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Add new labels to certain nodes so they could be easily referenced by
Exynos4 board DTS files.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
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Since e4b3d38088df ("phy: exynos-video-mipi: Fix regression by adding
support for PMU regmap") the Exynos PMU driver provides regmap to access
the MIPI DPHY registers. The MIPI DPHY driver accesses this regmap
through syscon phandle.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
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Since e4b3d38088df ("phy: exynos-video-mipi: Fix regression by
adding support for PMU regmap") the Exynos PMU driver provides
regmap to access the MIPI DPHY registers. The MIPI DPHY node uses
a phandle to syscon to get this regmap. The 'reg' field is obsolete.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
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Replace fixed parent with last parent (obtained with clk_get_parent())
of clocks for devices in mfc and disp power domains. This should improve
behavior if such clocks were reparented by the drivers and new parents
are different than those specified in DTS.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
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Odroid-XU3 board support power monitor sensor.
Below is the output of boot log.
[ 3.241438] ina2xx 0-0040: power monitor ina231 (Rshunt = 10000 uOhm)
[ 3.248068] ina2xx 0-0041: power monitor ina231 (Rshunt = 10000 uOhm)
[ 3.254724] ina2xx 0-0044: power monitor ina231 (Rshunt = 10000 uOhm)
[ 3.261354] ina2xx 0-0045: power monitor ina231 (Rshunt = 10000 uOhm)
ina231-i2c-0-40
Adapter: s3c2410-i2c
in0: +0.00 V
in1: +1.01 V
power1: 175.00 mW
curr1: +0.18 A
ina231-i2c-0-41
Adapter: s3c2410-i2c
in0: +0.00 V
in1: +1.21 V
power1: 50.00 mW
curr1: +0.04 A
ina231-i2c-0-44
Adapter: s3c2410-i2c
in0: +0.00 V
in1: +1.02 V
power1: 50.00 mW
curr1: +0.04 A
ina231-i2c-0-45
Adapter: s3c2410-i2c
in0: +0.00 V
in1: +1.04 V
power1: 75.00 mW
curr1: +0.07 A
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
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Enable CONFIG_SENSORS_PWM_FAN on exynos_defconfig to control fan
power on Odroid-XU3.
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
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The Mele A1000G-quad and the Mele M9 have the same PCB, sofar we've been using
the same dts for both models. Unfortunately this does not work for the otg
controller, on the M9 this is routed to a micro-usb connector on the outside,
while as on the A1000G-quad it is connected to an usb to sata bridge
(which is not populated on the M9 pcb).
This commit adds a new dts for the Mele-A1000G-quad to allow using
different otg controller settings on the 2 boards.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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The ga10h is an 10" tablet with an A33 or A23 soc, 1G RAM, 8G or 16G nand,
sdio wifi, 2 micro usb ports, 1 otg and 1 host and 1 micro sd slot.
This commit adds a dts file for the v1.1 pcb with an a33 soc.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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The SinA33 is a core/SDK development board by Sinlinx. The core board
does not have any connectors or pads, other than the pads used to connect
it to the SDK board.
The core board only has the A33 SoC, 2 RAM chips, an eMMC flash chip,
the AXP223 PMIC, and supporting discrete components. eMMC is optional.
The SDK board has a USB host, USB OTG, volume control and home buttons,
audio input/output jacks, a micro-SD slot, camera and SDIO expansion
headers, an LCD connector, and a GPIO expansion header, which has
UARTs, MIPI DSI and I2C available. Only UART0 is enabled though.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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The A33 adds an additional pinmux option for uart0 on the PB pins.
This was not present on the A23. Nor is it available on the H3,
which does not have the PB pingroup.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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mmc2 is mostly used with eMMC flash chips, as an alternative to
raw NAND flash chips. 8 bit mmc is commonly used.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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The SOCrates has three HPS LEDs that can be turned on/off via gpio.
