to the madt_gicc structure
similarly to the core PMU code. We then create a platform
device referring to the IRQ and let the user/module loader
decide whether to load the SPE driver.
Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
|
|
ACPI 6.3 adds a flag to indicate that child nodes are all
identical cores. This is useful to authoritatively determine
if a set of (possibly offline) cores are identical or not.
Since the flag doesn't give us a unique id we can generate
one and use it to create bitmaps of sibling nodes, or simply
in a loop to determine if a subset of cores are identical.
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
|
|
The ACPI specification implies that the IDENTICAL flag should be
set on all non leaf nodes where the children are identical.
This means that we need to be searching for the last node with
the identical flag set rather than the first one.
Since this flag is also dependent on the table revision, we
need to add a bit of extra code to verify the table revision,
and the next node's state in the traversal. Since we want to
avoid function pointers here, lets just special case
the IDENTICAL flag.
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
|
|
Switch to the "marvell,armada-38x-uart" driver variant to empty
the UART buffer before writing to the UART_LCR register.
Signed-off-by: Joshua Scott <joshua.scott@alliedtelesis.co.nz>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>.
Cc: stable@vger.kernel.org
Fixes: 43e28ba87708 ("ARM: dts: Use armada-370-xp as a base for armada-xp-98dx3236")
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
|
|
.. as it is only called at early bootup stage.
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: jailhouse-dev@googlegroups.com
Link: https://lkml.kernel.org/r/1561539289-29180-1-git-send-email-zhenzhong.duan@oracle.com
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into devel
gpio: updates for v5.3
- add include/linux/gpio.h to .gitignore in /tools
- improve and simplify code in the em driver
- simplify code in max732x by using devm helpers (including the new
devm_i2c_new_dummy_device())
- fix SPDX header for madera
- remove checking of return values of debugfs routines in gpio-mockup
|
|
The siox driver is hardcoding a default type of
IRQ_TYPE_EDGE_RISING to the irq helper, but this should only
be applicable to old boardfiles and odd device tree irqchips
with just onecell irq (no flags). I doubt this is the case
with the siox, I think all consumers specify the flags they
use in the device tree.
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
gpiochip_remove() was called on the errorpath if
gpiochip_add() failed: this is wrong, if the chip failed
to add it is not there so it should not be removed.
Fixes: be8c8facc707 ("gpio: new driver to work with a 8x12 siox")
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
We need to convert all old gpio irqchips to pass the irqchip
setup along when adding the gpio_chip.
For chained irqchips this is a pretty straight-forward
conversion.
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Tested-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
It is fine to ignore the return value (and encouraged),
so no need to cast away the return value, you will not get
a build warning at all.
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
It is fine to ignore the return value (and encouraged), so need to cast
away the return value, you will not get a build warning at all.
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
Sort the definitions for the individual GPIO drivers
in the Makefile by object file name. Align all entries
while we're at it.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
Reduce driver init boilerplate by using the new
module_siox_driver() macro.
Signed-off-by: Enrico Weigelt <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
Add more helper macros for trivial driver init cases, similar to the
already existing module_platform_driver() or module_i2c_driver().
This helps to reduce driver init boilerplate.
Signed-off-by: Enrico Weigelt <info@metux.net>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
this driver deserves a bit more cleanup, to get rid of the global
variable giu_base, which makes it single-instance-only.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
don't need the temporary variable "dev", directly use &pdev->dev
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
We already have the struct device* pointer in a local variable,
so we can write this a bit shorter.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
A tab sneaked in, where it shouldn't be.
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
Improve readability a bit by commenting #if/#else/#endif statements
with the checked preprocessor symbols.
Signed-off-by: Enrico Weigelt <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
The pointer to the struct platform_device in the driver's private
data struct is never used and therefore can be dropped.
Signed-off-by: Enrico Weigelt <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
We should really move the RCU directory there as well, but that can wait
for another day.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
|
|
Add TOC tree hooks for:
- rcu
- listRCU
- UP
Signed-off-by: Jiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
|
|
Rename the following files to reST:
- rcu.txt
- listRCU.txt
- UP.txt
Signed-off-by: Jiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
|
|
RCU UP systems reST markup.
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Jiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
|
|
RCU linked list reST markup.
Signed-off-by: Jiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
|
|
RCU basic concepts reST markup.
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Jiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
|
|
When calling debugfs functions, there is no need to ever check the
return value. The function can work or not, but the code logic should
never do something different based on this.
Cc: Bamvor Jian Zhang <bamv2005@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[Bartosz: removed one more check for debugfs return value]
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
|
|
bio_flush_dcache_pages() is unused. Remove it.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
Return the engine type from the function looking at the registers, and
just derive the DMA mask from that in the one place we care.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
|
|
These days drivers are not required to fallback to smaller DMA masks,
but can just set the largest mask they support, removing the need for
this trial and error logic.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
|
|
Return the engine type from the function looking at the registers, and
just derive the DMA mask from that in the one place we care.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
|
|
These days drivers are not required to fallback to smaller DMA masks,
but can just set the largest mask they support, removing the need for
this trial and error logic.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
|
|
As the try_encoder_cmd is identical for many drivers, there are now
helpers for this function in the mem2mem core. Use the helper in
allegro.
This fixes the v4l2-compliance test regarding V4L2_ENC_CMD_STOP, because
the allegro-specific function rejected invalid flags.
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
|
|
Not sure how codespell thinks "sroweam" is a real word.
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
|
|
Change devm_k*alloc to k*alloc to manually allocate memory
The manual allocation and freeing of memory is necessary because when
the USB radio is disconnected, the memory associated with devm_k*alloc
is freed. Meaning if we still have unresolved references to the radio
device, then we get use-after-free errors.
This patch fixes this by manually allocating memory, and freeing it in
the v4l2.release callback that gets called when the last radio device
exits.
Reported-and-tested-by: syzbot+a4387f5b6b799f6becbf@syzkaller.appspotmail.com
Signed-off-by: Luke Nowakowski-Krijger <lnowakow@eng.ucsd.edu>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil-cisco@xs4all.nl: cleaned up two small checkpatch.pl warnings]
[hverkuil-cisco@xs4all.nl: prefix subject with driver name]
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
|
