| Commit message (Collapse) | Author | Age | Files | Lines |
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* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (21 commits)
[S390] dasd: fix race condition in resume code
[S390] Add EX_TABLE for addressing exception in usercopy functions.
[S390] 64-bit register support for 31-bit processes
[S390] hibernate: Use correct place for CPU address in lowcore
[S390] pm: ignore time spend in suspended state
[S390] zcrypt: Improve some comments
[S390] zcrypt: Fix sparse warning.
[S390] perf_counter: fix vdso detection
[S390] ftrace: drop nmi protection
[S390] compat: fix truncate system call wrapper
[S390] Provide arch specific mdelay implementation.
[S390] Fix enabled udelay for short delays.
[S390] cio: allow setting boxed devices offline
[S390] cio: make not operational handling consistent
[S390] cio: make disconnected handling consistent
[S390] Fix memory leak in /proc/cio_ignore
[S390] cio: channel path memory leak
[S390] module: fix memory leak in s390 module loader
[S390] Enable kmemleak on s390.
[S390] 3270 console build fix
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There is a race while re-reading the device characteristics. After
cleaning the memory area a cqr is build which reads the device
characteristics. This may take a rather long time and the device
characteristics structure is zero during this. Now it could be
possible that the block tasklet starts working and a new cqr will be
build. The build_cp command refers to the device characteristics
structure and this may lead into a divide by zero exception.
Fix this by re-reading the device characteristics into a temporary
structur and copy the data to the original structure. Also take the
ccwdev_lock.
Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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This patch adds an EX_TABLE entry to mvc{p|s|os} usercopy functions that
may be called with KERNEL_DS. In combination with collaborative memory
management, kernel pages marked as unused may trigger an adressing exception
in the usercopy functions. This fixes an unhandled addressing exception bug
where strncpy_from_user() is used with len > strnlen and KERNEL_DS, crossing
a page boundary to an unused page.
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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From: Heiko Carstens <heiko.carstens@de.ibm.com>
From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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We used address 0x1084 instead of 0x84 to store the suspend CPU address.
With this patch we use the correct address 0x84 as it is defined in
the POP.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The time a system has been suspended should not show up in any
of the cputime accounting fields. The time of inactivity is definitly
not any form of real cputime nor is it idle time.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Improve the comments for switch cases without a break. This fixes
some warnings of a code checker tool.
Signed-off-by: Felix Beck <felix.beck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Do not shadow earlier symbol.
Signed-off-by: Felix Beck <felix.beck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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s390 version of f2053f1a "powerpc/perf_counter: Fix vdso detection".
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The function graph tracer used to have a protection against NMI
while entering a function entry tracing. But this is useless now,
the tracer is reentrant and the ring buffer supports NMI tracing.
Same as 07868b086cca784f4b532fc2ab574ec3a73b468a for x86.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The system call takes a signed length parameter. So perform sign
extension instead of zero extension.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Use an own implementation instead of the common code udelay loop.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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When udelay() gets called with a delay that would expire before the
next clock event it reprograms the clock comparator.
When the interrupt happens the clock comparator won't be resetted
therefore the interrupt condition doesn't get cleared.
The result is an endless timer interrupt loop until the next clock
event would expire (stored in lowcore).
So udelay() usually would wait much longer for small delays than it
should.
Fix this by disabling the local tick which makes sure that the clock
comparator will be resetted when a timer interrupt happens.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Allow users to set boxed devices offline. After setting them
offline, the device state will still be boxed.
Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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When a ccw device appears not operational, inform the associated
device driver and act according to the response: if the driver
wants to keep the device, put it into the disconnected state.
If not, or if there is no driver or if the device is not online,
unregister it. This approach is consistent with no-path event
handling.
Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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When there is no path left to a ccw device, inform the associated
device driver and act according to the response: if the driver
wants to keep the device, put it into the disconnected state.
If not, or if there is no driver or if the device is not online,
unregister it.
Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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There is a memory leak in /proc/cio_ignore. The iterator is allocated
in cio_ignore_proc_seq_start, but never freed in
cio_ignore_proc_seq_stop, because we cannot use the iterator
that was passed by seqfile. The seqfile interface passes the last
seen iterator to the stop function and not the first one. Since our
next function will return NULL at the end, the iter passed to
cio_ignore_proc_seq_stop is NULL. The original iter has leaked.
The solution is to use seq_open_private.
