- 31 Mar, 2014 19 commits
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Ben Hutchings authored
commit d9317aea upstream. As part of a workaround for a hardware erratum in the SFC9100 family (SF bug 35388), the TX_DESC_UPD_DWORD register address is also used for communicating with the event block, and only descriptor pointer values < 2048 are valid. If the TX DMA ring size is increased to 4096 descriptors (which the firmware still allows) then we may write a descriptor pointer value >= 2048, which has entirely different and undesirable effects! Limit the TX DMA ring size correctly when this workaround is in effect. Fixes: 8127d661 ('sfc: Add support for Solarflare SFC9100 family') Signed-off-by:
Ben Hutchings <bhutchings@solarflare.com> Signed-off-by:
Shradha Shah <sshah@solarflare.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
Jiri Slaby <jslaby@suse.cz>
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Stephen Warren authored
commit e126a646 upstream. The REVISION_ID register is not currently marked readable. snd_soc_read() refuses to read the register, and hence probe() fails. Fixes: d4807ad2 ("regmap: Check readable regs in _regmap_read") [exposed the bug, by checking for readability] Fixes: 685e4215 ("ASoC: Replace max98090 Device Driver") [left out this register from the readable list] Signed-off-by:
Stephen Warren <swarren@nvidia.com> Signed-off-by:
Mark Brown <broonie@linaro.org> Signed-off-by:
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Josh Durgin authored
commit 9a1ea2db upstream. With the current full handling, there is a race between osds and clients getting the first map marked full. If the osd wins, it will return -ENOSPC to any writes, but the client may already have writes in flight. This results in the client getting the error and propagating it up the stack. For rbd, the block layer turns this into EIO, which can cause corruption in filesystems above it. To avoid this race, osds are being changed to drop writes that came from clients with an osdmap older than the last osdmap marked full. In order for this to work, clients must resend all writes after they encounter a full -> not full transition in the osdmap. osds will wait for an updated map instead of processing a request from a client with a newer map, so resent writes will not be dropped by the osd unless there is another not full -> full transition. This approach requires both osds and clients to be fixed to avoid the race. Old clients talking to osds with this fix may hang instead of returning EIO and potentially corrupting an fs. New clients talking to old osds have the same behavior as before if they encounter this race. Fixes: http://tracker.ceph.com/issues/6938Reviewed-by:
Sage Weil <sage@inktank.com> Signed-off-by:
Josh Durgin <josh.durgin@inktank.com> Signed-off-by:
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Josh Durgin authored
commit d29adb34 upstream. The PAUSEWR and PAUSERD flags are meant to stop the cluster from processing writes and reads, respectively. The FULL flag is set when the cluster determines that it is out of space, and will no longer process writes. PAUSEWR and PAUSERD are purely client-side settings already implemented in userspace clients. The osd does nothing special with these flags. When the FULL flag is set, however, the osd responds to all writes with -ENOSPC. For cephfs, this makes sense, but for rbd the block layer translates this into EIO. If a cluster goes from full to non-full quickly, a filesystem on top of rbd will not behave well, since some writes succeed while others get EIO. Fix this by blocking any writes when the FULL flag is set in the osd client. This is the same strategy used by userspace, so apply it by default. A follow-on patch makes this configurable. __map_request() is called to re-target osd requests in case the available osds changed. Add a paused field to a ceph_osd_request, and set it whenever an appropriate osd map flag is set. Avoid queueing paused requests in __map_request(), but force them to be resent if they become unpaused. Also subscribe to the next osd map from the monitor if any of these flags are set, so paused requests can be unblocked as soon as possible. Fixes: http://tracker.ceph.com/issues/6079Reviewed-by:
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Dan Carpenter authored
commit e351bf25 upstream. It upsets static checkers when we don't check for allocation failure. I moved the memset() of "tv" earlier so we don't use uninitialized data on error. Fixes: 1d212cf0 ('[media] cx18: struct i2c_client is too big for stack') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
Andy Walls <awalls@md.metrocast.net> Signed-off-by:
Mauro Carvalho Chehab <m.chehab@samsung.com> Signed-off-by:
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Dan Carpenter authored
commit 324ed533 upstream. We recently introduced some new error paths but the unlocks are missing. Fixes: 0065a79a ('[media] dw2102: Don't use dynamic static allocation') Signed-off-by:
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Dan Carpenter authored
commit 1cdbcc5d upstream. We recently introduced some new error paths which are missing their unlocks. Fixes: 64f7ef8a ('[media] cxusb: Don't use dynamic static allocation') Signed-off-by:
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Christian Riesch authored
commit 33b7107f upstream. In commit 6892b41d Author: Lad, Prabhakar <prabhakar.csengg@gmail.com> Date: Tue Jun 25 21:24:51 2013 +0530 net: davinci: emac: Convert to devm_* api the call of request_irq is replaced by devm_request_irq and the call of free_irq is removed. But since interrupts are requested in emac_dev_open, doing ifconfig up/down on the board requests the interrupts again each time, causing devm_request_irq to fail. The interface is dead until the device is rebooted. This patch reverts said commit partially: It changes the driver back to use request_irq instead of devm_request_irq, puts free_irq back in place, but keeps the remaining changes of the original patch. Reported-by:
Jon Ringle <jon@ringle.org> Signed-off-by:
Christian Riesch <christian.riesch@omicron.at> Cc: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by:
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Vaibhav Nagarnaik authored
commit 87291347 upstream. In event format strings, the array size is reported in two locations. One in array subscript and then via the "size:" attribute. The values reported there have a mismatch. For e.g., in sched:sched_switch the prev_comm and next_comm character arrays have subscript values as [32] where as the actual field size is 16. name: sched_switch ID: 301 format: field:unsigned short common_type; offset:0; size:2; signed:0; field:unsigned char common_flags; offset:2; size:1; signed:0; field:unsigned char common_preempt_count; offset:3; size:1;signed:0; field:int common_pid; offset:4; size:4; signed:1; field:char prev_comm[32]; offset:8; size:16; signed:1; field:pid_t prev_pid; offset:24; size:4; signed:1; field:int prev_prio; offset:28; size:4; signed:1; field:long prev_state; offset:32; size:8; signed:1; field:char next_comm[32]; offset:40; size:16; signed:1; field:pid_t next_pid; offset:56; size:4; signed:1; field:int next_prio; offset:60; size:4; signed:1; After bisection, the following commit was blamed: 92edca07 tracing: Use direct field, type and system names This commit removes the duplication of strings for field->name and field->type assuming that all the strings passed in __trace_define_field() are immutable. This is not true for arrays, where the type string is created in event_storage variable and field->type for all array fields points to event_storage. Use __stringify() to create a string constant for the type string. Also, get rid of event_storage and event_storage_mutex that are not needed anymore. also, an added benefit is that this reduces the overhead of events a bit more: text data bss dec hex filename 8424787 2036472 1302528 11763787 b3804b vmlinux 8420814 2036408 1302528 11759750 b37086 vmlinux.patched Link: http://lkml.kernel.org/r/1392349908-29685-1-git-send-email-vnagarnaik@google.com Cc: Laurent Chavey <chavey@google.com> Signed-off-by:
Vaibhav Nagarnaik <vnagarnaik@google.com> Signed-off-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
