| Commit message (Collapse) | Author | Age | Files | Lines |
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The default implementation already probes for cmdlinepart and ofpart.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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It's harmless to add 'ofpart' (the only different parser supported in
default mtdpart.c) to plat_nand. That let's us kill off one more custom
partition prober listing.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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We had an extra tab.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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This is an example of why it doesn't make much sense to put this
information here in the first place. I don't really know what purpose it
serves.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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In commit 50183936254b ("mtd: blktrans: change blktrans_getgeo return
value") we fixed the problem that ioctl(HDIO_GETGEO) might return 0
(success) for mtdblock devices which did not implement the feature and
would leave a blank (zero) result.
But now, let's get the error code right. Other code paths on this ioctl
tend to use -ENOTTY to notify the user that the ioctl() is not supported
for the device, so let's use that instead of -EOPNOTSUPP.
Suggested-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Modify function blktrans_getgeo()'s return value to -EOPNOTSUPP when
dev->tr->getgeo == NULL.
We shouldn't make the return value to 0 when dev->tr->getgeo == NULL,
because the function blktrans_getgeo() has an output value "hd_geometry"
which is usually used by some application, if returns 0 (i.e.,
"success"), it will make some application get the wrong information.
Signed-off-by: Wenlin Kang <wenlin.kang@windriver.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Hardware 8 bit ECC requires a different nand_ecclayout. Instead of adding yet
another static struct nand_ecclayout, generate it in code.
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Few recently added entries are missing SECT_4K flag despite of these
flashes supporting 4 KiB erase sectors and 0x20 erase command.
Also add a comment to help avoiding such mistakes in the future.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: Knut Wohlrab <knut.wohlrab@de.bosch.com>
Cc: Huang Shijie <shijie.huang@intel.com>
Cc: Shengzhou Liu <shengzhou.liu@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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It's an 8 MiB flash with 4 KiB erase sectors.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is
not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer
functionality only, can still be compiled if GPIOLIB is not enabled.
Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where
appropriate.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Copy to/from oob io area might not be aligned to 4 bytes. When 8 bit ECC is
used, the buffer size is 26. Add memcpy16_{to,from}io, and use them to avoid
truncating the buffer. Prefer memcpy32_{to,from}io when the buffer is properly
aligned for better performance.
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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For 4k pages the i.MX NFC hardware uses no more than 218 bytes for 8bit ECC
data. Larger oobsize confuses the logic of copy_spare(). Limit the size of used
oob size to avoid that.
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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To give people without the reference manual at hand a chance to
understand how spare area is handled in the i.MX nand controller,
improve commenting, naming of variables and coding style.
No functional change intended.
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
[baruch: declare oob_chunk_size; update comments; reword commit log]
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Remove static in front of ctrl. This variable should not be shared
between different instances of brcmnand_probe(), it should be local to
this function and stored on the stack.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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The caller already adds a new line and in the other cases there is no
new line added.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Two watchdog changes that came through different trees had a non
conflicting conflict, that is, one changed the semantics of a variable
but no actual code conflict happened. So the merge appeared fine, but
the resulting code did not behave as expected.
Commit 195daf665a62 ("watchdog: enable the new user interface of the
watchdog mechanism") changes the semantics of watchdog_user_enabled,
which thereafter is only used by the functions introduced by
b3738d293233 ("watchdog: Add watchdog enable/disable all functions").
There further appears to be a distinct lack of serialization between
setting and using watchdog_enabled, so perhaps we should wrap the
{en,dis}able_all() things in watchdog_proc_mutex.
This patch fixes a s2r failure reported by Michal; which I cannot
readily explain. But this does make the code internally consistent
again.
Reported-and-tested-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull MTD fixes from Brian Norris:
"Two MTD fixes for 4.1:
- readtest: the signal-handling code was clobbering the error codes
we should be handling/reporting in this test, rendering it useless.
Noticed by Coverity.
