ASoC: Add support and bcm2708 drivers for PCM5102A #24
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Thank you very much! |
koalo
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Sep 24, 2013
ASoC: Add support and bcm2708 drivers for PCM5102A
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Thank you for your very good work! |
koalo
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Nov 19, 2013
One of the problems that arise when converting dedicated custom threadpool to workqueue is that the shared worker pool used by workqueue anonimizes each worker making it more difficult to identify what the worker was doing on which target from the output of sysrq-t or debug dump from oops, BUG() and friends. For example, after writeback is converted to use workqueue instead of priviate thread pool, there's no easy to tell which backing device a writeback work item was working on at the time of task dump, which, according to our writeback brethren, is important in tracking down issues with a lot of mounted file systems on a lot of different devices. This patchset implements a way for a work function to mark its execution instance so that task dump of the worker task includes information to indicate what the work item was doing. An example WARN dump would look like the following. WARNING: at fs/fs-writeback.c:1015 bdi_writeback_workfn+0x2b4/0x3c0() Modules linked in: CPU: 0 Pid: 28 Comm: kworker/u18:0 Not tainted 3.9.0-rc1-work+ #24 Hardware name: empty empty/S3992, BIOS 080011 10/26/2007 Workqueue: writeback bdi_writeback_workfn (flush-8:16) ffffffff820a3a98 ffff88015b927cb8 ffffffff81c61855 ffff88015b927cf8 ffffffff8108f500 0000000000000000 ffff88007a171948 ffff88007a1716b0 ffff88015b49df00 ffff88015b8d3940 0000000000000000 ffff88015b927d08 Call Trace: [<ffffffff81c61855>] dump_stack+0x19/0x1b [<ffffffff8108f500>] warn_slowpath_common+0x70/0xa0 ... This patch: Implement probe_kthread_data() which returns kthread_data if accessible. The function is equivalent to kthread_data() except that the specified @task may not be a kthread or its vfork_done is already cleared rendering struct kthread inaccessible. In the former case, probe_kthread_data() may return any value. In the latter, NULL. This will be used to safely print debug information without affecting synchronization in the normal paths. Workqueue debug info printing on dump_stack() and friends will make use of it. Signed-off-by: Tejun Heo <[email protected]> Cc: Oleg Nesterov <[email protected]> Acked-by: Jan Kara <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Peter Zijlstra <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
koalo
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Nov 19, 2013
Writeback has been recently converted to use workqueue instead of its private thread pool implementation. One negative side effect of this conversion is that there's no easy to tell which backing device a writeback work item was working on at the time of task dump, be it sysrq-t, BUG, WARN or whatever, which, according to our writeback brethren, is important in tracking down issues with a lot of mounted file systems on a lot of different devices. This patch restores that information