Commit e1a5848e33 ("ARM: 7924/1: mm: don't bother with reserved ttbr0
when running with LPAE") removed the use of the reserved TTBR0 value
for LPAE systems, since the ASID is held in the TTBR and can be updated
atomicly with the pgd of the next mm.
Unfortunately, this patch forgot to update flush_context, which
deliberately avoids marking the local active ASID as allocated, since we
used to switch via ASID zero and didn't need to allocate the ASID of
the previous mm. The side-effect of this is that we can allocate the
same ASID to the next mm and, between flushing the local TLB and updating
TTBR0, we can perform speculative TLB fills for userspace nG mappings
using the page table of the previous mm.
The consequence of this is that the next mm can erroneously hit some
mappings of the previous mm. Note that this was made significantly
harder to hit by a391263cd8 ("ARM: 8203/1: mm: try to re-use old ASID
assignments following a rollover") but is still theoretically possible.
This patch fixes the problem by removing the code from flush_context
that forces the allocated ASID to zero for the local CPU. Many thanks
to the Broadcom guys for tracking this one down.
Fixes: e1a5848e33 ("ARM: 7924/1: mm: don't bother with reserved ttbr0 when running with LPAE")
Cc: <stable@vger.kernel.org> # v3.14+
Reported-by: Raymond Ngun <rngun@broadcom.com>
Tested-by: Raymond Ngun <rngun@broadcom.com>
Reviewed-by: Gregory Fong <gregory.0xf0@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add support for PXA1928 GPIOs. The PXA1928 adds a 6th bank from previous
generations.
Signed-off-by: Jing Xiang <jxiang@marvell.com>
Signed-off-by: Xiangzhan Meng <mengxzh@marvell.com>
[robh: ported to 3.19 from vendor kernel]
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add a new compatible string for PXA1928 GPIO controller. The IP block is
same as prior chips with a 6th bank added.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
In preparation to enable ARCH_MMP on ARM64, the include of mach/irqs.h
must be eliminated. mach/irqs.h was being included for IRQ_GPIO{0,1},
but these IRQs are always passed in as resources now. We can use irq0
and irq1 and get rid of IRQ_GPIOx. Get rid of the ifdef in the process
as it is no longer needed.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cast the struct gpio_chip into a max732x_chip using an inline
macro and move the assignment to the variable declaration
to save lines and simplify things.
Cc: Semen Protsenko <semen.protsenko@globallogic.com>
Acked-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
For TKT238285 hardware issue which may cause txfifo store data twice can only
be caught on i.mx6dl, we use pio mode instead of DMA mode on i.mx6dl.
Fixes: f62caccd12 (spi: spi-imx: add DMA support)
Signed-off-by: Robin Gong <b38343@freescale.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Disables GPIO support and LINE2 input and renames Mic3 input to Mic2,
if tlv320aic3104 mode is seleced. Devicetree binding document is
updated accordingly.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
of_platform_device_create does not exist if OF_ADDRESS is not configured,
so limit its use accordingly.
Without this fix, the sparc64:allmodconfig build fails with
ERROR: "of_platform_device_create" [drivers/ata/libahci_platform.ko] undefined!
Fixes: c7d7ddee7e ("ata: libahci: Allow using multiple regulators")
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
The phy_power_off() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
The pci_dev_put() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
Use the static attribute groups assigned to the device instead of
calling device_create_file() after the device registration.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The of_node_put() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This fixes a bug in the RCU code I added in ist_enter. It also includes
the sysret stuff discussed here:
http://lkml.kernel.org/g/cover.1421453410.git.luto%40amacapital.net
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Merge tag 'pr-20150201-x86-entry' of git://git.kernel.org/pub/scm/linux/kernel/git/luto/linux into x86/asm
Pull "x86: Entry cleanups and a bugfix for 3.20" from Andy Lutomirski:
" This fixes a bug in the RCU code I added in ist_enter. It also includes
the sysret stuff discussed here:
http://lkml.kernel.org/g/cover.1421453410.git.luto%40amacapital.net "
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'v3.19-rc7' into x86/asm, to refresh the branch before pulling in new changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The patch e22b886a8a ("sched/wait: Add might_sleep() checks")
introduced a bug in the raid5 subsystem.
