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2013-12-20staging: comedi: drivers: use comedi_dio_update_state() for simple casesH Hartley Sweeten
commit 97f4289ad08cffe55de06d4ac4f89ac540450aee upstream. [Split from original patch subject: "staging: comedi: drivers: use comedi_dio_update_state() for simple cases"] Use comedi_dio_update_state() to handle the boilerplate code to update the subdevice s->state for simple cases where the hardware is updated when any channel is modified. Also, fix a bug in the amplc_pc263 and amplc_pci263 drivers where the current state is not returned in data[1]. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20cxd2820r_core: fix sparse warningsHans Verkuil
commit 0db3fa2741ad8371c21b3a6785416a4afc0cc1d4 upstream. drivers/media/dvb-frontends/cxd2820r_core.c:34:32: error: cannot size expression drivers/media/dvb-frontends/cxd2820r_core.c:68:32: error: cannot size expression Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Antti Palosaari <crope@iki.fi> Reviewed-by: Antti Palosaari <crope@iki.fi> Reviewed-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com> Cc: Frederik Himpe <fhimpe@telenet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20HID: kye: Fix missing break in kye_report_fixup()Ben Hutchings
commit 0a5f99cfff2297f6c350b7f54878cbbf1b1253d5 upstream. The change to support Genius Manticore Keyboard also changed behaviour for Genius Gx Imperator Keyboard, as there is no break between the cases. This is presumably a mistake. Reported by Coverity as CID 1134029. Fixes: 4a2c94c9b6c0 ('HID: kye: Add report fixup for Genius Manticore Keyboard') Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20HID: kye: Add report fixup for Genius Manticore KeyboardBenjamin Tissoires
commit 4a2c94c9b6c03af61b04993340bd9559e2277de4 upstream. Genius Manticore Keyboard presents the same problem in its report descriptors than Genius Gila Gaming Mouse and Genius Imperator Keyboard. Use the same fixup. Reported-and-tested-by: Adam Kulagowski <fidor@fidor.org> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20dm thin: allow pool in read-only mode to transition to read-write modeJoe Thornber
commit 9b7aaa64f96f7ca280d75326fca42f42017b89ef upstream. A thin-pool may be in read-only mode because the pool's data or metadata space was exhausted. To allow for recovery, by adding more space to the pool, we must allow a pool to transition from PM_READ_ONLY to PM_WRITE mode. Otherwise, running out of space will render the pool permanently read-only. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20dm thin: re-establish read-only state when switching to fail modeJoe Thornber
commit 5383ef3a929a1366e2ced45cd6d74be7aa2a2281 upstream. If the thin-pool transitioned to fail mode and the thin-pool's table were reloaded for some reason: the new table's default pool mode would be read-write, though it will transition to fail mode during resume. When the pool mode transitions directly from PM_WRITE to PM_FAIL we need to re-establish the intermediate read-only state in both the metadata and persistent-data block manager (as is usually done with the normal pool mode transition sequence: PM_WRITE -> PM_READ_ONLY -> PM_FAIL). Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20dm thin: always fallback the pool mode if commit failsJoe Thornber
commit 020cc3b5e28c2e24f59f53a9154faf08564f308e upstream. Rename commit_or_fallback() to commit(). Now all previous calls to commit() will trigger the pool mode to fallback if the commit fails. Also, check the error returned from commit() in alloc_data_block(). Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20dm thin: switch to read-only mode if metadata space is exhaustedMike Snitzer
commit 4a02b34e0cf1d0d0dd3737702841da4bf615a50a upstream. Switch the thin pool to read-only mode in alloc_data_block() if dm_pool_alloc_data_block() fails because the pool's metadata space is exhausted. Differentiate between data and metadata space in messages about no free space available. This issue was noticed with the device-mapper-test-suite using: dmtest run --suite thin-provisioning -n /exhausting_metadata_space_causes_fail_mode/ The quantity of errors logged in this case must be reduced. before patch: device-mapper: thin: 253:4: reached low water mark for metadata device: sending event. device-mapper: space map metadata: unable to allocate new metadata block device-mapper: space map common: dm_tm_shadow_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: space map common: dm_tm_shadow_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: space map common: dm_tm_shadow_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: space map common: dm_tm_shadow_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: space map common: dm_tm_shadow_block() failed <snip ... these repeat for a _very_ long while ... > device-mapper: space map metadata: unable to allocate new metadata block device-mapper: thin: 253:4: commit failed: error = -28 device-mapper: thin: 253:4: switching pool to read-only mode after patch: device-mapper: thin: 253:4: reached low water mark for metadata device: sending event. device-mapper: space map metadata: unable to allocate new metadata block device-mapper: thin: 253:4: no free metadata space available. device-mapper: thin: 253:4: switching pool to read-only mode Signed-off-by: Mike Snitzer <snitzer@redhat.com> Acked-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20dm thin: switch to read only mode if a mapping insert failsJoe Thornber
commit fafc7a815e40255d24e80a1cb7365892362fa398 upstream. Switch the thin pool to read-only mode when dm_thin_insert_block() fails since there is little reason to expect the cause of the failure to be resolved without further action by user space. This issue was noticed with the device-mapper-test-suite using: dmtest run --suite thin-provisioning -n /exhausting_metadata_space_causes_fail_mode/ The quantity of errors logged in this case must be reduced. before patch: device-mapper: thin: dm_thin_insert_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: thin: dm_thin_insert_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: thin: dm_thin_insert_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: thin: dm_thin_insert_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: thin: dm_thin_insert_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: thin: dm_thin_insert_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: thin: dm_thin_insert_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: thin: dm_thin_insert_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: thin: dm_thin_insert_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: thin: dm_thin_insert_block() failed device-mapper: space map metadata: unable to allocate new metadata block device-mapper: space map metadata: unable to allocate new metadata block device-mapper: space map metadata: unable to allocate new metadata block device-mapper: space map metadata: unable to allocate new metadata block device-mapper: space map metadata: unable to allocate new metadata block device-mapper: space map metadata: unable to allocate new metadata block <snip ... these repeat for a long while ... > device-mapper: space map metadata: unable to allocate new metadata block device-mapper: space map common: dm_tm_shadow_block() failed device-mapper: thin: 253:4: no free metadata space available. device-mapper: thin: 253:4: switching pool to read-only mode after patch: device-mapper: space map metadata: unable to allocate new metadata block device-mapper: thin: 253:4: dm_thin_insert_block() failed: error = -28 device-mapper: thin: 253:4: switching pool to read-only mode Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20dm table: fail dm_table_create on dm_round_up overflowMikulas Patocka
commit 5b2d06576c5410c10d95adfd5c4d8b24de861d87 upstream. The dm_round_up function may overflow to zero. In this case, dm_table_create() must fail rather than go on to allocate an empty array with alloc_targets(). This fixes a possible memory corruption that could be caused by passing too large a number in "param->target_count". Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20dm space map: disallow decrementing a reference count below zeroJoe Thornber
commit 5b564d80f8bc21094c0cd2b19b679d983aabcc29 upstream. The old behaviour, returning -EINVAL if a ref_count of 0 would be decremented, was removed in commit f722063 ("dm space map: optimise sm_ll_dec and sm_ll_inc"). To fix this regression we return an error code from the mutator function pointer passed to sm_ll_mutate() and have dec_ref_count() return -EINVAL if the old ref_count is 0. Add a DMERR to reflect the potential seriousness of this error. Also, add missing dm_tm_unlock() to sm_ll_mutate()'s error path. With this fix the following dmts regression test now passes: dmtest run --suite cache -n /metadata_use_kernel/ The next patch fixes the higher-level dm-array code that exposed this regression. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20dm space map metadata: return on failure in sm_metadata_new_blockMike Snitzer