- the common SPI NOR flash DT binding (merged for 4.1-rc1) is being
revised, so let's change that before 4.1 is minted"
* tag 'for-linus-20150516' of git://git.infradead.org/linux-mtd:
Documentation: dt: mtd: replace "nor-jedec" binding with "jedec, spi-nor"
mtd: readtest: don't clobber error reports
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In commit 8ff16cf77ce3 ("Documentation: devicetree: m25p80: add "nor-jedec"
binding"), we added a generic "nor-jedec" binding to catch all
mostly-compatible SPI NOR flash which can be detected via the READ ID
opcode (0x9F). This was discussed and reviewed at the time, however
objections have come up since then as part of this discussion:
http://lkml.kernel.org/g/20150511224646.GJ32500@ld-irv-0074
It seems the parties involved agree that "jedec,spi-nor" does a better
job of capturing the fact that this is SPI-specific, not just any NOR
flash.
This binding was only merged for v4.1-rc1, so it's still OK to change
the naming.
At the same time, let's move the documentation to a better name.
Next up: stop referring to code (drivers/mtd/devices/m25p80.c) from the
documentation.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Rafał Miłecki <zajec5@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: devicetree@vger.kernel.org
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Mark Rutland <mark.rutland@arm.com>
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Commit 2a6a28e7922c ("mtd: Make MTD tests cancelable") accidentally
clobbered any read failure reports.
Coverity CID #1296020
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some USB fixes and new device ids for 4.1-rc4.
All are pretty minor, and have been in linux-next successfully"
* tag 'usb-4.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb-storage: Add NO_WP_DETECT quirk for Lacie 059f:0651 devices
Added another USB product ID for ELAN touchscreen quirks.
xhci: gracefully handle xhci_irq dead device
xhci: Solve full event ring by increasing TRBS_PER_SEGMENT to 256
xhci: fix isoc endpoint dequeue from advancing too far on transaction error
usb: chipidea: debug: avoid out of bound read
USB: visor: Match I330 phone more precisely
USB: pl2303: Remove support for Samsung I330
USB: cp210x: add ID for KCF Technologies PRN device
usb: gadget: remove incorrect __init/__exit annotations
usb: phy: isp1301: work around tps65010 dependency
usb: gadget: serial: fix re-ordering of tx data
usb: gadget: hid: Fix static variable usage
usb: gadget: configfs: Fix interfaces array NULL-termination
usb: gadget: xilinx: fix devm_ioremap_resource() check
usb: dwc3: dwc3-omap: correct the register macros
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git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for v4.1-rc4
Here are a few device-id changes removing a duplicate entry, refining
another and adding a third.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Samsung has just released a portable USB3 SSD, coming in a very small
and nice form factor. It's USB ID is 04e8:8001, which unfortunately is
already used by the Palm Visor driver for the Samsung I330 phone cradle.
Having pl2303 or visor pick up this device ID results in conflicts with
the usb-storage driver, which handles the newly released portable USB3
SSD.
To work around this conflict, I've dug up a mailing list post [1] from a
long time ago, in which a user posts the full USB descriptor
information. The most specific value in this appears to be the interface
class, which has value 255 (0xff). Since usb-storage requires an
interface class of 0x8, I believe it's correct to disambiguate the two
devices by matching on 0xff inside visor.
[1] http://permalink.gmane.org/gmane.linux.usb.user/4264
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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This phone is already supported by the visor driver.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Added the USB serial console device ID for KCF Technologies PRN device
which has a USB port for its serial console.
Signed-off-by: Mark Edwards <sonofaforester@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Without this flag some versions of these enclosures do not work.
Cc: stable@vger.kernel.org
Reported-and-tested-by: Christian Schaller <cschalle@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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I've had the same issue as described in commit
c68929f75dfcb6354918862b91b5778585de1fa5
Except my touchscreen's ID is
ID 04f3:0125 Elan Microelectronics Corp.
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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If the xHCI host controller has died (ie, device removed) or suffered
other serious fatal error (STS_FATAL), then xhci_irq should handle this
condition with IRQ_HANDLED instead of -ESHUTDOWN.
Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Our event ring consists of only one segment, and we risk filling
the event ring in case we get isoc transfers with short intervals
such as webcams that fill a TD every microframe (125us)
With 64 TRB segment size one usb camera could fill the event ring in 8ms.
A setup with several cameras and other devices can fill up the
event ring as it is shared between all devices.
This has occurred when uvcvideo queues 5 * 32TD URBs which then
get cancelled when the video mode changes. The cancelled URBs are returned
in the xhci interrupt context and blocks the interrupt handler from
handling the new events.