Use the first one has heartbeat and add the other two as free LEDs.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
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Enable the gpio0+1 controller.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
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Add binding doc for Altera SOCFPGA SDRAM controller.
Signed-off-by: Alan Tull <atull@opensource.altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
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Add the enable-method property for the cpu node on socfpga.dtsi and
socfpga_arria10.dtsi. This is for CPU_METHOD_OF_DECLARE to use to enable
the secondary core.
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
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Add a dts node for the A9 SCU on the Arria10 platform.
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux
Pull ia64 fix from Tony Luck:
"Fix some build warnings for ia64 - cpu_callin_map doesn't need to be
volatile"
* tag 'please-pull-rusty' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
ia64: make cpu_callin_map non-volatile.
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Acer Aspire 9420 with ALC883 (1025:0107) needs the fixup for EAPD to
make the sound working like other Aspire models.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=94111
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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known rate
Make the check to skip the rate check more lax, so that it applies
to all hw_version 4 models.
This fixes the touchpad not being detected properly on Asus PU551LA
laptops.
Cc: stable@vger.kernel.org
Reported-and-tested-by: David Zafra Gómez <dezeta@klo.es>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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We used to read file_handle twice. Once to get the amount of extra
bytes, and once to fetch the entire structure.
This may be problematic since we do size verifications only after the
first read, so if the number of extra bytes changes in userspace between
the first and second calls, we'll have an incoherent view of
file_handle.
Instead, read the constant size once, and copy that over to the final
structure without having to re-read it again.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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If the specified maximum length of the string is a multiple of unsigned
long, we would load one long behind the specified maximum. If that
happens to be in a next page, we can hit a page fault although we were
not expected to.
Fix the off-by-one bug in the test whether we are at the end of the
specified range.
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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cpumask_test_cpu() doesn't take volatile, unlike the obsoleted
cpu_isset. The only place ia64 really cares is the spin waiting for a
bit; udelay() is probably a barrier but insert barrier() to be sure.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Some of the OMAP based boards e.g. am437x-gp-evm have
the Pixcir touch controller. Enable the related device
driver.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v4.2/soc
ARM: OMAP2+: hwmod code and data changes for v4.2
Several OMAP2+ hwmod changes for v4.2. One patch cleans up a nasty
interaction between the OMAP GPMC and the hwmod code when debugging is
enabled. IP block integration data has been added for the AM43xx EMIF
RAM controller. There's also a fix for the omap-aes driver when used in
QEMU. And finally, some changes to the OMAP3 hwmod code to support the
use of the security IP blocks (AES and SHA) on GP devices, or when they've
specifically been enabled in the DT data.
Basic build, boot, and power management test results are here:
http://www.pwsan.com/omap/testlogs/omap-hwmod-a-for-v4.2/20150601192349/
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The memory setup log is missing a new line.
Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9771/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The vd->node is removed from the lists when the transfer started so the
vchan_get_all_descriptors() will not find it. This results memory leak.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
[andy: fix the typo to prevent a compilation error]
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Add an usb_clk node for a23/a33.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
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ET-Q8_A33 is A33 based cheap tablet in common Q8 format.
It has 512MB RAM, 4GB Nand, 7" Display, RDA5900P wifi, GSL1680 touch, etc.
Signed-off-by: Vishnu Patekar <vishnupatekar0510@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tested-by: Chen-Yu Tsai <wens@csie.org>
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Add a dtsi file for use with a33 based boards based on the new
sun8i-a23-a33.dtsi file.
Signed-off-by: Vishnu Patekar <vishnupatekar0510@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tested-by: Chen-Yu Tsai <wens@csie.org>
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Rename sun8i-a23.dtsi to sun8i-a23-a33.dtsi as the base dtsi for the A33
is 99% the same and add a new sun8i-a23.dtsi including sun8i-a23-a33.dtsi
and setting the few things not shared with the A33 (mbus-clk, pio
compatible and interrupts).
