| Commit message (Collapse) | Author | Age | Files | Lines |
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virt_to_phys on s390 currently uses the LRA instruction to translate
virtual to physical addresses. This creates an unnecessary overhead
and caused trouble with dma debugging code (when called with an
address pointing to a already unmapped page).
Just get rid of s390's implementation and use the one from
asm-generic/io.h .
Note: with this change virt_to_phys will no longer work on vmalloc'ed
addresses.
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Since 9a46ad6d6 "smp: make smp_call_function_many() use logic similar
to smp_call_function_single()" generic_smp_call_function_interrupt()
is only an alias to generic_smp_call_function_single_interrupt().
So remove the superfluous variant.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Remove the unused function qdio_trace_aob.
Acked-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Use the to_pci_dev macro to fetch a pci_dev from a struct device
pointer.
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"A couple of last-minute fixes: a build regression for !SMP, a recent
memory detection patch caused kdump to break, a regression in regard
to sscanf vs reboot from FCP, and two fixes in the DMA mapping code
for PCI"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/ipl: Fix FCP WWPN and LUN format strings for read
s390/mem_detect: fix memory hole handling
s390/dma: support debug_dma_mapping_error
s390/dma: fix mapping_error detection
s390/irq: Only define synchronize_irq() on SMP
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The following git commit changed the behavior of sscanf:
commit 53809751ac230a3611b5cdd375f3389f3207d471
Author: Jan Beulich <JBeulich@suse.com>
Date: Mon Dec 17 16:01:31 2012 -0800
sscanf: don't ignore field widths for numeric conversions
This broke the WWPN and LUN sysfs attributes for s390 reipl and dump
on panic.
Example:
$ echo 0x0123456701234567 > /sys/firmware/reipl/fcp/wwpn
$ cat /sys/firmware/reipl/fcp/wwpn
0x0001234567012345
So fix this and use format strings that work also with the
new sscanf implementation:
$ echo 0x012345670123456789 > /sys/firmware/reipl/fcp/wwpn
$ cat /sys/firmware/reipl/fcp/wwpn
0x0123456701234567
Cc: stable@vger.kernel.org # 3.8+
Reviewed-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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With git commit 996b4a7d "s390/mem_detect: remove artificial kdump
memory types" the memory detection code got simplified.
As a side effect the array that describes memory chunks may now
contain empty (zeroed) entries.
All call sites can handle this except for
drivers/s390/char/zcore.c::zcore_memmap_open
which has a really odd user space interface. The easiest fix is to
change the memory hole handling code, so that no empty entries exist
before the last valid entry is reached.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Without this patch drivers will get blamed (CONFIG_DMA_API_DEBUG=y)
for not calling dma_mapping_error (even if they do).
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The map_page implementation of s390 returns DMA_ERROR_CODE in an error
situation. Correctly test if a mapping was erroneous (DMA_ERROR_CODE is
defined as ~0).
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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In uniprocessor configurations, synchronize_irq() is defined in
<linux/hardirq.h> as a macro, and this function definition fails to
compile.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: stable@vger.kernel.org # 3.9
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc bugfix from Ben Herrenschmidt:
"This is a fix for a regression causing a freescale "83xx" based
platforms to crash on boot due to some PCI breakage"
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/pci: Fix boot panic on mpc83xx (regression)
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The following commit caused a fatal oops when booting on mpc83xx with
a non-express PCI bus (regardless of whether a PCI device is present):
commit 50d8f87d2b39313dae9d0a2d9b23d377328f2f7b
Author: Rojhalat Ibrahim <imr@rtschenk.de>
Date: Mon Apr 8 10:15:28 2013 +0200
powerpc/fsl-pci Make PCIe hotplug work with Freescale PCIe controllers
Up to now the PCIe link status on Freescale PCIe controllers was only
checked once at boot time. So hotplug did not work. With this patch the
link status is checked on every config read. PCIe devices not present at
boot time are found after doing 'echo 1 >/sys/bus/pci/rescan'.
Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This patch fixes the issue by calling setup_indirect_pci for all device types.
fsl_indirect_read_config is now only used for booke/86xx PCIe controllers.
Reported-by: Michael Guntsche <mike@it-loops.com>
Cc: Scott Wood <scottwood@freescale.com>
Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de>
Signed-off-by: Scott Wood <scottwood@freescale.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse bugfix from Miklos Szeredi:
"This fixes a race between fallocate() and truncate()"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: hold i_mutex in fuse_file_fallocate()
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Changing size of a file on server and local update (fuse_write_update_size)
should be always protected by inode->i_mutex. Otherwise a race like this is
possible:
1. Process 'A' calls fallocate(2) to extend file (~FALLOC_FL_KEEP_SIZE).
fuse_file_fallocate() sends FUSE_FALLOCATE request to the server.
2. Process 'B' calls ftruncate(2) shrinking the file. fuse_do_setattr()
sends shrinking FUSE_SETATTR request to the server and updates local i_size
by i_size_write(inode, outarg.attr.size).
3. Process 'A' resumes execution of fuse_file_fallocate() and calls
fuse_write_update_size(inode, offset + length). But 'offset + length' was
obsoleted by ftruncate from previous step.
Changed in v2 (thanks Brian and Anand for suggestions):
- made relation between mutex_lock() and fuse_set_nowrite(inode) more
explicit and clear.
- updated patch description to use ftruncate(2) in example
Signed-off-by: Maxim V. Patlasov <MPatlasov@parallels.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"A few last minute SPI updates: fix a missized allocation and use
atomic allocations in atomic context in the PXA driver, and fix the
checking of return codes in the S3C64xx driver which caused spurious
errors under heavy load."
* tag 'spi-v3.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi/pxa2xx: fix memory corruption due to wrong size used in devm_kzalloc()
spi/pxa2xx: use GFP_ATOMIC in sg table allocation
spi: s3c64xx: Fix pm_runtime_get_sync() return value check
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If the device is already in a runtime PM enabled state
pm_runtime_get_sync() will return 1, so a test for negative
value should be used to check for errors.
Without this patch there are seen errors like:
[ 8.540000] s3c64xx-spi 13930000.spi: Failed to enable device: 1
[ 8.545000] spi_master spi1: failed to prepare transfer hardware
Likely because the driver uses synchronous API to runtime enable
the device and asynchronous one to disable it.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mark Brown <broonielinaro.org>
Cc: stable@vger.kernel.org
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ACPI part of the driver accidentally used sizeof(*ssp) instead of the
correct sizeof(*pdata). This leads to nasty memory corruptions like the one
below:
BUG: unable to handle kernel paging request at 0000000749fd30b8
IP: [<ffffffff813fe8a1>] __list_del_entry+0x31/0xd0
PGD 0
Oops: 0000 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 30 Comm: kworker/0:1 Not tainted 3.10.0-rc6v3.10-rc6_sdhci_modprobe+ #443
task: ffff8801483a0940 ti: ffff88014839e000 task.ti: ffff88014839e000
RIP: 0010:[<ffffffff813fe8a1>] [<ffffffff813fe8a1>] __list_del_entry+0x31/0xd0
RSP: 0000:ffff88014839fde8 EFLAGS: 00010046
RAX: ffff880149fd30b0 RBX: ffff880149fd3040 RCX: dead000000200200
RDX: 0000000749fd30b0 RSI: ffff880149fd3058 RDI: ffff88014834d640
RBP: ffff88014839fde8 R08: ffff88014834d640 R09: 0000000000000001
R10: ffff8801483a0940 R11: 0000000000000001 R12: ffff880149fd3040
R13: ffffffff810e0b30 R14: ffff8801483a0940 R15: ffff88014834d640
FS: 0000000000000000(0000) GS:ffff880149e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000168 CR3: 0000000001e0b000 CR4: 00000000001407f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Stack:
ffff88014839fe48 ffffffff810e0baf ffffffff81120abd ffff88014839fe20
ffff8801483a0940 ffff8801483a0940 ffff8801483a0940 ffff8801486b1c90
ffff88014834d640 ffffffff810e0b30 0000000000000000 0000000000000000
Call Trace:
[<ffffffff810e0baf>] worker_thread+0x7f/0x390
[<ffffffff81120abd>] ? trace_hardirqs_on+0xd/0x10
[<ffffffff810e0b30>] ? manage_workers.isra.22+0x2b0/0x2b0
[<ffffffff810e6c09>] kthread+0xd9/0xe0
[<ffffffff810f93df>] ? local_clock+0x3f/0x50
[<ffffffff810e6b30>] ? kthread_create_on_node+0x110/0x110
[<ffffffff818c5dec>] ret_from_fork+0x7c/0xb0
[<ffffffff810e6b30>] ? kthread_create_on_node+0x110/0x110
Fix this by using the right structure size in devm_kzalloc().