A full event ring will block xhci from scheduling traffic and affect all
devices conneted to the xhci, will see errors such as Missed Service
Intervals for isoc devices, and and Split transaction errors for LS/FS
interrupt devices.
Increasing the TRB_PER_SEGMENT will also increase the default endpoint ring
size, which is welcome as for most isoc transfer we had to dynamically
expand the endpoint ring anyway to be able to queue the 5 * 32TDs uvcvideo
queues.
The default size used to be 64 TRBs per segment
Cc: <stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Isoc TDs usually consist of one TRB, sometimes two. When all goes well we
receive only one success event for a TD, and move the dequeue pointer to
the next TD.
This fails if the TD consists of two TRBs and we get a transfer error
on the first TRB, we will then see two events for that TD.
Fix this by making sure the event we get is for the last TRB in that TD
before moving the dequeue pointer to the next TD. This will resolve some
of the uvc and dvb issues with the
"ERROR Transfer event TRB DMA ptr not part of current TD" error message
Cc: <stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-linus
Peter writes:
Only a small fix for /sys entry
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A string written by the user may not be zero terminated.
sscanf may read memory beyond the buffer if no zero byte
is found.
For testing build with CONFIG_USB_CHIPIDEA=y, CONFIG_USB_CHIPIDEA_DEBUG=y.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v4.1-rc2
Here's the first pull request for v4.1-rc cycle,
it contains a few interesting fixes including a
fix to correct register offsets on dwc3, a fix
for Kconfig dependencies on isp1301 phy driver,
and a bug fix for our configfs gadget creation
interface.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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A recent change introduced a link error for the composite
printer gadget driver:
`printer_unbind' referenced in section `.ref.data' of drivers/built-in.o: defined in discarded section `.exit.text' of drivers/built-in.o
Evidently the unbind function should not be marked __exit here,
because it is called through a callback pointer that is not necessarily
discarded, __composite_unbind() is indeed called from the error path of
composite_bind(), which can never work for a built-in driver.
Looking at the surrounding code, I found the same problem in all other
composite gadget drivers in both the bind and unbind functions, as
well as the udc platform driver 'remove' functions. Those will break
if anyone uses the 'unbind' sysfs attribute to detach a device from a
built-in driver.
This patch removes the incorrect annotations from all the gadget
drivers.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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The isp1301-omap driver contains special hooks for the TPS65010
power management controller. It provides its own 'tps65010_set_vbus_draw'
wrapper in case that driver is not enabled through Kconfig, but
fails to handle the case where isp1301-omap is built-in but TPS65010
is a loadable module, which currently results in a link error:
drivers/built-in.o: In function `isp1301_set_power':
:(.text+0x14e188): undefined reference to `tps65010_set_vbus_draw'
This is a workaround to use the same trick as before also when
tps65010 is a module. Doing a proper fix would require much larger
changes to the driver that is not really worth it when the usb-phy
drivers are going to eventually get replaced with generic-phy
drivers.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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When a single thread is sending out data over the gadget serial port,
gs_start_tx() will be called both from the sender context and from the
write completion. Since the port lock is released before the packet is
queued, the order in which the URBs are submitted is not guaranteed.
E.g.
sending thread completion (interrupt)
gs_write()
LOCK
gs_write_complete()
LOCK (wait)
gs_start_tx()
req1 = list_entry(pool->next)
UNLOCK
LOCK (acquired)
gs_start_tx()
req2 = list_entry(pool->next)
UNLOCK
usb_ep_queue(req2)
usb_ep_queue(req1)
I.e., req2 is submitted before req1 but it contains the data that
comes after req1.
To reproduce, use SMP with sending thread and completion pinned to
different CPUs, or use PREEMPT_RT, and add the following delay just
before the call to usb_ep_queue():
if (port->write_started > 0 && !list_empty(pool))
udelay(1000);
To work around this problem, make sure that only one thread is running
through the gs_start_tx() loop with an extra flag write_busy. Since
gs_start_tx() is always called with the port lock held, no further
synchronisation is needed. The original caller will continue through
the loop when the request was successfully submitted.
Signed-off-by: Philip Oberstaller <Philip.Oberstaller@septentrio.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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If we have multiple instances of hid function, each of
them may have different report descriptor, also their
length may be different.
Currently we are using static hidg_desc varable which
is being filled in hidg_bind(). Then we send its content
to host in hidg_setup() function. This content may
have been already overwriten if another instance
has executed hidg_bind().