Signed-off-by: Vishnu Patekar <vishnupatekar0510@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tested-by: Chen-Yu Tsai <wens@csie.org>
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The early_idt_handlers asm code generates an array of entry
points spaced nine bytes apart. It's not really clear from that
code or from the places that reference it what's going on, and
the code only works in the first place because GAS never
generates two-byte JMP instructions when jumping to global
labels.
Clean up the code to generate the correct array stride (member size)
explicitly. This should be considerably more robust against
screw-ups, as GAS will warn if a .fill directive has a negative
count. Using '. =' to advance would have been even more robust
(it would generate an actual error if it tried to move
backwards), but it would pad with nulls, confusing anyone who
tries to disassemble the code. The new scheme should be much
clearer to future readers.
While we're at it, improve the comments and rename the array and
common code.
Binutils may start relaxing jumps to non-weak labels. If so,
this change will fix our build, and we may need to backport this
change.
Before, on x86_64:
0000000000000000 <early_idt_handlers>:
0: 6a 00 pushq $0x0
2: 6a 00 pushq $0x0
4: e9 00 00 00 00 jmpq 9 <early_idt_handlers+0x9>
5: R_X86_64_PC32 early_idt_handler-0x4
...
48: 66 90 xchg %ax,%ax
4a: 6a 08 pushq $0x8
4c: e9 00 00 00 00 jmpq 51 <early_idt_handlers+0x51>
4d: R_X86_64_PC32 early_idt_handler-0x4
...
117: 6a 00 pushq $0x0
119: 6a 1f pushq $0x1f
11b: e9 00 00 00 00 jmpq 120 <early_idt_handler>
11c: R_X86_64_PC32 early_idt_handler-0x4
After:
0000000000000000 <early_idt_handler_array>:
0: 6a 00 pushq $0x0
2: 6a 00 pushq $0x0
4: e9 14 01 00 00 jmpq 11d <early_idt_handler_common>
...
48: 6a 08 pushq $0x8
4a: e9 d1 00 00 00 jmpq 120 <early_idt_handler_common>
4f: cc int3
50: cc int3
...
117: 6a 00 pushq $0x0
119: 6a 1f pushq $0x1f
11b: eb 03 jmp 120 <early_idt_handler_common>
11d: cc int3
11e: cc int3
11f: cc int3
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Binutils <binutils@sourceware.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H.J. Lu <hjl.tools@gmail.com>
Cc: Jan Beulich <JBeulich@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/ac027962af343b0c599cbfcf50b945ad2ef3d7a8.1432336324.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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This reverts commit 5fc872c7323534e8f7dc21bab635e7a9b9659e07.
The DMA-API does not strictly require that the memory
returned by dma_alloc_coherent is zeroed out. For that
another function (dma_zalloc_coherent) should be used. But
all other x86 DMA-API implementation I checked zero out the
memory, so that some drivers rely on it and break when it is
not.
It seems the (driver-)world is not yet ready for this
change, so revert it.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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Pull networking fixes from David Miller:
1) Various VTI tunnel (mark handling, PMTU) bug fixes from Alexander
Duyck and Steffen Klassert.
2) Revert ethtool PHY query change, it wasn't correct. The PHY address
selected by the driver running the PHY to MAC connection decides
what PHY address GET ethtool operations return information from.
3) Fix handling of sequence number bits for encryption IV generation in
ESP driver, from Herbert Xu.
4) UDP can return -EAGAIN when we hit a bad checksum on receive, even
when there are other packets in the receive queue which is wrong.
Just respect the error returned from the generic socket recv
datagram helper. From Eric Dumazet.
5) Fix BNA driver firmware loading on big-endian systems, from Ivan
Vecera.
6) Fix regression in that we were inheriting the congestion control of
the listening socket for new connections, the intended behavior
always was to use the default in this case. From Neal Cardwell.
7) Fix NULL deref in brcmfmac driver, from Arend van Spriel.
8) OTP parsing fix in iwlwifi from Liad Kaufman.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (26 commits)
vti6: Add pmtu handling to vti6_xmit.