Reported-by: Jerome Blin <jerome.blin@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: stable@vger.kernel.org # 3.9+
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pxa2xx_spi_map_dma_buffer() gets called in tasklet context so we can't
sleep when we allocate a new sg table. Use GFP_ATOMIC here instead.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: stable@vger.kernel.org
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Fix new kernel-doc warning in fs/splice.c:
Warning(fs/splice.c:1298): No description found for parameter 'opos'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input subsystem updates from Dmitry Torokhov:
"A few small fixups for cyttsp, wacom and xpad drivers"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: xpad - fix for "Mad Catz Street Fighter IV FightPad" controllers
Input: wacom - add a new stylus (0x100802) for Intuos5 and Cintiqs
Input: add missing dependencies on CONFIG_HAS_IOMEM
Input: cyttsp - fix swapped mfg_stat and mfg_cmd registers
Input: cyttsp - add missing handshake
Input: cyttsp - fix memcpy size param
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Added MAP_TRIGGERS_TO_BUTTONS for Mad Catz Street Fighter IV FightPad
device. This controller model was already supported by the xpad
driver, but none of the buttons work correctly without this change.
Tested on kernel version 3.9.5.
Signed-off-by: Shawn Joseph <jms.576@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Several drivers don't build on s390 with CONFIG_PCI disabled as
they require MMIO functions.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: stable@vger.kernel.org # 3.9
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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The command and status register in the driver were swapped with
respect to the order specified in the datasheet (CY8CTMA140).
Confirmed with Cypress that the order in the datasheet is correct.
Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Acked-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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For the devices that has blocking with timeout communication, these
extra handshakes will prevent one timeout delay in startup sequence
Tested-by: Ferruh Yigit <fery@cypress.com> on TMA300-DVK
Signed-off-by: Ferruh Yigit <fery@cypress.com>
Acked-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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memcpy param is wrong because of offset in bl_cmd, this may corrupt the
stack which may cause a crash.
Tested-by: Ferruh Yigit <fery@cypress.com> on TMA300-DVK
Signed-off-by: Ferruh Yigit <fery@cypress.com>
Acked-by: Javier Martinez Canillas <javier@dowhile0.org>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"These are two fixes that came in this week, one for a regression we
introduced in 3.10 in the GIC interrupt code, and the other one fixes
a typo in newly introduced code"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
irqchip: gic: call gic_cpu_init() as well in CPU_STARTING_FROZEN case
ARM: dts: Correct the base address of pinctrl_3 on Exynos5250
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Commit c011470 (irqchip: gic: Perform the gic_secondary_init() call via
CPU notifier) moves gic_secondary_init() that used to be called in
.smp_secondary_init hook into a notifier call. But it changes the
system behavior a little bit. Before the commit, gic_cpu_init()
is called not only when kernel brings up the secondary cores but also
when system resuming procedure hot-plugs the cores back to kernel.
While after the commit, the function will not be called in the latter
case, where the 'action' will not be CPU_STARTING but
CPU_STARTING_FROZEN. This behavior difference at least causes the
following suspend/resume regression on imx6q.