using the new worker description facility. bdi_writeback_workfn() calls set_work_desc() to identify which bdi it's working on. The description is printed out together with the worqueue name and worker function as in the following example dump. WARNING: at fs/fs-writeback.c:1015 bdi_writeback_workfn+0x2b4/0x3c0() Modules linked in: Pid: 28, comm: kworker/u18:0 Not tainted 3.9.0-rc1-work+ #24 empty empty/S3992 Workqueue: writeback bdi_writeback_workfn (flush-8:16) ffffffff820a3a98 ffff88015b927cb8 ffffffff81c61855 ffff88015b927cf8 ffffffff8108f500 0000000000000000 ffff88007a171948 ffff88007a1716b0 ffff88015b49df00 ffff88015b8d3940 0000000000000000 ffff88015b927d08 Call Trace: [<ffffffff81c61855>] dump_stack+0x19/0x1b [<ffffffff8108f500>] warn_slowpath_common+0x70/0xa0 [<ffffffff8108f54a>] warn_slowpath_null+0x1a/0x20 [<ffffffff81200144>] bdi_writeback_workfn+0x2b4/0x3c0 [<ffffffff810b4c87>] process_one_work+0x1d7/0x660 [<ffffffff810b5c72>] worker_thread+0x122/0x380 [<ffffffff810bdfea>] kthread+0xea/0xf0 [<ffffffff81c6cedc>] ret_from_fork+0x7c/0xb0 Signed-off-by: Tejun Heo <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Peter Zijlstra <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
koalo
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Apr 16, 2014
commit a0c20fb upstream. After commit e9e4ea7 "net: smc91x: dont't use SMC_outw for fixing up halfword-aligned data" The Versatile SMSC LAN91C111 is crashing like this: ------------[ cut here ]------------ kernel BUG at /home/linus/linux/drivers/net/ethernet/smsc/smc91x.c:599! Internal error: Oops - BUG: 0 [#1] ARM Modules linked in: CPU: 0 PID: 43 Comm: udhcpc Not tainted 3.13.0-rc1+ #24 task: c6ccfaa0 ti: c6cd0000 task.ti: c6cd0000 PC is at smc_hardware_send_pkt+0x198/0x22c LR is at smc_hardware_send_pkt+0x24/0x22c pc : [<c01be324>] lr : [<c01be1b0>] psr: 20000013 sp : c6cd1d08 ip : 00000001 fp : 00000000 r10: c02adb08 r9 : 00000000 r8 : c6ced802 r7 : c786fba0 r6 : 00000146 r5 : c8800000 r4 : c78d6000 r3 : 0000000f r2 : 00000146 r1 : 00000000 r0 : 00000031 Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 0005317f Table: 06cf4000 DAC: 00000015 Process udhcpc (pid: 43, stack limit = 0xc6cd01c0) Stack: (0xc6cd1d08 to 0xc6cd2000) 1d00: 00000010 c8800000 c78d6000 c786fba0 c78d6000 c01be868 1d20: c01be7a4 00004000 00000000 c786fba0 c6c12b80 c0208554 000004d0 c780fc60 1d40: 00000220 c01fb734 00000000 00000000 00000000 c6c9a440 c6c12b80 c78d6000 1d60: c786fba0 c6c9a440 00000000 c021d1d8 00000000 00000000 c6c12b80 c78d6000 1d80: c786fba0 00000001 c6c9a440 c02087f8 c6c9a4a0 00080008 00000000 00000000 1da0: c78d6000 c786fba0 c78d6000 00000138 00000000 00000000 00000000 00000000 1dc0: 00000000 c027ba74 00000138 00000138 00000001 00000010 c6cedc00 00000000 1de0: 00000008 c7404400 c6cd1eec c6cd1f14 c067a73c c065c0b8 00000000 c067a740 1e00: 01ffffff 002040d0 00000000 00000000 00000000 00000000 00000000 ffffffff 1e20: 43004400 00110022 c6cdef20 c027ae8c c6ccfaa0 be82d65c 00000014 be82d3cc 1e40: 00000000 00000000 00000000 c01f2870 00000000 00000000 00000000 c6cd1e88 1e60: c6ccfaa0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1e80: 00000000 00000000 00000031 c7802310 c7802300 00000138 c7404400 