The function raid5_quiesce() (and resize_stripes()) uses the 'cmd'
part to release and acquire a spinlock (so we call the sleep
primitives in atomic context), and therefore we cannot do the
might_sleep() check.
Remove it.
Fixes: e22b886a8a ("sched/wait: Add might_sleep() checks")
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/alpine.LRH.2.02.1502020935580.13510@file01.intranet.prod.int.rdu2.redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
line6_start_timer passes an unsigned int as argument to be used in mod_timer
which is then used by mod_timer as unsigned long, this just fixes up the
argument type. This change helps make static code checkers happy.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This is only an API consolidation and should make things more readable
it replaces var * HZ / 1000 by msecs_to_jiffies(var).
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Currently when a mode is rejected the reason is printed as a raw number.
Having to manually decode that to a enum drm_mode_status value is
tiresome. Have the code do the decoding instead and print the result
in a human readable format.
Just having an array of strings indexed with the mode status doesn't
work since the enum includes negative values. So we offset the status
by +3 which makes all the indexes non-negative. Also add a bit of
paranoia into the code to catch out of bounds accesses in case
someone adds more enum values but forgets to update the code.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The bnep_get_device function may be triggered by an ioctl just after a
connection has gone down. In such a case the respective L2CAP chan->conn
pointer will get set to NULL (by l2cap_chan_del). This patch adds a
missing NULL check for this case in the bnep_get_device() function.
Reported-by: Patrik Flykt <patrik.flykt@linux.intel.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The quota threshold should be reduced to 4 to update the
firmware more frequently.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Remove the function BSP_set_clock_mmss() that is not used anywhere.
This was partially found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Compilation of arch/m68k/68360/commproc.c fails with the following errors:
arch/m68k/68360/commproc.c:75:1: error: function declaration isn’t a prototype
arch/m68k/68360/commproc.c:211:1: error: function declaration isn’t a prototype
arch/m68k/68360/commproc.c: In function ‘cpm_install_handler’:
arch/m68k/68360/commproc.c:214:2: warning: passing argument 2 of ‘request_irq’ from incompatible pointer type
include/linux/interrupt.h:128:1: note: expected ‘irq_handler_t’ but argument is of type ‘void (*)()’
It should be using the proper irq hander type, irq_handler_t. Modify it
to use that.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
There used to be a Kconfig symbol BSEIP. It was PPC specific and was
removed in v2.6.27. So the check for CONFIG_BSEIP can be removed. This
means a few defines will be removed. None of the macros involved are
used, so no one should care.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
After commit e9d8b2c296 (xen-netback:
disable rogue vif in kthread context), a fatal (protocol) error would
leave the guest Rx thread spinning, wasting CPU time. Commit
ecf08d2dbb (xen-netback: reintroduce
guest Rx stall detection) made this even worse by removing a
cond_resched() from this path.
Since a fatal error is non-recoverable, just allow the guest Rx thread
to exit. This requires taking additional refs to the task so the
thread exiting early is handled safely.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reported-by: Julien Grall <julien.grall@linaro.org>
Tested-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit de966c5928 (net/mlx4_core: Support more than 64 VFs) was meant to
allow up to 126 VFs. However, due to leaving MLX4_MFUNC_MAX too low, using
more than 80 VFs resulted in memory corruptions (and Oopses) when more than
80 VFs were requested. In addition, the number of slaves was left too high.
This commit fixes these issues.
Fixes: de966c5928 ("net/mlx4_core: Support more than 64 VFs")
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The bug here is that we use "Reject" as the index into the cau_t[] array
in the else path. Since the cau_t[] has 9 elements if Reject == 9 then
we are reading beyond the end of the array.
My understanding of the code is that it's saying that if Reject is 1 or
too high then that's invalid and we should hang up.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
Netfilter/IPVS fixes for net
The following patchset contains Netfilter/IPVS fixes for your net tree,
they are:
1) Validate hooks for nf_tables NAT expressions, otherwise users can
crash the kernel when using them from the wrong hook. We already
got one user trapped on this when configuring masquerading.
2) Fix a BUG splat in nf_tables with CONFIG_DEBUG_PREEMPT=y. Reported
by Andreas Schultz.
3) Avoid unnecessary reroute of traffic in the local input path
in IPVS that triggers a crash in in xfrm. Reported by Florian
Wiessner and fixes by Julian Anastasov.