$ echo mem > /sys/power/state
PM: Syncing filesystems ... done.
PM: Preparing system for mem sleep
mmc1: card e624 removed
Freezing user space processes ... (elapsed 0.01 seconds) done.
Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
PM: Entering mem sleep
PM: suspend of devices complete after 5.930 msecs
PM: suspend devices took 0.010 seconds
PM: late suspend of devices complete after 0.343 msecs
PM: noirq suspend of devices complete after 0.828 msecs
Disabling non-boot CPUs ...
CPU1: shutdown
CPU2: shutdown
CPU3: shutdown
Enabling non-boot CPUs ...
CPU1: Booted secondary processor
INFO: rcu_sched detected stalls on CPUs/tasks: { 1 2 3} (detected by 0, t=2102 jiffies, g=4294967169, c=4294967168, q=17)
Task dump for CPU 1:
swapper/1 R running 0 0 1 0x00000000
Backtrace:
[<bf895ff4>] (0xbf895ff4) from [<00000000>] ( (null))
Backtrace aborted due to bad frame pointer <8007ccdc>
Task dump for CPU 2:
swapper/2 R running 0 0 1 0x00000000
Backtrace:
[<8075dbdc>] (0x8075dbdc) from [<00000000>] ( (null))
Backtrace aborted due to bad frame pointer <00000002>
Task dump for CPU 3:
swapper/3 R running 0 0 1 0x00000000
Backtrace:
[<8075dbdc>] (0x8075dbdc) from [<00000000>] ( (null))
Fix the regression by checking 'action' being CPU_STARTING_FROZEN to
have gic_cpu_init() called for secondary cores when system resumes.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This patch corrects the base address of pinctrl_3 on Exynos5250
platform.
Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fix from Greg Kroah-Hartman:
"Here's a single patch for the firmware core that resolves a reported
oops in the firmware core that people have been hitting."
* tag 'driver-core-3.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
firmware loader: fix use-after-free by double abort
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fw_priv->buf is accessed in both request_firmware_load() and
writing to sysfs file of 'loading' context, but not protected
by 'fw_lock' entirely. The patch makes sure that access on
'fw_priv->buf' is protected by the lock.
So fixes the double abort problem reported by nirinA raseliarison:
http://lkml.org/lkml/2013/6/14/188
Reported-and-tested-by: nirinA raseliarison <nirina.raseliarison@gmail.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable <stable@vger.kernel.org> # 3.9
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg Kroah-Hartman:
"Here are two USB patches for 3.10.
One updates the Kconfig wording for CONFIG_USB_PHY to make it,
hopefully, more obvious what this option is (I know you complained
about this when it hit the tree.) The other is a new device id for a
driver"
* tag 'usb-3.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: serial: ti_usb_3410_5052: new device id for Abbot strip port cable
usb: phy: Improve Kconfig help for CONFIG_USB_PHY
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Add product id for Abbott strip port cable for Precision meter which
uses the TI 3410 chip.
Signed-off-by: Anders Hammarquist <iko@iko.pp.se>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The previous text confused users by not describing the very common
(e.g. x86 PC) sitations where no PHY driver is necessary.
Signed-off-by: George Spelvin <linux@horizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pul tty fixes from Greg Kroah-Hartman:
"Here are two tty core fixes that resolve some regressions that have
been reported recently. Both tiny fixes, but needed"
* tag 'tty-3.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: Fix transient pty write() EIO
tty/vt: Return EBUSY if deallocating VT1 and it is busy
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Commit 699390354da6c258b65bf8fa79cfd5feaede50b6
('pty: Ignore slave pty close() if never successfully opened')
introduced a bug with ptys whereby a write() in parallel with an
open() on an existing pty could mistakenly indicate an I/O error.
Only indicate an I/O error if the condition on open() actually exists.