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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memset() to 0 interfaces array before reusing
usb_configuration structure.
This commit fix bug:
ln -s functions/acm.1 configs/c.1
ln -s functions/acm.2 configs/c.1
ln -s functions/acm.3 configs/c.1
echo "UDC name" > UDC
echo "" > UDC
rm configs/c.1/acm.*
rmdir functions/*
mkdir functions/ecm.usb0
ln -s functions/ecm.usb0 configs/c.1
echo "UDC name" > UDC
[ 82.220969] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[ 82.229009] pgd = c0004000
[ 82.231698] [00000000] *pgd=00000000
[ 82.235260] Internal error: Oops: 17 [#1] PREEMPT SMP ARM
[ 82.240638] Modules linked in:
[ 82.243681] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.0.0-rc2 #39
[ 82.249926] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
[ 82.256003] task: c07cd2f0 ti: c07c8000 task.ti: c07c8000
[ 82.261393] PC is at composite_setup+0xe3c/0x1674
[ 82.266073] LR is at composite_setup+0xf20/0x1674
[ 82.270760] pc : [<c03510d4>] lr : [<c03511b8>] psr: 600001d3
[ 82.270760] sp : c07c9df0 ip : c0806448 fp : ed8c9c9c
[ 82.282216] r10: 00000001 r9 : 00000000 r8 : edaae918
[ 82.287425] r7 : ed551cc0 r6 : 00007fff r5 : 00000000 r4 : ed799634
[ 82.293934] r3 : 00000003 r2 : 00010002 r1 : edaae918 r0 : 0000002e
[ 82.300446] Flags: nZCv IRQs off FIQs off Mode SVC_32 ISA ARM Segment kernel
[ 82.307910] Control: 10c5387d Table: 6bc1804a DAC: 00000015
[ 82.313638] Process swapper/0 (pid: 0, stack limit = 0xc07c8210)
[ 82.319627] Stack: (0xc07c9df0 to 0xc07ca000)
[ 82.323969] 9de0: 00000000 c06e65f4 00000000 c07c9f68
[ 82.332130] 9e00: 00000067 c07c59ac 000003f7 edaae918 ed8c9c98 ed799690 eca2f140 200001d3
[ 82.340289] 9e20: ee79a2d8 c07c9e88 c07c5304 ffff55db 00010002 edaae810 edaae860 eda96d50
[ 82.348448] 9e40: 00000009 ee264510 00000007 c07ca444 edaae860 c0340890 c0827a40 ffff55e0
[ 82.356607] 9e60: c0827a40 eda96e40 ee264510 edaae810 00000000 edaae860 00000007 c07ca444
[ 82.364766] 9e80: edaae860 c0354170 c03407dc c033db4c edaae810 00000000 00000000 00000010
[ 82.372925] 9ea0: 00000032 c0341670 00000000 00000000 00000001 eda96e00 00000000 00000000
[ 82.381084] 9ec0: 00000000 00000032 c0803a23 ee1aa840 00000001 c005d54c 249e2450 00000000
[ 82.389244] 9ee0: 200001d3 ee1aa840 ee1aa8a0 ed84f4c0 00000000 c07c9f68 00000067 c07c59ac
[ 82.397403] 9f00: 00000000 c005d688 ee1aa840 ee1aa8a0 c07db4b4 c006009c 00000032 00000000
[ 82.405562] 9f20: 00000001 c005ce20 c07c59ac c005cf34 f002000c c07ca780 c07c9f68 00000057
[ 82.413722] 9f40: f0020000 413fc090 00000001 c00086b4 c000f804 60000053 ffffffff c07c9f9c
[ 82.421880] 9f60: c0803a20 c0011fc0 00000000 00000000 c07c9fb8 c001bee0 c07ca4f0 c057004c
[ 82.430040] 9f80: c07ca4fc c0803a20 c0803a20 413fc090 00000001 00000000 01000000 c07c9fb0
[ 82.438199] 9fa0: c000f800 c000f804 60000053 ffffffff 00000000 c0050e70 c0803bc0 c0783bd8
[ 82.446358] 9fc0: ffffffff ffffffff c0783664 00000000 00000000 c07b13e8 00000000 c0803e54
[ 82.454517] 9fe0: c07ca480 c07b13e4 c07ce40c 4000406a 00000000 40008074 00000000 00000000
[ 82.462689] [<c03510d4>] (composite_setup) from [<c0340890>] (s3c_hsotg_complete_setup+0xb4/0x418)
[ 82.471626] [<c0340890>] (s3c_hsotg_complete_setup) from [<c0354170>] (usb_gadget_giveback_request+0xc/0x10)