Found with kmemleak:
unreferenced object 0x1c720580 (size 32):
comm "head", pid 973, jiffies 4294958302
hex dump (first 32 bytes):
00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<0000000000203154>] kmem_cache_alloc+0x190/0x19c
[<00000000003fb462>] cio_ignore_proc_seq_start+0x5e/0x128
[<0000000000231018>] seq_read+0xc8/0x4bc
[<0000000000273954>] proc_reg_read+0xa8/0xf4
[<000000000020e3d8>] vfs_read+0xac/0x1a4
[<000000000020e5c6>] SyS_read+0x52/0xa8
[<000000000011836e>] sysc_noemu+0x10/0x16
[<0000004690b7936c>] 0x4690b7936c
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Move dev_set_name to when we know that the device will actually be
registered in order to avoid a memory leak if the allocated memory
for the channel path has to be freed.
Signed-off-by: Michael Ernst <mernst@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The s390 version of module_frob_arch_sections allocates additional
syminfos for got and plt offsets. These syminfos are freed on
sucessful module load. If the module fails to load (e.g. missing
dependency when using insmod instead of modprobe) this area is not
freed.
This patch lets module_free free this area. Please note, we have to
set the pointer to NULL since module_free is called several times
from the generic code.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Also increase the maximum possible kmemleak early log entries since
2000 are not sufficient on s390.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Fix this build failure:
drivers/s390/built-in.o: In function `raw3270_pm_unfreeze':
(.text+0x3ac04): undefined reference to `ccw_device_force_console'
with:
CONFIG_TN3270=y
CONFIG_TN3270_CONSOLE=n
CONFIG_TN3215_CONSOLE=n
Reported-by: Kamalesh Babulal <kamalesh@linux.vnet.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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next-20090925 randconfig build breaks on s390x, with CONFIG_AIO=n.
arch/s390/mm/pgtable.c: In function 's390_enable_sie':
arch/s390/mm/pgtable.c:282: error: 'struct mm_struct' has no member named 'ioctx_list'
arch/s390/mm/pgtable.c:298: error: 'struct mm_struct' has no member named 'ioctx_list'
make[1]: *** [arch/s390/mm/pgtable.o] Error 1
Reported-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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An interestingly corrupted romfs file system exposed a problem with the
romfs_dev_strnlen function: it's passing the wrong value to its helpers.
Rather than limit the string to the length passed in by the callers, it
uses the size of the device as the limit.
Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (32 commits)
USB: serial: no unnecessary GFP_ATOMIC in oti6858
USB: serial: fix race between unthrottle and completion handler in visor
USB: serial: fix assumption that throttle/unthrottle cannot sleep
USB: serial: fix race between unthrottle and completion handler in symbolserial
USB: serial: fix race between unthrottle and completion handler in opticon
USB: ehci: Fix isoc scheduling boundary checking.
USB: storage: When a device returns no sense data, call it a Hardware Error
USB: small fix in error case of suspend in generic usbserial code
USB: visor: fix trivial accounting bug in visor driver
USB: Fix throttling in generic usbserial driver
USB: cp210x: Add support for the DW700 UART
USB: ipaq: fix oops when device is plugged in
USB: isp1362: fix build warnings on 64-bit systems
USB: gadget: imx_udc: Use resource size
USB: storage: iRiver P7 UNUSUAL_DEV patch
USB: musb: make HAVE_CLK support optional
USB: xhci: Fix dropping endpoints from the xHC schedule.
USB: xhci: Don't wait for a disable slot cmd when HC dies.
USB: xhci: Handle canceled URBs when HC dies.
USB: xhci: Stop debugging polling loop when HC dies.
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GFP_ATOMIC without good cause is evil.
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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usb:usbserial:visor: fix race between unthrottle and completion handler
visor_unthrottle() mustn't resubmit the URB unconditionally
as the URB may still be running.
the same bug as opticon.
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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many serial subdrivers are clearly written as if throttle/unthrottle
cannot sleep. This leads to unneeded atomic submissions. This
patch converts affected drivers in a way to makes very clear that
throttle/unthrottle can sleep. Thus future misdesigns can be avoided
and efficiency and reliability improved.
This removes any such assumption using GFP_KERNEL and spin_lock_irq()
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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usb:usbserial:symbolserial: fix race between unthrottle and completion handler
symbol_unthrottle() mustn't resubmit the URB unconditionally
as the URB may still be running.
the same bug as opticon.
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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usb:usbserial:opticon: fix race between unthrottle and completion handler
opticon_unthrottle() mustn't resubmit the URB unconditionally
as the URB may still be running.