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Tested-by: Mikael Pettersson <mikpe@it.uu.se>
Cc: stable <stable@vger.kernel.org> # 3.9
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit 421b40a6286e ("tty/vt: Fix vc_deallocate() lock order") changed
the behavior when deallocating VT 1. Previously if trying to
deallocate VT1 and it is busy, we would return EBUSY. The commit
changed this to return 0 (success).
This commit restores the old behavior.
Signed-off-by: Ross Lagerwall <rosslagerwall@gmail.com>
Tested-by: Mikael Pettersson <mikpe@it.uu.se>
Acked-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull SCSI target fixes from Nicholas Bellinger:
"Included is the recent tcm_qla2xxx residual underrun length fix from
Roland, along with Joern's iscsi-target patch for session_lock
breakage within iscsit_stop_time2retain_timer() code. Both are CC'ed
to stable.
The remaining two are specific to recent iscsi-target + iser
conversion changes. One drops some left-over debug noise, and Andy's
patch fixes configfs attribute handling during an explicit network
portal feature bit disable when iser-target is unsupported."
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
iscsi-target: Remove left over v3.10-rc debug printks
target/iscsi: Fix op=disable + error handling cases in np_store_iser
tcm_qla2xxx: Fix residual for underrun commands that fail
target/iscsi: don't corrupt bh_count in iscsit_stop_time2retain_timer()
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Reported-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Writing 0 when iser was not previously enabled, so succeed but do
nothing so that user-space code doesn't need a try: catch block
when ib_isert logic is not available.
Also, return actual error from add_network_portal using PTR_ERR
during op=enable failure.
Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Suppose an initiator sends a DATA IN command with an allocation length
shorter than the FC transfer length -- we get a target message like
TARGET_CORE[qla2xxx]: Expected Transfer Length: 256 does not match SCSI CDB Length: 0 for SAM Opcode: 0x12
In that case, the target core adjusts the data_length and sets
se_cmd->residual_count for the underrun. But now suppose that command
fails and we end up in tcm_qla2xxx_queue_status() -- that function
unconditionally overwrites residual_count with the already adjusted
data_length, and the initiator will burp with a message like
qla2xxx [0000:00:06.0]-301d:0: Dropped frame(s) detected (0x100 of 0x100 bytes).
Fix this by adding on to the existing underflow residual count instead.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Cc: Chad Dupuis <chad.dupuis@qlogic.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Here is a fun one. Bug seems to have been introduced by commit 140854cb,
almost two years ago. I have no idea why we only started seeing it now,
but we did.
Rough callgraph:
core_tpg_set_initiator_node_queue_depth()
`-> spin_lock_irqsave(&tpg->session_lock, flags);
`-> lio_tpg_shutdown_session()
`-> iscsit_stop_time2retain_timer()
`-> spin_unlock_bh(&se_tpg->session_lock);
`-> spin_lock_bh(&se_tpg->session_lock);
`-> spin_unlock_irqrestore(&tpg->session_lock, flags);
core_tpg_set_initiator_node_queue_depth() used to call spin_lock_bh(),
but 140854cb changed that to spin_lock_irqsave(). However,
lio_tpg_shutdown_session() still claims to be called with spin_lock_bh()
held, as does iscsit_stop_time2retain_timer():
* Called with spin_lock_bh(&struct se_portal_group->session_lock) held
Stale documentation is mostly annoying, but in this case the dropping
the lock with the _bh variant is plain wrong. It is also wrong to drop
locks two functions below the lock-holder, but I will ignore that bit
for now.