[ 82.481429] [<c0354170>] (usb_gadget_giveback_request) from [<c033db4c>] (s3c_hsotg_complete_request+0xcc/0x12c)
[ 82.491583] [<c033db4c>] (s3c_hsotg_complete_request) from [<c0341670>] (s3c_hsotg_irq+0x4fc/0x558)
[ 82.500614] [<c0341670>] (s3c_hsotg_irq) from [<c005d54c>] (handle_irq_event_percpu+0x50/0x150)
[ 82.509291] [<c005d54c>] (handle_irq_event_percpu) from [<c005d688>] (handle_irq_event+0x3c/0x5c)
[ 82.518145] [<c005d688>] (handle_irq_event) from [<c006009c>] (handle_fasteoi_irq+0xd4/0x18c)
[ 82.526650] [<c006009c>] (handle_fasteoi_irq) from [<c005ce20>] (generic_handle_irq+0x20/0x30)
[ 82.535242] [<c005ce20>] (generic_handle_irq) from [<c005cf34>] (__handle_domain_irq+0x6c/0xdc)
[ 82.543923] [<c005cf34>] (__handle_domain_irq) from [<c00086b4>] (gic_handle_irq+0x2c/0x6c)
[ 82.552256] [<c00086b4>] (gic_handle_irq) from [<c0011fc0>] (__irq_svc+0x40/0x74)
[ 82.559716] Exception stack(0xc07c9f68 to 0xc07c9fb0)
[ 82.564753] 9f60: 00000000 00000000 c07c9fb8 c001bee0 c07ca4f0 c057004c
[ 82.572913] 9f80: c07ca4fc c0803a20 c0803a20 413fc090 00000001 00000000 01000000 c07c9fb0
[ 82.581069] 9fa0: c000f800 c000f804 60000053 ffffffff
[ 82.586113] [<c0011fc0>] (__irq_svc) from [<c000f804>] (arch_cpu_idle+0x30/0x3c)
[ 82.593491] [<c000f804>] (arch_cpu_idle) from [<c0050e70>] (cpu_startup_entry+0x128/0x1a4)
[ 82.601740] [<c0050e70>] (cpu_startup_entry) from [<c0783bd8>] (start_kernel+0x350/0x3bc)
[ 82.609890] Code: 0a000002 e3530005 05975010 15975008 (e5953000)
[ 82.615965] ---[ end trace f57d5f599a5f1bfa ]---
Most of kernel code assume that interface array in
struct usb_configuration is NULL terminated.
When gadget is composed with configfs configuration
structure may be reused for different functions set.
This bug happens because purge_configs_funcs() sets
only next_interface_id to 0. Interface array still
contains pointers to already freed interfaces. If in
second try we add less interfaces than earlier we
may access unallocated memory when trying to get
interface descriptors.
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Cc: <stable@vger.kernel.org> # 3.10+
Signed-off-by: Felipe Balbi <balbi@ti.com>
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devm_ioremap_resource() returns IOMEM_ERR_PTR() and it never
returns NULL, fix the check to prevent access to invalid
virtual address.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Reviewed-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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The macros related to register UTMI_OTG_CTRL and UTMI_OTG_STATUS are
swapped. Correct them for readability.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here's some TTY and serial driver fixes for reported issues.
All of these have been in linux-next successfully"
* tag 'tty-4.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
pty: Fix input race when closing
tty/n_gsm.c: fix a memory leak when gsmtty is removed
Revert "serial/amba-pl011: Leave the TX IRQ alone when the UART is not open"
serial: omap: Fix error handling in probe
earlycon: Revert log warnings
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A read() from a pty master may mistakenly indicate EOF (errno == -EIO)
after the pty slave has closed, even though input data remains to be read.