commit f62b6b8f498658a9d537c7d380e9966f15e1b2a1 upstream. Commit 2fc48021f4afdd109b9e52b6eef5db89ca80bac7 ("dm persistent metadata: add space map threshold callback") introduced a regression to the metadata block allocation path that resulted in errors being ignored. This regression was uncovered by running the following device-mapper-test-suite test: dmtest run --suite thin-provisioning -n /exhausting_metadata_space_causes_fail_mode/ The ignored error codes in sm_metadata_new_block() could crash the kernel through use of either the dm-thin or dm-cache targets, e.g.: device-mapper: thin: 253:4: reached low water mark for metadata device: sending event. device-mapper: space map metadata: unable to allocate new metadata block general protection fault: 0000 [#1] SMP ... Workqueue: dm-thin do_worker [dm_thin_pool] task: ffff880035ce2ab0 ti: ffff88021a054000 task.ti: ffff88021a054000 RIP: 0010:[<ffffffffa0331385>] [<ffffffffa0331385>] metadata_ll_load_ie+0x15/0x30 [dm_persistent_data] RSP: 0018:ffff88021a055a68 EFLAGS: 00010202 RAX: 003fc8243d212ba0 RBX: ffff88021a780070 RCX: ffff88021a055a78 RDX: ffff88021a055a78 RSI: 0040402222a92a80 RDI: ffff88021a780070 RBP: ffff88021a055a68 R08: ffff88021a055ba4 R09: 0000000000000010 R10: 0000000000000000 R11: 00000002a02e1000 R12: ffff88021a055ad4 R13: 0000000000000598 R14: ffffffffa0338470 R15: ffff88021a055ba4 FS: 0000000000000000(0000) GS:ffff88033fca0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007f467c0291b8 CR3: 0000000001a0b000 CR4: 00000000000007e0 Stack: ffff88021a055ab8 ffffffffa0332020 ffff88021a055b30 0000000000000001 ffff88021a055b30 0000000000000000 ffff88021a055b18 0000000000000000 ffff88021a055ba4 ffff88021a055b98 ffff88021a055ae8 ffffffffa033304c Call Trace: [<ffffffffa0332020>] sm_ll_lookup_bitmap+0x40/0xa0 [dm_persistent_data] [<ffffffffa033304c>] sm_metadata_count_is_more_than_one+0x8c/0xc0 [dm_persistent_data] [<ffffffffa0333825>] dm_tm_shadow_block+0x65/0x110 [dm_persistent_data] [<ffffffffa0331b00>] sm_ll_mutate+0x80/0x300 [dm_persistent_data] [<ffffffffa0330e60>] ? set_ref_count+0x10/0x10 [dm_persistent_data] [<ffffffffa0331dba>] sm_ll_inc+0x1a/0x20 [dm_persistent_data] [<ffffffffa0332270>] sm_disk_new_block+0x60/0x80 [dm_persistent_data] [<ffffffff81520036>] ? down_write+0x16/0x40 [<ffffffffa001e5c4>] dm_pool_alloc_data_block+0x54/0x80 [dm_thin_pool] [<ffffffffa001b23c>] alloc_data_block+0x9c/0x130 [dm_thin_pool] [<ffffffffa001c27e>] provision_block+0x4e/0x180 [dm_thin_pool] [<ffffffffa001fe9a>] ? dm_thin_find_block+0x6a/0x110 [dm_thin_pool] [<ffffffffa001c57a>] process_bio+0x1ca/0x1f0 [dm_thin_pool] [<ffffffff8111e2ed>] ? mempool_free+0x8d/0xa0 [<ffffffffa001d755>] process_deferred_bios+0xc5/0x230 [dm_thin_pool] [<ffffffffa001d911>] do_worker+0x51/0x60 [dm_thin_pool] [<ffffffff81067872>] process_one_work+0x182/0x3b0 [<ffffffff81068c90>] worker_thread+0x120/0x3a0 [<ffffffff81068b70>] ? manage_workers+0x160/0x160 [<ffffffff8106eb2e>] kthread+0xce/0xe0 [<ffffffff8106ea60>] ? kthread_freezable_should_stop+0x70/0x70 [<ffffffff8152af6c>] ret_from_fork+0x7c/0xb0 [<ffffffff8106ea60>] ? kthread_freezable_should_stop+0x70/0x70 [<ffffffff8152af6c>] ret_from_fork+0x7c/0xb0 [<ffffffff8106ea60>] ? kthread_freezable_should_stop+0x70/0x70 Signed-off-by: Mike Snitzer <snitzer@redhat.com> Acked-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20dm delay: fix a possible deadlock due to shared workqueueMikulas Patocka
commit 718822c1c112dc99e0c72c8968ee1db9d9d910f0 upstream. The dm-delay target uses a shared workqueue for multiple instances. This can cause deadlock if two or more dm-delay targets are stacked on the top of each other. This patch changes dm-delay to use a per-instance workqueue. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20dm array: fix a reference counting bug in shadow_ablockJoe Thornber
commit ed9571f0cf1fe09d3506302610f3ccdfa1d22c4a upstream. An old array block could have its reference count decremented below zero when it is being replaced in the btree by a new array block. The fix is to increment the old ablock's reference count just before inserting a new ablock into the btree. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20dm stats: initialize read-only module parameterMikulas Patocka
commit 76f5bee5c3b45c617f91243e85547fc8f67bc678 upstream. The module parameter stats_current_allocated_bytes in dm-mod is read-only. This parameter informs the user about memory consumption. It is not supposed to be changed by the user. However, despite being read-only, this parameter can be set on modprobe or insmod command line: modprobe dm-mod stats_current_allocated_bytes=12345 The kernel doesn't expect that this variable can be non-zero at module initialization and if the user sets it, it results in warning. This patch initializes the variable in the module init routine, so that user-supplied value is ignored. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20dm snapshot: avoid snapshot space leak on crashMikulas Patocka