After some more locking and unlocking we eventually hit this backtrace:
------------[ cut here ]------------
WARNING: at kernel/softirq.c:159 local_bh_enable_ip+0xe8/0x100()
Pid: 24645, comm: lio_helper.py Tainted: G O 3.6.11+
Call Trace:
[<ffffffff8103e5ff>] warn_slowpath_common+0x7f/0xc0
[<ffffffffa040ae37>] ? iscsit_inc_conn_usage_count+0x37/0x50 [iscsi_target_mod]
[<ffffffff8103e65a>] warn_slowpath_null+0x1a/0x20
[<ffffffff810472f8>] local_bh_enable_ip+0xe8/0x100
[<ffffffff815b8365>] _raw_spin_unlock_bh+0x15/0x20
[<ffffffffa040ae37>] iscsit_inc_conn_usage_count+0x37/0x50 [iscsi_target_mod]
[<ffffffffa041149a>] iscsit_stop_session+0xfa/0x1c0 [iscsi_target_mod]
[<ffffffffa0417fab>] lio_tpg_shutdown_session+0x7b/0x90 [iscsi_target_mod]
[<ffffffffa033ede4>] core_tpg_set_initiator_node_queue_depth+0xe4/0x290 [target_core_mod]
[<ffffffffa0409032>] iscsit_tpg_set_initiator_node_queue_depth+0x12/0x20 [iscsi_target_mod]
[<ffffffffa0415c29>] lio_target_nacl_store_cmdsn_depth+0xa9/0x180 [iscsi_target_mod]
[<ffffffffa0331b49>] target_fabric_nacl_base_attr_store+0x39/0x40 [target_core_mod]
[<ffffffff811b857d>] configfs_write_file+0xbd/0x120
[<ffffffff81148f36>] vfs_write+0xc6/0x180
[<ffffffff81149251>] sys_write+0x51/0x90
[<ffffffff815c0969>] system_call_fastpath+0x16/0x1b
---[ end trace 3747632b9b164652 ]---
As a pure band-aid, this patch drops the _bh.
Signed-off-by: Joern Engel <joern@logfs.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
"Another set of fixes for Kernel 3.10.
This series contain:
- two Kbuild fixes for randconfig
- a buffer overflow when using rtl28xuu with r820t tuner
- one clk fixup on exynos4-is driver"
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] Fix build when drivers are builtin and frontend modules
[media] s5p makefiles: don't override other selections on obj-[ym]
[media] exynos4-is: Fix FIMC-IS clocks initialization
[media] rtl28xxu: fix buffer overflow when probing Rafael Micro r820t tuner
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There are a large number of reports that the media build is
not compiling when some drivers are compiled as builtin, while
the needed frontends are compiled as module.
On the last one of such reports:
From: kbuild test robot <fengguang.wu@intel.com>
Subject: saa7134-dvb.c:undefined reference to `zl10039_attach'
The .config file has:
CONFIG_VIDEO_SAA7134=y
CONFIG_VIDEO_SAA7134_DVB=y
# CONFIG_MEDIA_ATTACH is not set
CONFIG_DVB_ZL10039=m
And it produces all those errors:
drivers/built-in.o: In function `set_type':
tuner-core.c:(.text+0x2f263e): undefined reference to `tea5767_attach'
tuner-core.c:(.text+0x2f273e): undefined reference to `tda9887_attach'
drivers/built-in.o: In function `tuner_probe':
tuner-core.c:(.text+0x2f2d20): undefined reference to `tea5767_autodetection'
drivers/built-in.o: In function `av7110_attach':
av7110.c:(.text+0x330bda): undefined reference to `ves1x93_attach'
av7110.c:(.text+0x330bf7): undefined reference to `stv0299_attach'
av7110.c:(.text+0x330c63): undefined reference to `tda8083_attach'
av7110.c:(.text+0x330d09): undefined reference to `ves1x93_attach'
av7110.c:(.text+0x330d33): undefined reference to `tda8083_attach'
av7110.c:(.text+0x330d5d): undefined reference to `stv0297_attach'
av7110.c:(.text+0x330dbe): undefined reference to `stv0299_attach'
drivers/built-in.o: In function `tuner_attach_dtt7520x':
ngene-cards.c:(.text+0x3381cb): undefined reference to `dvb_pll_attach'
drivers/built-in.o: In function `demod_attach_lg330x':
ngene-cards.c:(.text+0x33828a): undefined reference to `lgdt330x_attach'
drivers/built-in.o: In function `demod_attach_stv0900':
ngene-cards.c:(.text+0x3383d5): undefined reference to `stv090x_attach'
drivers/built-in.o: In function `cineS2_probe':
ngene-cards.c:(.text+0x338b7f): undefined reference to `drxk_attach'