Revert "net: core: 'ethtool' issue with querying phy settings"
bnx2x: Move statistics implementation into semaphores
xen: netback: read hotplug script once at start of day.
xen: netback: fix printf format string warning
Revert "netfilter: ensure number of counters is >0 in do_replace()"
net: dsa: Properly propagate errors from dsa_switch_setup_one
tcp: fix child sockets to use system default congestion control if not set
udp: fix behavior of wrong checksums
sfc: free multiple Rx buffers when required
bna: fix soft lock-up during firmware initialization failure
bna: remove unreasonable iocpf timer start
bna: fix firmware loading on big-endian machines
bridge: fix br_multicast_query_expired() bug
via-rhine: Resigning as maintainer
brcmfmac: avoid null pointer access when brcmf_msgbuf_get_pktid() fails
mac80211: Fix mac80211.h docbook comments
iwlwifi: nvm: fix otp parsing in 8000 hw family
iwlwifi: pcie: fix tracking of cmd_in_flight
ip_vti/ip6_vti: Preserve skb->mark after rcv_cb call
...
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Pull Sparc fixes from David Miller:
1) Setup the core/threads/sockets bitmaps correctly so that 'lscpus'
and friends operate properly. Frtom Chris Hyser.
2) The bit that normally means "Cached Virtually" on sun4v systems,
actually changes meaning in M7 and later chips. Fix from Khalid
Aziz.
3) One some PCI-E systems we need to probe different OF properties to
fill in the PCI slot information properly, from Eric Snowberg.
4) Kill an extraneous memset after kzalloc(), from Christophe Jaillet.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc: Resolve conflict between sparc v9 and M7 on usage of bit 9 of TTE
sparc64: pci slots information is not populated in sysfs
sparc: kernel: GRPCI2: Remove a useless memset
sparc64: Setup sysfs to mark LDOM sockets, cores and threads correctly
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Using the DCE2 one by accident afer the audio rework.
Bug:
https://bugs.freedesktop.org/show_bug.cgi?id=90777
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Pull virtio fix from Michael Tsirkin:
"Last-minute virtio fix for 4.1
This tweaks an exported user-space header to fix build breakage for
userspace using it"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
include/uapi/linux/virtio_balloon.h: include linux/virtio_types.h
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Register crypto hwmod links only if they are not disabled in DT.
If DT information is missing, enable them only for GP devices.
Before this patch crypto hwmod links were always disabled for all HS
devices and it was not possible to use omap-aes and omap-sham linux
drivers.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
[paul@pwsan.com: move the complex IP-block presence heuristics into their
own function to simplify the code; fix some checkpatch warnings]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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Without this patch function pm_runtime_get_sync() returns 0 even when
some omap subfunction fails. This patch properly propagate error codes
from omap functions back to caller.
This patch fix problem, when loading omap-aes driver in qemu cause
kernel oops.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
[paul@pwsan.com: fix a checkpatch warning]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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Without a hwmod for am43xx emif use counting for emif clockdomain does
not happen correctly so it may be shut off by pm code unintentionally.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
[paul@pwsan.com: updated to apply]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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We support decoding the bootloader values if DEBUG is defined.
But we also need to change the struct omap_hwmod flags to have
HWMOD_INIT_NO_RESET to avoid the GPMC being reset during the
boot. Otherwise just the default timings will be displayed
instead of the bootloader configured timings.
This also allows us to clean up the various GPMC related
hwmod flags. For debugging, we only need HWMOD_INIT_NO_RESET,
and HWMOD_INIT_NO_IDLE is not needed.
Cc: Brian Hutchinson <b.hutchman@gmail.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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Pablo Neira Ayuso says:
====================
Netfilter fix for net
The following patch reverts the ebtables chunk that enforces counters that was
introduced in the recently applied d26e2c9ffa38 ('Revert "netfilter: ensure
number of counters is >0 in do_replace()"') since this breaks ebtables.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
iwlwifi:
* fix OTP parsing 8260
* fix powersave handling for 8260
brcmfmac:
* fix null pointer crash
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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We currently rely on the PMTU discovery of xfrm.