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The EHCI driver does some bounds checking when it's scheduling an iTD for
an active endpoint. It sets the local variable start to
stream->next_uframe and moves that variable further in the schedule if
necessary. However, the driver fails to do anything with start before
jumping to the ready label and setting the URB's starting frame to
stream->next_uframe. Alan Stern confirms the EHCI driver should set
stream->next_uframe to start before jumping.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as1294) fixes a problem that has plagued users for several
kernel releases. Some USB mass-storage devices don't return any sense
data when they encounter certain kinds of errors. The SCSI layer
interprets this to mean that the operation should be retried, and the
same thing happens -- over and over again with no limit. In some
circumstances (such as when a bus reset occurs) that is the right
thing to do, but not here.
The patch checks for this condition (a transport failure with no sense
data) and changes the result code to DID_ERROR and the sense code to
Hardware Error. This does get only a limited number of retries, and
so the command will fail relatively quickly instead of getting stuck
in an infinite loop.
This fixes a large part of Bugzilla #14118.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Mantas Mikulenas <grawity@gmail.com>
CC: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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usb:usbserial: fix flags in error case of suspension
suspended flag must be reset in error case
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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usb:usbserial:visor: fix accounting in error case
data not pushed to the tty layer due to an error mustn't be counted
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The generic usbserial driver in Linux 2.6.31 halts its receiving
channel in response to throttle requests from the line discipline.
Unfortunately it drops the contents of the first URB received after
throttling takes effect. This patch corrects that problem.
Signed-off-by: Joris van Rantwijk <jorispubl@xs4all.nl>
Acked-by: Johan Hovold <jhovold@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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In the Dell inspiron mini 10, the GPS is connected via a cp2102. This patch
adds detection of this USB device. (I haven't managed to use the GPS under
Linux yet, though)
Signed-off-by: Éric Piel <eric.piel@tremplin-utc.net>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as1293) fixes a problem with the ipaq serial driver. It
tries to bind to all the interfaces, even those that don't have enough
endpoints. The symptom is an invalid memory reference and oops when
the device is plugged in.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: stable <stable@kernel.org>
Tested-by: Matthias Geissert <geissert@mathematik.tu-darmstadt.de>
Tested-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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A bunch of places assumed pointers were 32-bits in size (bit checking and
debug output), but none of these affected runtime functionality.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Use the resource_size function instead of manually calculating the
resource size. This reduces the chance of introducing off-by-one errors.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Phil Dibowitz <phil@ipom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The Blackfin port doesn't support HAVE_CLK and the musb driver works fine
with support stubbed out, so take the existing Blackfin clk stubs and move
them to common musb code so we can drop the Kconfig dependency.
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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When an endpoint is to be dropped from the hardware bandwidth schedule, we
want to clear its add flag.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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When the host controller dies or is removed while a device is plugged in,
the USB core will attempt to deallocate the struct usb_device. That will
call into xhci_free_dev(). This function used to attempt to submit a
disable slot command to the host controller and clean up the device
structures when that command returned. Change xhci_free_dev() to skip the
command submission and just free the memory if the host controller died.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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When the host controller dies (e.g. it is removed from a PCI card slot),
the xHCI driver cannot expect commands to complete. The buggy code this
patch fixes would mark an URB as canceled and then expect the URB to be
completed when the stop endpoint command completed. That would never
happen if the host controller was dead, so the USB core would just hang in
the disconnect code.
If the host controller died, and the driver asks to cancel an URB, free
any structures associated with that URB and immediately give it back.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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If the host controller card is removed from the system, stop the timer
function to debug the xHCI rings.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The current 10ms timeout is too short for some normal USBTMC device
operation, increase it to a value which was tested with previously
affected Tektronix oscilloscopes.
Signed-off-by: Gergely Imreh <imrehg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Peter Magdina <peter@magdina.sk>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Stanse found a memory leak in lcd_probe. Instead of returning without
releasing the memory, jump to the error label which frees it.
http://stanse.fi.muni.cz/
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Updated sierra driver version from 1.3.7 to 1.3.8 now that the autosuspend
capabilities were added to the driver.
Signed-off-by: Elina Pasheva <epasheva@sierrawireless.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as1295) fixes a recently-added bug in the USB serial core.
If certain kinds of errors occur during probing, the core may call a
serial driver's release method without previously calling the attach
method. This causes some drivers (io_ti in particular) to perform an
invalid memory access.
The patch adds a new flag to keep track of whether or not attach has
been called.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Jean-Denis Girard <jd.girard@sysnux.pf>
CC: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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