For example,
pty slave | input worker | pty master
| |
| | n_tty_read()
pty_write() | | input avail? no
add data | | sleep
schedule worker --->| | .
|---> flush_to_ldisc() | .
pty_close() | fill read buffer | .
wait for worker | wakeup reader --->| .
| read buffer full? |---> input avail ? yes
|<--- yes - exit worker | copy 4096 bytes to user
TTY_OTHER_CLOSED <---| |<--- kick worker
| |
**** New read() before worker starts ****
| | n_tty_read()
| | input avail? no
| | TTY_OTHER_CLOSED? yes
| | return -EIO
Several conditions are required to trigger this race:
1. the ldisc read buffer must become full so the input worker exits
2. the read() count parameter must be >= 4096 so the ldisc read buffer
is empty
3. the subsequent read() occurs before the kicked worker has processed
more input
However, the underlying cause of the race is that data is pipelined, while
tty state is not; ie., data already written by the pty slave end is not
yet visible to the pty master end, but state changes by the pty slave end
are visible to the pty master end immediately.
Pipeline the TTY_OTHER_CLOSED state through input worker to the reader.
1. Introduce TTY_OTHER_DONE which is set by the input worker when
TTY_OTHER_CLOSED is set and either the input buffers are flushed or
input processing has completed. Readers/polls are woken when
TTY_OTHER_DONE is set.
2. Reader/poll checks TTY_OTHER_DONE instead of TTY_OTHER_CLOSED.
3. A new input worker is started from pty_close() after setting
TTY_OTHER_CLOSED, which ensures the TTY_OTHER_DONE state will be
set if the last input worker is already finished (or just about to
exit).
Remove tty_flush_to_ldisc(); no in-tree callers.
Fixes: 52bce7f8d4fc ("pty, n_tty: Simplify input processing on final close")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=96311
BugLink: http://bugs.launchpad.net/bugs/1429756
Cc: <stable@vger.kernel.org> # 3.19+
Reported-by: Andy Whitcroft <apw@canonical.com>
Reported-by: H.J. Lu <hjl.tools@gmail.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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when gsmtty_remove put dlci, it will cause memory leak if dlci->port's refcount is zero.
So we do the cleanup work in .cleanup callback instead.
dlci will be last put in two call chains.
1) gsmld_close -> gsm_cleanup_mux -> gsm_dlci_release -> dlci_put
2) gsmld_remove -> dlci_put
so there is a race. the memory leak depends on the race.
In call chain 2. we hit the memory leak. below comment tells.
release_tty -> tty_driver_remove_tty -> gsmtty_remove -> dlci_put -> tty_port_destructor (WARN_ON(port->itty) and return directly)
|
tty->port->itty = NULL;
|
tty_kref_put ---> release_one_tty -> gsmtty_cleanup (added by our patch)
So our patch fix the memory leak by doing the cleanup work after tty core did.
Signed-off-by: Pan Xinhui <xinhuix.pan@intel.com>
Fixes: dfabf7ffa30585
Cc: stable <stable@vger.kernel.org> # 3.14+
Acked-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This reverts commit f2ee6dfa0e8597eea8b98d240b0033994e20d215.
Jakub Kiciński observed that this patch can cause the pl011
driver to hang if if the only process with a pl011 port open is
killed by a signal, pl011_shutdown() can get called with an
arbitrary amount of data still in the FIFO.
Calling _shutdown() with the TX FIFO non-empty is questionable
behaviour and my itself be a bug.
Since the affected patch was speculative anyway, and brings limited
benefit, the simplest course is to remove the assumption that TXIS
will always be left asserted after the port is shut down.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There is pm_qos_add_request() being executed on serial_omap_probe(),
which stores "&up->pm_qos_request" from omap-serial driver to
"pm_qos_array[PM_QOS_CPU_DMA_LATENCY]->constraints". If
serial_omap_probe() fails after pm_qos_add_request() (e.g. on
uart_add_one_port() call), pm_qos_array still keeping pm_qos_request
struct from omap-serial driver, which is not valid anymore (since driver
failed). This leads further to kernel crash on pm_qos_update_target(),
executing from some completely different driver.