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Chris Wilson authored
commit 0f4706d2 upstream. We have reports of heavy screen corruption if we try to use the stolen memory reserved by the BIOS whilst the DMA-Remapper is active. This quirk may be only specific to a few machines or BIOSes, but first lets apply the big hammer and always disable use of stolen memory when DMAR is active. v2 by Jani: Rebase on -fixes, only look at intel_iommu_gfx_mapped. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68535Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Signed-off-by:
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Stefan Agner authored
commit 224aa3ed upstream. Vybrids PIT register is monitonic decreasing. However, sched_clock reading needs to be monitonic increasing. Use bitwise not to get the complement of the clock register. This fixes the clock going backward. Also, the clock now starts at 0 since we load the register with the maximum value at start. Signed-off-by:
Stefan Agner <stefan@agner.ch> Acked-by:
Shawn Guo <shawn.guo@linaro.org> Cc: daniel.lezcano@linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux@arm.linux.org.uk Link: http://lkml.kernel.org/r/d25af915993aec1b486be653eb86f748ddef54fe.1394057313.git.stefan@agner.chSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Charles Keepax authored
commit 749d3223 upstream. The snd_compr_open function would always return 0 even if the compressed ops open function failed, obviously this is incorrect. Looks like this was introduced by a small typo in: commit a0830dbd ALSA: Add a reference counter to card instance This patch returns the value from the compressed op as it should. Signed-off-by:
Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by:
Vinod Koul <vinod.koul@intel.com> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Fernando Luis Vazquez Cao authored
commit 47587fc0 upstream. I noticed that after hot unplugging a Logitech unifying receiver (drivers/hid/hid-logitech-dj.c) the kernel would occasionally spew a stack trace similar to this: usb 1-1.1.2: USB disconnect, device number 7 WARNING: CPU: 0 PID: 2865 at fs/sysfs/group.c:216 device_del+0x40/0x1b0() sysfs group ffffffff8187fa20 not found for kobject 'hidraw0' [...] CPU: 0 PID: 2865 Comm: upowerd Tainted: G W 3.14.0-rc4 #7 Hardware name: LENOVO 7783PN4/ , BIOS 9HKT43AUS 07/11/2011 0000000000000009 ffffffff814cd684 ffff880427ccfdf8 ffffffff810616e7 ffff88041ec61800 ffff880427ccfe48 ffff88041e444d80 ffff880426fab8e8 ffff880429359960 ffffffff8106174c ffffffff81714b98 0000000000000028 Call Trace: [<ffffffff814cd684>] ? dump_stack+0x41/0x51 [<ffffffff810616e7>] ? warn_slowpath_common+0x77/0x90 [<ffffffff8106174c>] ? warn_slowpath_fmt+0x4c/0x50 [<ffffffff81374fd0>] ? device_del+0x40/0x1b0 [<ffffffff8137516f>] ? device_unregister+0x2f/0x50 [<ffffffff813751fa>] ? device_destroy+0x3a/0x40 [<ffffffffa03ca245>] ? drop_ref+0x55/0x120 [hid] [<ffffffffa03ca3e6>] ? hidraw_release+0x96/0xb0 [hid] [<ffffffff811929da>] ? __fput+0xca/0x210 [<ffffffff8107fe17>] ? task_work_run+0x97/0xd0 [<ffffffff810139a9>] ? do_notify_resume+0x69/0xa0 [<ffffffff814dbd22>] ? int_signal+0x12/0x17 ---[ end trace 63f4a46f6566d737 ]--- During device removal hid_disconnect() is called via hid_hw_stop() to stop the device and free all its resources, including the sysfs files. The problem is that if a user space process, such as upowerd, holds a reference to a hidraw file the corresponding sysfs files will be kept around (drop_ref() does not call device_destroy() if the open counter is not 0) and it will be usb_disconnect() who, by calling device_del() for the USB device, will indirectly remove the sysfs files of the hidraw device (sysfs_remove_dir() is recursive these days). Because of this, by the time user space releases the last reference to the hidraw file and drop_ref() tries to destroy the device the sysfs files are already gone and the kernel will print the warning above. Fix this by calling device_destroy() at USB disconnect time. Signed-off-by:
Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> Reviewed-by:
David Herrmann <dh.herrmann@gmail.com> Signed-off-by:
Jiri Kosina <jkosina@suse.cz> Signed-off-by:
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Stephen Warren authored
commit 88596857 upstream. Fix tegra_init_cache() to check whether the system has a PL310 cache before touching the PL310 registers. This prevents access to non-existent registers on Tegra114 and later. Note for stable kernels: In <= v3.12, the file to patch is arch/arm/mach-tegra/common.c. Signed-off-by:
Olof Johansson <olof@lixom.net> Signed-off-by:
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Catalin Marinas authored
commit 4f00130b upstream. This provides better performance compared to Device GRE and also allows unaligned accesses. Such memory is intended to be used with standard RAM (e.g. framebuffers) and not I/O. Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
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Catalin Marinas authored
commit df503ba7 upstream. With the spin-table SMP booting method, secondary CPUs poll a location passed in the DT. The foundation-v8.dts file doesn't have this memory reserved and there is a risk of Linux using it before secondary CPUs are started. Signed-off-by:
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Simon Wood authored
commit 114a55cf upstream. Re-arrange code slightly to ensure that device properties are configured before calling auto-center command. Reported-by:
Michal Malý <madcatxster@prifuk.cz> Signed-off-by:
Simon Wood <simon@mungewell.org> Signed-off-by:
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Heiko Carstens authored
commit ef089941 upstream. "elevator: Fix a race in elevator switching and md device initialization" changed the semantics of elevator_init() in a way that now enforces to hold the corresponding request queue's sysfs_lock when calling elevator_init() to fix a race. The patch did not convert the s390 dasd device driver which is the only device driver which also calls elevator_init(). So add the missing locking. Cc: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
Jens Axboe <axboe@kernel.dk> Signed-off-by:
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AKASHI Takahiro authored
commit 7b22c035 upstream. In ftrace_syscall_enter(), syscall_get_arguments(..., 0, n, ...) if (i == 0) { <handle orig_x0> ...; n--;} memcpy(..., n * sizeof(args[0])); If 'number of arguments(n)' is zero and 'argument index(i)' is also zero in syscall_get_arguments(), none of arguments should be copied by memcpy(). Otherwise 'n--' can be a big positive number and unexpected amount of data will be copied. Tracing system calls which take no argument, say sync(void), may hit this case and eventually make the system corrupted. This patch fixes the issue both in syscall_get_arguments() and syscall_set_arguments(). Signed-off-by:
AKASHI Takahiro <takahiro.akashi@linaro.org> Acked-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
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- 27 Mar, 2014 1 commit
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Jiri Slaby authored
With upstream commit defd8848, 3.12 commit 2f82fa98, we introduced a warning: drivers/infiniband/ulp/isert/ib_isert.c: In function 'isert_cq_rx_comp_err': drivers/infiniband/ulp/isert/ib_isert.c:##L##: warning: unused variable 'ib_dev' [-Wunused-variable] Remove ib_dev as it is unused. Signed-off-by:
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- 26 Mar, 2014 10 commits
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Mengdong Lin authored
commit 75dcbe4d upstream. Broadwell and Haswell have the same behavior on display audio. So this patch defines is_haswell_plus() to include codecs for both Haswell and its successor Broadwell, and apply all Haswell fix-ups to Broadwell. Signed-off-by:
Mengdong Lin <mengdong.lin@intel.com> Signed-off-by:
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Mengdong Lin authored
commit 3adadd28 upstream. This patch adds codec ID (0x80862808) and module alias for Broadwell display codec. Signed-off-by:
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Mengdong Lin authored
commit 862d7618 upstream. This patch adds the device ID for Intel Broadwell display HD-Audio controller, and applies Haswell properties to this device. Signed-off-by:
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Anton Blanchard authored
commit d746ca95 upstream. The code to load a MAC address into a u64 for passing to the hypervisor via a register is broken on little endian. Create a helper function called ibmveth_encode_mac_addr which does the right thing in both big and little endian. We were storing the MAC address in a long in struct ibmveth_adapter. It's never used so remove it - we don't need another place in the driver where we create endian issues with MAC addresses. Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
Torsten Duwe <duwe@suse.de> Signed-off-by:
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Li Zefan authored
commit 0ab02ca8 upstream. Setup cgroupfs like this: # mount -t cgroup -o cpuacct xxx /cgroup # mkdir /cgroup/sub1 # mkdir /cgroup/sub2 Then run these two commands: # for ((; ;)) { mkdir /cgroup/sub1/tmp && rmdir /mnt/sub1/tmp; } & # for ((; ;)) { mkdir /cgroup/sub2/tmp && rmdir /mnt/sub2/tmp; } & After seconds you may see this warning: ------------[ cut here ]------------ WARNING: CPU: 1 PID: 25243 at lib/idr.c:527 sub_remove+0x87/0x1b0() idr_remove called for id=6 which is not allocated. ... Call Trace: [<ffffffff8156063c>] dump_stack+0x7a/0x96 [<ffffffff810591ac>] warn_slowpath_common+0x8c/0xc0 [<ffffffff81059296>] warn_slowpath_fmt+0x46/0x50 [<ffffffff81300aa7>] sub_remove+0x87/0x1b0 [<ffffffff810f3f02>] ? css_killed_work_fn+0x32/0x1b0 [<ffffffff81300bf5>] idr_remove+0x25/0xd0 [<ffffffff810f2bab>] cgroup_destroy_css_killed+0x5b/0xc0 [<ffffffff810f4000>] css_killed_work_fn+0x130/0x1b0 [<ffffffff8107cdbc>] process_one_work+0x26c/0x550 [<ffffffff8107eefe>] worker_thread+0x12e/0x3b0 [<ffffffff81085f96>] kthread+0xe6/0xf0 [<ffffffff81570bac>] ret_from_fork+0x7c/0xb0 ---[ end trace 2d1577ec10cf80d0 ]--- It's because allocating/removing cgroup ID is not properly synchronized. The bug was introduced when we converted cgroup_ida to cgroup_idr. While synchronization is already done inside ida_simple_{get,remove}(), users are responsible for concurrent calls to idr_{alloc,remove}(). [mhocko@suse.cz: ported to 3.12] Fixes: 4e96ee8e ("cgroup: convert cgroup_ida to cgroup_idr") Cc: <stable@vger.kernel.org> #3.12+ Reported-by:
Michal Hocko <mhocko@suse.cz> Signed-off-by:
Li Zefan <lizefan@huawei.com> Signed-off-by:
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Russell King authored
commit 571b1437 upstream. If the kernel is loaded higher in physical memory than normal, and we calculate PHYS_OFFSET higher than the start of RAM, this leads to boot problems as we attempt to map part of this RAM into userspace. Rather than struggle with this, just truncate the mapping. Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by:
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Magnus Damm authored
commit 6d7d5da7 upstream. Use CONFIG_ARCH_PHYS_ADDR_T_64BIT to determine if ignoring or truncating of memory banks is neccessary. This may be needed in the case of 64-bit memory bank addresses but when phys_addr_t is kept 32-bit. Signed-off-by:
Magnus Damm <damm@opensource.se> Signed-off-by:
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Trond Myklebust authored
commit b7e63a10 upstream. nfs4_release_lockowner needs to set the rpc_message reply to point to the nfs4_sequence_res in order to avoid another Oopsable situation in nfs41_assign_slot. Fixes: fbd4bfd1 (NFS: Add nfs4_sequence calls for RELEASE_LOCKOWNER) Cc: stable@vger.kernel.org # 3.12+ Signed-off-by:
Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by:
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Christoffer Dall authored
commit 4d9c5b89 upstream. The stage-2 memory attributes are distinct from the Hyp memory attributes and the Stage-1 memory attributes. We were using the stage-1 memory attributes for stage-2 mappings causing device mappings to be mapped as normal memory. Add the S2 equivalent defines for memory attributes and fix the comments explaining the defines while at it. Add a prot_pte_s2 field to the mem_type struct and fill out the field for device mappings accordingly. Cc: <stable@vger.kernel.org> [3.12] Acked-by:
Marc Zyngier <marc.zyngier@arm.com> Acked-by:
Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by:
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Emmanuel Grumbach authored
commit 1e929199 upstream. Since the statistics handler is asynchrous, it can very well be that we will handle the statistics (hence the RSSI fluctuation) when we already disassociated. Don't WARN on this case. This solves: https://bugzilla.redhat.com/show_bug.cgi?id=1071998 Cc: <stable@vger.kernel.org> [3.10+] Fixes: 2b76ef13 ("iwlwifi: mvm: implement reduced Tx power") Reviewed-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by:
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- 24 Mar, 2014 10 commits
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Jiri Slaby authored
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Zhang Rui authored
commit 89935315 upstream. Before commit b355cee8 (ACPI / resources: ignore invalid ACPI device resources), if acpi_dev_resource_memory()/acpi_dev_resource_io() returns false, it means the the resource is not a memeory/IO resource. But after commit b355cee8, those functions return false if the given memory/IO resource entry is invalid (the length of the resource is zero). This breaks pnpacpi_allocated_resource(), because it now recognizes the invalid memory/io resources as resources of unknown type. Thus users see confusing warning messages on machines with zero length ACPI memory/IO resources. Fix the problem by rearranging pnpacpi_allocated_resource() so that it calls acpi_dev_resource_memory() for memory type and IO type resources only, respectively. Fixes: b355cee8 (ACPI / resources: ignore invalid ACPI device resources) Signed-off-by:
Zhang Rui <rui.zhang@intel.com> Reported-and-tested-by:
Markus Trippelsdorf <markus@trippelsdorf.de> Reported-and-tested-by:
Julian Wollrath <jwollrath@web.de> Reported-and-tested-by:
Paul Bolle <pebolle@tiscali.nl> [rjw: Changelog] Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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Steve Capper authored
commit 84fe6826 upstream. Page table entries on ARM64 are 64 bits, and some pte functions such as pte_dirty return a bitwise-and of a flag with the pte value. If the flag to be tested resides in the upper 32 bits of the pte, then we run into the danger of the result being dropped if downcast. For example: gather_stats(page, md, pte_dirty(*pte), 1); where pte_dirty(*pte) is downcast to an int. This patch adds a double logical invert to all the pte_ accessors to ensure predictable downcasting. Signed-off-by:
Steve Capper <steve.capper@linaro.org> [steve.capper@linaro.org: rebased patch to leave pte_write alone to allow for merge with 3.13 stable] Signed-off-by:
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Nicholas Bellinger authored
commit 5837c80e upstream. This patch addresses a bug in bio_integrity_verify() code that has been causing DIF READ verify operations to be silently skipped. The issue is that bio->bi_idx will have been incremented within bio_advance() code in the normal blk_update_request() -> req_bio_endio() completion path, and bio_integrity_verify() is using bio_for_each_segment() which starts the bio segment walk at the current bio->bi_idx. So instead use bio_for_each_segment_all() to always start the bio segment walk from zero, regardless of the current bio->bi_idx value after bio_advance() has been called. (Context change for v3.10.y -> v3.13.y code - nab) Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by:
Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by:
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Qais Yousef authored
commit 87c99203 upstream. The file uses u16 type but doesn't include its definition explicitly I was getting this error when including this header in my driver: arch/mips/include/asm/mipsregs.h:644:33: error: unknown type name ‘u16’ Signed-off-by:
Qais Yousef <qais.yousef@imgtec.com> Reviewed-by:
Steven J. Hill <Steven.Hill@imgtec.com> Acked-by:
David Daney <david.daney@cavium.com> Signed-off-by:
John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/6212/Signed-off-by:
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Roman Volkov authored
commit 1f91ecc1 upstream. When selecting the audio output destinations (headphones, FP headphones, multichannel output), the channel routing should be changed depending on what destination selected. Also unnecessary I2S channels are digitally muted. This function called when the user selects the destination in the ALSA mixer. Signed-off-by:
Roman Volkov <v1ron@mail.ru> Signed-off-by:
Clemens Ladisch <clemens@ladisch.de> Signed-off-by:
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Suresh Siddha authored
commit 731bd6a9 upstream. For non-eager fpu mode, thread's fpu state is allocated during the first fpu usage (in the context of device not available exception). This (math_state_restore()) can be a blocking call and hence we enable interrupts (which were originally disabled when the exception happened), allocate memory and disable interrupts etc. But the eager-fpu mode, call's the same math_state_restore() from kernel_fpu_end(). The assumption being that tsk_used_math() is always set for the eager-fpu mode and thus avoid the code path of enabling interrupts, allocating fpu state using blocking call and disable interrupts etc. But the below issue was noticed by Maarten Baert, Nate Eldredge and few others: If a user process dumps core on an ecrypt fs while aesni-intel is loaded, we get a BUG() in __find_get_block() complaining that it was called with interrupts disabled; then all further accesses to our ecrypt fs hang and we have to reboot. The aesni-intel code (encrypting the core file that we are writing) needs the FPU and quite properly wraps its code in kernel_fpu_{begin,end}(), the latter of which calls math_state_restore(). So after kernel_fpu_end(), interrupts may be disabled, which nobody seems to expect, and they stay that way until we eventually get to __find_get_block() which barfs. For eager fpu, most the time, tsk_used_math() is true. At few instances during thread exit, signal return handling etc, tsk_used_math() might be false. In kernel_fpu_end(), for eager-fpu, call math_state_restore() only if tsk_used_math() is set. Otherwise, don't bother. Kernel code path which cleared tsk_used_math() knows what needs to be done with the fpu state. Reported-by:
Maarten Baert <maarten-baert@hotmail.com> Reported-by:
Nate Eldredge <nate@thatsmathematics.com> Suggested-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
Suresh Siddha <sbsiddha@gmail.com> Link: http://lkml.kernel.org/r/1391410583.3801.6.camel@europa Cc: George Spelvin <linux@horizon.com> Signed-off-by:
H. Peter Anvin <hpa@linux.intel.com> Signed-off-by:
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Ales Novak authored
commit b12bb60d upstream. If the initialization of storvsc fails, the storvsc_device_destroy() causes NULL pointer dereference. storvsc_bus_scan() scsi_scan_target() __scsi_scan_target() scsi_probe_and_add_lun(hostdata=NULL) scsi_alloc_sdev(hostdata=NULL) sdev->hostdata = hostdata now the host allocation fails __scsi_remove_device(sdev) calls sdev->host->hostt->slave_destroy() == storvsc_device_destroy(sdev) access of sdev->hostdata->request_mempool Signed-off-by:
Ales Novak <alnovak@suse.cz> Signed-off-by:
Thomas Abraham <tabraham@suse.com> Reviewed-by:
K. Y. Srinivasan <kys@microsoft.com> Signed-off-by:
James Bottomley <JBottomley@Parallels.com> Signed-off-by:
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Chad Dupuis authored
commit f324777e upstream. This fixes requesting of the MSI-X vectors for the base response queue. The iteration in the for loop in qla24xx_enable_msix() was incorrect. We should only iterate of the first two MSI-X vectors and not the total number of MSI-X vectors that have given to the driver for this device from pci_enable_msix() in this function. Signed-off-by:
Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by:
Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by:
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Giridhar Malavali authored
commit b77ed25c upstream. Signed-off-by:
Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by:
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