4) Fix memory and module refcount leak from the error path of
nf_tables_newchain().
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The kfree() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-By: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladislav Yasevich says:
====================
ipv6: Add lockless UDP send path
This series introduces a lockless UDPv6 send path similar to
what Herbert Xu did for IPv4 a while ago.
There are some difference from IPv4. IPv6 caching for flow
label is a bit different, as well as it requires another cork
cork structure that holds the IPv6 ancillary data.
Please take a look.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Currntly, if we are not doing UFO on the packet, all UDP
packets will start with CHECKSUM_NONE and thus perform full
checksum computations in software even if device support
IPv6 checksum offloading.
Let's start start with CHECKSUM_PARTIAL if the device
supports it and we are sending only a single packet at
or below mtu size.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit adds the same functionaliy to IPv6 that
commit 903ab86d19
Author: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue Mar 1 02:36:48 2011 +0000
udp: Add lockless transmit path
added to IPv4.
UDP transmit path can now run without a socket lock,
thus allowing multiple threads to send to a single socket
more efficiently.
This is only used when corking/MSG_MORE is not used.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Now that we can individually construct IPv6 skbs to send, add a
udpv6_send_skb() function to populate the udp header and send the
skb. This allows udp_v6_push_pending_frames() to re-use this
function as well as enables us to add lockless sendmsg() support.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is very similar to
commit 1c32c5ad6f
Author: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue Mar 1 02:36:47 2011 +0000
inet: Add ip_make_skb and ip_finish_skb
It adds IPv6 version of the helpers ip6_make_skb and ip6_finish_skb.
The job of ip6_make_skb is to collect messages into an ipv6 packet
and poplulate ipv6 eader. The job of ip6_finish_skb is to transmit
the generated skb. Together they replicated the job of
ip6_push_pending_frames() while also provide the capability to be
called independently. This will be needed to add lockless UDP sendmsg
support.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add the ability to append data to arbitrary queue. This
will be needed later to implement lockless UDP sends.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull IPv6 cork initialization into its own function that
can be re-used. IPv6 specific cork data did not have an
explicit data structure. This patch creats eone so that
just ipv6 cork data can be as arguemts. Also, since
IPv6 tries to save the flow label into inet_cork_full
tructure, pass the full cork.
Adjust ip6_cork_release() to take cork data structures.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
"notused" is not necessary. Set 1 to the first entry is enough.
Signed-off-by: Takeuchi Satoru <takeuchi_satoru@jp.fujitsu.com
Cc: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
o removed an unecessary INIT_LIST_HEAD after LIST_HEAD
o merge a declare & INIT_LIST_HEAD pair into one LIST_HEAD
Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
Below test will fail currently:
mkfs.ext4 -F /dev/sda
btrfs-convert /dev/sda
mount /dev/sda /mnt
btrfs device add -f /dev/sdb /mnt
btrfs balance start -v -dconvert=raid1 -mconvert=raid1 /mnt
The reason is there are some block groups with usage 0, but the whole
disk hasn't free space to allocate new chunk, so we even can't set such
block group readonly. This patch deletes the chunk allocation when
setting block group ro. For META, we already have reserve. But for
SYSTEM, we don't have, so the check_system_chunk is still required.
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
Verify that the sys_array has enough bytes to read the next item.
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
There's a pointer to buffer, integer offset and offset passed as
pointer, try to find matching names for them.
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
Verify that possible minimum and maximum size is set, validity of
contents is checked in btrfs_read_sys_array.
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
I received a few crafted images from Jiri, all got through the recently
added superblock checks. The lower bounds checks for num_devices and
sector/node -sizes were missing and caused a crash during mount.
Tools for symbolic code execution were used to prepare the images
contents.
Reported-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
* Add support for IEEE ets & pfc api.
* Fix bug that resulted in incorrect bandwidth percentage being returned for
CEE peers
* Convert pfc enabled info from firmware format to what dcbnl expects before
returning
Signed-off-by: Anish Bhatt <anish@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ARM has 32-byte cache lines, which according to the comment in
the init registers function seems to work best with the default
value of 0x4800 that is also used on sparc and parisc.
This adds ARM to the same list, to use that default but no
longer warn about it.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