We were observing this while trying to run audio playback while having
one of omap-serial driver instances failed on uart_add_one_port() call:
Unable to handle kernel paging request at virtual address fffffffc
Backtrace:
(plist_add) from (pm_qos_update_target)
(pm_qos_update_target) from (pm_qos_add_request)
(pm_qos_add_request) from (snd_pcm_hw_params)
(snd_pcm_hw_params) from (snd_pcm_common_ioctl1)
(snd_pcm_common_ioctl1) from (snd_pcm_playback_ioctl1)
(snd_pcm_playback_ioctl1) from (snd_pcm_playback_ioctl)
(snd_pcm_playback_ioctl) from (do_vfs_ioctl)
(do_vfs_ioctl) from (SyS_ioctl)
(SyS_ioctl) from (ret_fast_syscall)
This patch adds pm_qos_remove_request() on fail path in
serial_omap_probe() in order to fix this issue. While at it, free the
wakeup settings on fail path as well, just like it's done in
serial_omap_remove().
Signed-off-by: Semen Protsenko <semen.protsenko@globallogic.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Log warnings meant to help diagnose problems setting up earlycon
are reporting false positives for 'console='. Revert to the
previous behavior which reported nothing.
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging / IIO driver fixes from Greg KH:
"Here's some staging and iio driver fixes to resolve a number of
reported issues.
All of these have been in linux-next for a while"
* tag 'staging-4.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (31 commits)
iio: light: hid-sensor-prox: Fix memory leak in probe()
iio: adc: cc10001: Add delay before setting START bit
iio: adc: cc10001: Fix regulator_get_voltage() return value check
iio: adc: cc10001: Fix incorrect use of power-up/power-down register
staging: gdm724x: Correction of variable usage after applying ALIGN()
iio: adc: cc10001: Fix the channel number mapping
staging: vt6655: lock MACvWriteBSSIDAddress.
staging: vt6655: CARDbUpdateTSF bss timestamp correct tsf counter value.
staging: vt6655: vnt_tx_packet Correct TX order of OWNED_BY_NIC
staging: vt6655: Fix 80211 control and management status reporting.
staging: vt6655: implement IEEE80211_TX_STAT_NOACK_TRANSMITTED
staging: vt6655: device_free_tx_buf use only ieee80211_tx_status_irqsafe
staging: vt6656: use ieee80211_tx_info to select packet type.
staging: rtl8712: freeing an ERR_PTR
staging: sm750: remove incorrect __exit annotation
iio: kfifo: Set update_needed to false only if a buffer was allocated
iio: mcp320x: Fix occasional incorrect readings
iio: accel: mma9553: check input value for activity period
iio: accel: mma9553: add enable channel for activity
iio: accel: mma9551_core: prevent buffer overrun
...
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git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
The usual mixed bag of fixes for IIO in the 4.1 cycle.
Second version of this pull request as a small fix to a fix turned
up before Greg pulled it for a cc10001 patch near the top of the tree.
One core fix
* Set updated for a iio kfifo was incorrectly set to false during a failed
update, resulting in atttempts to repeat the failed operation appearing
to succeed.
This time I've decided to list the driver fixes in alphabetical order rather
than 'randomly'.
* axp288_adc - a recent change added a check for valid info masks when
reading channels from consumer drivers.
* bmp280 - temperature compensation was failing to read the tfine value, hence
causing a temperature of 0 to always be returned and incorrect presure
measurements.
* cc10001 - Fix channel number mapping when some channels are reserved for
remote CPUs. Fix an issue with the use of the power-up/power-down register
(basically wrong polarity). Fix an issue due to the missinterpretting the
return value from regulator_get_voltage. Add a delay before the start bit
as recommended for the hardware to avoid data corruption.
* hid pressure - fix channel spec of modfiied, but no modifier (which makes no
sense!)
* hid proximity - fix channel spec of modified, but no modifier (which makes
no sense!). Fix a memory leak in the probe function.
* mcp320x - occasional incorrect readings on dma using spi busses due to
cacheline corruption. Fixed by forcing ___cacheline_aligned for the buffers.
* mma9551 - buffer overrun fix (miss specified maximum length of buffers)
* mma9553 - endian fix on status message. Add an enable element for activity
channel. Input checking for activity period to avoid rather unpredictable
results.
* spmi-vadc - fix an overflow in the output value normalization seen on some
boards.
* st-snesors - oops due to use of a mutex that is not yet initialized during
probe.
* xilinx adc - Some wrong register addresses, a wrong address for vccaux
channel, incorrect scale on VREFP and incorrect sign on VREFN.
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