c0771da0 1ea0: 00000000 c6cd1eec c7800340 00000138 be82d65c 00000014 be82d3cc c6cd1f08 1ec0: 00000014 00000000 c7404400 c7404400 00000138 c01f4628 c78d6000 00000000 1ee0: 00000000 be82d3cc 00000138 c6cd1f08 00000014 c6cd1ee4 00000001 00000000 1f00: 00000000 00000000 00080011 00000002 06000000 ffffffff 0000ffff 00000002 1f20: 06000000 ffffffff 0000ffff c00928c8 c065c520 c6cd1f58 00000003 c009299c 1f40: 00000003 c065c520 c7404400 00000000 c7404400 c01f2218 c78106b0 c7441cb0 1f60: 00000000 00000006 c06799fc 00000000 00000000 00000006 00000000 c01f3ee0 1f80: 00000000 00000000 be82d678 be82d65c 00000014 00000001 00000122 c00139c8 1fa0: c6cd0000 c0013840 be82d65c 00000014 00000006 be82d3cc 00000138 00000000 1fc0: be82d65c 00000014 00000001 00000122 00000000 00000000 00018cb1 00000000 1fe0: 00003801 be82d3a8 0003a0c7 b6e9af08 60000010 00000006 00000000 00000000 [<c01be324>] (smc_hardware_send_pkt+0x198/0x22c) from [<c01be868>] (smc_hard_start_xmit+0xc4/0x1e8) [<c01be868>] (smc_hard_start_xmit+0xc4/0x1e8) from [<c0208554>] (dev_hard_start_xmit+0x460/0x4cc) [<c0208554>] (dev_hard_start_xmit+0x460/0x4cc) from [<c021d1d8>] (sch_direct_xmit+0x94/0x18c) [<c021d1d8>] (sch_direct_xmit+0x94/0x18c) from [<c02087f8>] (dev_queue_xmit+0x238/0x42c) [<c02087f8>] (dev_queue_xmit+0x238/0x42c) from [<c027ba74>] (packet_sendmsg+0xbe8/0xd28) [<c027ba74>] (packet_sendmsg+0xbe8/0xd28) from [<c01f2870>] (sock_sendmsg+0x84/0xa8) [<c01f2870>] (sock_sendmsg+0x84/0xa8) from [<c01f4628>] (SyS_sendto+0xb8/0xdc) [<c01f4628>] (SyS_sendto+0xb8/0xdc) from [<c0013840>] (ret_fast_syscall+0x0/0x2c) Code: e3130002 1a000001 e3130001 0affffcd (e7f001f2) ---[ end trace 81104fe70e8da7fe ]--- Kernel panic - not syncing: Fatal exception in interrupt This is because the macro operations in smc91x.h defined for Versatile are missing SMC_outsw() as used in this commit. The Versatile needs and uses the same accessors as the other platforms in the first if(...) clause, just switch it to using that and we have one problem less to worry about. This includes a hunk of a patch from Will Deacon fixin the other 32bit platforms as well: Innokom, Ramses, PXA, PCM027. Checkpatch complains about spacing, but I have opted to follow the style of this .h-file. Cc: Russell King <[email protected]> Cc: Nicolas Pitre <[email protected]> Cc: Eric Miao <[email protected]> Cc: Jonathan Cameron <[email protected]> Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Linus Walleij <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
koalo
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Aug 4, 2014
Several people reported the warning: "kernel BUG at kernel/timer.c:729!" and the stack trace is: #7 [ffff880214d25c10] mod_timer+501 at ffffffff8106d905 #8 [ffff880214d25c50] br_multicast_del_pg.isra.20+261 at ffffffffa0731d25 [bridge] #9 [ffff880214d25c80] br_multicast_disable_port+88 at ffffffffa0732948 [bridge] #10 [ffff880214d25cb0] br_stp_disable_port+154 at ffffffffa072bcca [bridge] #11 [ffff880214d25ce8] br_device_event+520 at ffffffffa072a4e8 [bridge] #12 [ffff880214d25d18] notifier_call_chain+76 at ffffffff8164aafc #13 [ffff880214d25d50] raw_notifier_call_chain+22 at ffffffff810858f6 #14 [ffff880214d25d60] call_netdevice_notifiers+45 