drivers/built-in.o: In function `configure_tda827x_fe':
saa7134-dvb.c:(.text+0x346ae7): undefined reference to `tda10046_attach'
drivers/built-in.o: In function `dvb_init':
saa7134-dvb.c:(.text+0x347283): undefined reference to `mt352_attach'
saa7134-dvb.c:(.text+0x3472cd): undefined reference to `mt352_attach'
saa7134-dvb.c:(.text+0x34731c): undefined reference to `tda10046_attach'
saa7134-dvb.c:(.text+0x34733c): undefined reference to `tda10046_attach'
saa7134-dvb.c:(.text+0x34735c): undefined reference to `tda10046_attach'
saa7134-dvb.c:(.text+0x347378): undefined reference to `tda10046_attach'
saa7134-dvb.c:(.text+0x3473db): undefined reference to `tda10046_attach'
drivers/built-in.o:saa7134-dvb.c:(.text+0x347502): more undefined references to `tda10046_attach' follow
drivers/built-in.o: In function `dvb_init':
saa7134-dvb.c:(.text+0x347812): undefined reference to `mt352_attach'
saa7134-dvb.c:(.text+0x347951): undefined reference to `mt312_attach'
saa7134-dvb.c:(.text+0x3479a9): undefined reference to `mt312_attach'
>> saa7134-dvb.c:(.text+0x3479c1): undefined reference to `zl10039_attach'
This is happening because a builtin module can't use directly a symbol
found on a module. By enabling CONFIG_MEDIA_ATTACH, the configuration
becomes valid, as dvb_attach() macro loads the module if needed, making
the symbol available to the builtin module.
While this bug started to appear after the patches that use IS_DEFINED
macro (like changeset 7b34be71db533f3e0cf93d53cf62d036cdb5418a), this
bug is a way ancient than that.
The thing is that, before the IS_DEFINED() patches, the logic used to be:
&& defined(MODULE))
struct dvb_frontend *zl10039_attach(struct dvb_frontend *fe,
u8 i2c_addr,
struct i2c_adapter *i2c);
static inline struct dvb_frontend *zl10039_attach(struct dvb_frontend *fe,
u8 i2c_addr,
struct i2c_adapter *i2c)
{
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
The above code, with the .config file used, was evoluting to FALSE
(instead of TRUE as it should be, as CONFIG_DVB_ZL10039 is 'm'),
and were adding the static inline code at saa7134-dvb, instead
of the external call. So, while it weren't producing any compilation
error, the code weren't working either.
So, as the overhead for using CONFIG_MEDIA_ATTACH is minimal, just
enable it, if MODULES is defined.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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The $obj-m/$obj-y vars should be adding new modules to build, not
overriding it. So, it should never use
$obj-y := foo.o
instead, it should use:
$obj-y += foo.o
Failing to do that is very bad, as it will suppress needed modules.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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The ISP clock register content is not preserved over the ISP power domain
off/on cycle. Instead of setting the clock frequencies once at probe time
the clock rates set up is moved to the runtime_resume handler, which is
invoked after the related power domain is already enabled, ensuring the
clocks are properly configured when the device is actively used.
This fixes the FIMC-IS malfunctions and STREAM ON timeout errors accuring
on some boards:
[ 59.860000] fimc_is_general_irq_handler:583 ISR_NDONE: 5: 0x800003e8, IS_ERROR_UNKNOWN
[ 59.860000] fimc_is_general_irq_handler:586 IS_ERROR_TIME_OUT
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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As suggested by Antti, this patch replaces:
https://patchwork.kernel.org/patch/2649861/
The buffer overflow is fixed by reading only the r820t ID register.
Signed-off-by: Gianluca Gennari <gennarone@gmail.com>
Acked-by: Antti Palosaari <crope@iki.fi>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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