However if a packet is localy sent, the PMTU mechanism
of xfrm tries to to local socket notification what
might not work for applications like ping that don't
check for this. So add pmtu handling to vti6_xmit to
report MTU changes immediately.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In d74b9027a4da ("PCI: Consider additional PF's IOV BAR alignment in sizing
and assigning"), we store additional alignment in realloc_head and take
this into consideration for assignment.
In __assign_resources_sorted(), we changed dev_res->res->start, then used
resource_start() (which depends on res->start), so the recomputed res->end
was completely bogus. Even if we'd had the correct size, the end would
have been off by one.
Preserve the resource size when we adjust its alignment.
[bhelgaas: changelog]
Fixes: d74b9027a4da ("PCI: Consider additional PF's IOV BAR alignment in sizing and assigning")
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Wei Yang <weiyang@linux.vnet.ibm.com>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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This reverts commit f96dee13b8e10f00840124255bed1d8b4c6afd6f.
It isn't right, ethtool is meant to manage one PHY instance
per netdevice at a time, and this is selected by the SET
command. Therefore by definition the GET command must only
return the settings for the configured and selected PHY.
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Avoid entering "RTC-only mode" at poweroff. It is unsupported by most
versions of BeagleBone, and risks hardware damage.
The damaging configuration is having system-power-controller
without ti,pmic-shutdown-controller.
Reported-by: Matthijs van Duin <matthijsvanduin@gmail.com>
Tested-by: Matthijs van Duin <matthijsvanduin@gmail.com>
Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Johan Hovold <johan@kernel.org>
[Matthijs van Duin: added explanatory comments]
Signed-off-by: Matthijs van Duin <matthijsvanduin@gmail.com>
Fixes: http://bugs.elinux.org/issues/143
Cc: stable@vger.kernel.org # v3.12+
[tony@atomide.com: updated comments with the hardware breaking info]
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Commit dff173de84958 ("bnx2x: Fix statistics locking scheme") changed the
bnx2x locking around statistics state into using a mutex - but the lock
is being accessed via a timer which is forbidden.
[If compiled with CONFIG_DEBUG_MUTEXES, logs show a warning about
accessing the mutex in interrupt context]
This moves the implementation into using a semaphore [with size '1']
instead.
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When we come to tear things down in netback_remove() and generate the
uevent it is possible that the xenstore directory has already been
removed (details below).
In such cases netback_uevent() won't be able to read the hotplug
script and will write a xenstore error node.
A recent change to the hypervisor exposed this race such that we now
sometimes lose it (where apparently we didn't ever before).
Instead read the hotplug script configuration during setup and use it
for the lifetime of the backend device.
The apparently more obvious fix of moving the transition to
state=Closed in netback_remove() to after the uevent does not work
because it is possible that we are already in state=Closed (in
reaction to the guest having disconnected as it shutdown). Being
already in Closed means the toolstack is at liberty to start tearing
down the xenstore directories. In principal it might be possible to
arrange to unregister the device sooner (e.g on transition to Closing)
such that xenstore would still be there but this state machine is
fragile and prone to anger...
A modern Xen system only relies on the hotplug uevent for driver
domains, when the backend is in the same domain as the toolstack it
will run the necessary setup/teardown directly in the correct sequence
wrt xenstore changes.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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drivers/net/xen-netback/netback.c: In function ‘xenvif_tx_build_gops’:
drivers/net/xen-netback/netback.c:1253:8: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 5 has type ‘int’ [-Wformat=]
(txreq.offset&~PAGE_MASK) + txreq.size);
^
PAGE_MASK's type can vary by arch, so a cast is needed.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
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v2: Cast to unsigned long, since PAGE_MASK can vary by arch.
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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