at ffffffff81536aad #15 [ffff880214d25d80] dev_close_many+183 at ffffffff81536d17 #16 [ffff880214d25dc0] rollback_registered_many+168 at ffffffff81537f68 #17 [ffff880214d25de8] rollback_registered+49 at ffffffff81538101 #18 [ffff880214d25e10] unregister_netdevice_queue+72 at ffffffff815390d8 #19 [ffff880214d25e30] __tun_detach+272 at ffffffffa074c2f0 [tun] #20 [ffff880214d25e88] tun_chr_close+45 at ffffffffa074c4bd [tun] #21 [ffff880214d25ea8] __fput+225 at ffffffff8119b1f1 #22 [ffff880214d25ef0] ____fput+14 at ffffffff8119b3fe #23 [ffff880214d25f00] task_work_run+159 at ffffffff8107cf7f #24 [ffff880214d25f30] do_notify_resume+97 at ffffffff810139e1 #25 [ffff880214d25f50] int_signal+18 at ffffffff8164f292 this is due to I forgot to check if mp->timer is armed in br_multicast_del_pg(). This bug is introduced by commit 9f00b2e (bridge: only expire the mdb entry when query is received). Same for __br_mdb_del(). Tested-by: poma <[email protected]> Reported-by: LiYonghua <[email protected]> Reported-by: Robert Hancock <[email protected]> Cc: Herbert Xu <[email protected]> Cc: Stephen Hemminger <[email protected]> Cc: "David S. Miller" <[email protected]> Signed-off-by: Cong Wang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
koalo
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Aug 4, 2014
[ Upstream commit a0c20fb ] After commit e9e4ea7 "net: smc91x: dont't use SMC_outw for fixing up halfword-aligned data" The Versatile SMSC LAN91C111 is crashing like this: ------------[ cut here ]------------ kernel BUG at /home/linus/linux/drivers/net/ethernet/smsc/smc91x.c:599! Internal error: Oops - BUG: 0 [#1] ARM Modules linked in: CPU: 0 PID: 43 Comm: udhcpc Not tainted 3.13.0-rc1+ #24 task: c6ccfaa0 ti: c6cd0000 task.ti: c6cd0000 PC is at smc_hardware_send_pkt+0x198/0x22c LR is at smc_hardware_send_pkt+0x24/0x22c pc : [<c01be324>] lr : [<c01be1b0>] psr: 20000013 sp : c6cd1d08 ip : 00000001 fp : 00000000 r10: c02adb08 r9 : 00000000 r8 : c6ced802 r7 : c786fba0 r6 : 00000146 r5 : c8800000 r4 : c78d6000 r3 : 0000000f r2 : 00000146 r1 : 00000000 r0 : 00000031 Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 0005317f Table: 06cf4000 DAC: 00000015 Process udhcpc (pid: 43, stack limit = 0xc6cd01c0) Stack: (0xc6cd1d08 to 0xc6cd2000) 1d00: 00000010 c8800000 c78d6000 c786fba0 c78d6000 c01be868 1d20: c01be7a4 00004000 00000000 c786fba0 c6c12b80 c0208554 000004d0 c780fc60 1d40: 00000220 c01fb734 00000000 00000000 00000000 c6c9a440 c6c12b80 c78d6000 1d60: c786fba0 c6c9a440 00000000 c021d1d8 00000000 00000000 c6c12b80 c78d6000 1d80: c786fba0 00000001 c6c9a440 c02087f8 c6c9a4a0 00080008 00000000 00000000 1da0: c78d6000 c786fba0 c78d6000 00000138 00000000 00000000 00000000 00000000 1dc0: 00000000 c027ba74 00000138 00000138 00000001 00000010 c6cedc00 00000000 1de0: 00000008 c7404400 c6cd1eec c6cd1f14 c067a73c c065c0b8 00000000 c067a740 1e00: 01ffffff 002040d0 00000000 00000000 00000000 00000000 00000000 ffffffff 1e20: 43004400 00110022 c6cdef20 c027ae8c c6ccfaa0 be82d65c 00000014 be82d3cc 1e40: 00000000 00000000 00000000 c01f2870 00000000 00000000 00000000 c6cd1e88 1e60: c6ccfaa0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1e80: 00000000 00000000 00000031 c7802310 c7802300 00000138 c7404400 c0771da0 1ea0: 00000000 c6cd1eec c7800340 00000138 be82d65c 00000014 be82d3cc c6cd1f08 1ec0: 00000014 00000000 c7404400 c7404400 00000138 c01f4628 c78d6000 00000000 1ee0: 00000000 be82d3cc 00000138 c6cd1f08 00000014 c6cd1ee4 00000001 00000000 1f00: 00000000 00000000 00080011 00000002 06000000 ffffffff 0000ffff 00000002 1f20: 06000000 ffffffff 0000ffff c00928c8 c065c520 c6cd1f58 00000003 c009299c 1f40: 00000003 c065c520 c7404400 00000000 c7404400 c01f2218 c78106b0 c7441cb0 1f60: 00000000 00000006 c06799fc 00000000 00000000 00000006 00000000 c01f3ee0 1f80: 00000000 00000000 be82d678 be82d65c 00000014 00000001 00000122 c00139c8 1fa0: c6cd0000 c0013840 be82d65c 00000014 00000006 be82d3cc 00000138 00000000 1fc0: be82d65c 00000014 00000001 00000122 00000000 00000000 00018cb1 00000000 1fe0: 00003801 be82d3a8 0003a0c7 b6e9af08 60000010 00000006 00000000 00000000 [<c01be324>] (smc_hardware_send_pkt+0x198/0x22c) from [<c01be868>] (smc_hard_start_xmit+0xc4/0x1e8) [<c01be868>] (smc_hard_start_xmit+0xc4/0x1e8) from [<c0208554>] (dev_hard_start_xmit+0x460/0x4cc) [<c0208554>] (dev_hard_start_xmit+0x460/0x4cc) from [<c021d1d8>] (sch_direct_xmit+0x94/0x18c) [<c021d1d8>] (sch_direct_xmit+0x94/0x18c) from [<c02087f8>] (dev_queue_xmit+0x238/0x42c) [<c02087f8>] (dev_queue_xmit+0x238/0x42c) from [<c027ba74>] (packet_sendmsg+0xbe8/0xd28) [<c027ba74>] (packet_sendmsg+0xbe8/0xd28) from [<c01f2870>] (sock_sendmsg+0x84/0xa8) [<c01f2870>] (sock_sendmsg+0x84/0xa8) from [<c01f4628>] (SyS_sendto+0xb8/0xdc) [<c01f4628>] (SyS_sendto+0xb8/0xdc) from [<c0013840>] (ret_fast_syscall+0x0/0x2c) Code: e3130002 1a000001 e3130001 0affffcd (e7f001f2) ---[ end trace 81104fe70e8da7fe ]--- Kernel panic - not syncing: Fatal exception in interrupt This is because the macro operations in smc91x.h defined for Versatile are missing SMC_outsw() as used in this commit. The Versatile needs and uses the same accessors as the other platforms in the first if(...) clause, just switch it to using that and we have one problem less to worry about. This includes a hunk of a patch from Will Deacon fixin the other 32bit platforms as well: Innokom, Ramses, PXA, PCM027. Checkpatch complains about spacing, but I have opted to follow the style of this .h-file. Cc: Russell King <[email protected]> Cc: Nicolas Pitre <[email protected]> Cc: Eric Miao <[email protected]> Cc: Jonathan Cameron <[email protected]> Cc: [email protected] Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Linus Walleij <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
koalo
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Aug 4, 2014
…urces. commit 60aaf93 upstream. and commit 0c775d5 When we change group_thread_cnt from sysfs entry, it can OOPS. The kernel messages are: [ 135.299021] BUG: unable to handle kernel NULL pointer dereference at (null) [ 135.299073] IP: [<ffffffff815188ab>] handle_active_stripes+0x32b/0x440 [ 135.299107] PGD 0 [ 135.299122] Oops: 0000 [#1] SMP [ 135.299144] Modules linked in: netconsole e1000e ptp pps_core [ 135.299188] CPU: 3 PID: 2225 Comm: md0_raid5 Not tainted 3.12.0+ #24 [ 135.299214] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./To be filled by O.E.M., BIOS 080015 11/09/2011 [ 135.299255] task: ffff8800b9638f80 ti: ffff8800b77a4000 task.ti: ffff8800b77a4000 [ 135.299283] RIP: 0010:[<ffffffff815188ab>] [<ffffffff815188ab>] handle_active_stripes+0x32b/0x440 [ 135.299323] RSP: 0018:ffff8800b77a5c48 EFLAGS: 00010002 [ 135.299344] RAX: ffff880037bb5c70 RBX: 0000000000000000 RCX: 0000000000000008 [ 135.299371] RDX: ffff880037bb5cb8 RSI: 0000000000000001 RDI: ffff880037bb5c00 [ 135.299398] RBP: ffff8800b77a5d08 R08: 0000000000000001 R09: 0000000000000000 [ 135.299425] R10: ffff8800b77a5c98 R11: 00000000ffffffff R12: ffff880037bb5c00 [ 135.299452] R13: 0000000000000000 R14: 0000000000000000 R15: ffff880037bb5c70 [ 135.299479] FS: 0000000000000000(0000) GS:ffff88013fd80000(0000) knlGS:0000000000000000 [ 135.299510] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 135.299532] CR2: 0000000000000000 CR3: 0000000001c0b000 CR4: 00000000000407e0 [ 135.299559] Stack: [ 135.299570] ffff8800b77a5c88 ffffffff8107383e ffff8800b77a5c88 ffff880037a64300 [ 135.299611] 000000000000ec08 ffff880037bb5cb8 ffff8800b77a5c98 ffffffffffffffd8 [ 135.299654] 000000000000ec08 ffff880037bb5c60 ffff8800b77a5c98 ffff8800b77a5c98 [ 135.299696] Call Trace: [ 135.299711] [<ffffffff8107383e>] ? __wake_up+0x4e/0x70 [ 135.299733] [<ffffffff81518f88>] raid5d+0x4c8/0x680 [ 135.299756] [<ffffffff817174ed>] ? schedule_timeout+0x15d/0x1f0 [ 135.299781] [<ffffffff81524c9f>] md_thread+0x11f/0x170 [ 135.299804] [<ffffffff81069cd0>] ? wake_up_bit+0x40/0x40 [ 135.299826] [<ffffffff81524b80>] ? md_rdev_init+0x110/0x110 [ 135.299850] [<ffffffff81069656>] kthread+0xc6/0xd0 [ 135.299871] [<ffffffff81069590>] ? kthread_freezable_should_stop+0x70/0x70 [ 135.299899] [<ffffffff81722ffc>] ret_from_fork+0x7c/0xb0 [ 135.299923] [<ffffffff81069590>] ? kthread_freezable_should_stop+0x70/0x70 [ 135.299951] Code: ff ff ff 0f 84 d7 fe ff ff e9 5c fe ff ff 66 90 41 8b b4 24 d8 01 00 00 45 31 ed 85 f6 0f 8e 7b fd ff ff 49 8b 9c 24 d0 01 00 00 <48> 3b 1b 49 89 dd 0f 85 67 fd ff ff 48 8d 43 28 31 d2 eb 17 90 [ 135.300005] RIP [<ffffffff815188ab>] handle_active_stripes+0x32b/0x440 [ 135.300005] RSP <ffff8800b77a5c48> [ 135.300005] CR2: 0000000000000000 [ 135.300005] ---[ end trace 504854e5bb7562ed ]--- [ 135.300005] Kernel panic - not syncing: Fatal exception This is because raid5d() can be running when the multi-thread resources are changed via system. We see need to provide locking. mddev->device_lock is suitable, but we cannot simple call alloc_thread_groups under this lock as we cannot allocate memory while holding a spinlock. So change alloc_thread_groups() to allocate and return the data structures, then raid5_store_group_thread_cnt() can take the lock while updating the pointers to the data structures. This fixes a bug introduced in 3.12 and so is suitable for the 3.12.x stable series. Fixes: b721420 Signed-off-by: Jianpeng Ma <[email protected]> Signed-off-by: NeilBrown <[email protected]> Reviewed-by: Shaohua Li <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Add support for PCM5102A codec from TI and related drivers for bcm2708 (Raspberry Pi); the driver is a rework of ESS9018 driver with the addition of 24bit audio capability