commit 230c83afdd9cd384348475bea1e14b80b3b6b1b8 upstream. There is a possible leak of snapshot space in case of crash. The reason for space leaking is that chunks in the snapshot device are allocated sequentially, but they are finished (and stored in the metadata) out of order, depending on the order in which copying finished. For example, supposed that the metadata contains the following records SUPERBLOCK METADATA (blocks 0 ... 250) DATA 0 DATA 1 DATA 2 ... DATA 250 Now suppose that you allocate 10 new data blocks 251-260. Suppose that copying of these blocks finish out of order (block 260 finished first and the block 251 finished last). Now, the snapshot device looks like this: SUPERBLOCK METADATA (blocks 0 ... 250, 260, 259, 258, 257, 256) DATA 0 DATA 1 DATA 2 ... DATA 250 DATA 251 DATA 252 DATA 253 DATA 254 DATA 255 METADATA (blocks 255, 254, 253, 252, 251) DATA 256 DATA 257 DATA 258 DATA 259 DATA 260 Now, if the machine crashes after writing the first metadata block but before writing the second metadata block, the space for areas DATA 250-255 is leaked, it contains no valid data and it will never be used in the future. This patch makes dm-snapshot complete exceptions in the same order they were allocated, thus fixing this bug. Note: when backporting this patch to the stable kernel, change the version field in the following way: * if version in the stable kernel is {1, 11, 1}, change it to {1, 12, 0} * if version in the stable kernel is {1, 10, 0} or {1, 10, 1}, change it to {1, 10, 2} Userspace reads the version to determine if the bug was fixed, so the version change is needed. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20dm bufio: initialize read-only module parametersMikulas Patocka
commit 4cb57ab4a2e61978f3a9b7d4f53988f30d61c27f upstream. Some module parameters in dm-bufio are read-only. These parameters inform the user about memory consumption. They are not supposed to be changed by the user. However, despite being read-only, these parameters can be set on modprobe or insmod command line, for example: modprobe dm-bufio current_allocated_bytes=12345 The kernel doesn't expect that these variables can be non-zero at module initialization and if the user sets them, it results in BUG. This patch initializes the variables in the module init routine, so that user-supplied values are ignored. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20media: af9035: unlock on error in af9035_i2c_master_xfer()Dan Carpenter
commit 3189ef0290dcc9f44782672fade35847cb30da00 upstream. We introduced a couple new error paths which are missing unlocks. Fixes: 7760e148350b ('[media] af9035: Don't use dynamic static allocation') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20media: af9035: add [0413:6a05] Leadtek WinFast DTV Dongle DualAntti Palosaari
commit 0c413d10515feae02cee967b31bb8afea8aa0d29 upstream. It is IT9135 dual design. Thanks to Michael Piko for reporting that! Reported-by: Michael Piko <michael@piko.com.au> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20media: wm8775: fix broken audio routingHans Verkuil
commit 3af41a337a5b270de3e65466a07f106ad97ad0c6 upstream. Commit 5aa9ae5ed5d449a85fbf7aac3d1fdc241c542a79 inverted the mute control state test in s_routing which caused the audio routing to fail. This broke ivtv support for the Hauppauge video/audio input bracket (which adds additional video and audio inputs) all the way back in kernel 2.6.36. This fix fixes the condition and it also removes a nonsense check on the balance control. Bisected-by: Rajil Saraswat <rajil.s@gmail.com> Signed-off-by: Andy Walls <awalls@md.metrocast.net> Reported-by: Rajil Saraswat <rajil.s@gmail.com> Tested-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20media: af9033: fix broken I2CAntti Palosaari
commit d18a88b1f535d627412b2a265d71b2f7d464860e upstream. Driver did not work anymore since I2C has gone broken due to recent commit: commit 37ebaf6891ee81687bb558e8375c0712d8264ed8 [media] dvb-frontends: Don't use dynamic static allocation Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20media: bttv: don't setup the controls if there are no video devicesHans Verkuil
commit f8e1b699a5504a2da05834c7cfdddb125a8ce088 upstream. The no_video flag was checked in all other cases except one. Calling v4l2_ctrl_handler_setup() if no_video is 1 will crash. This wasn't noticed before since there are only two card types that set no_video to 1, so this type of hardware is quite rare. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reported-by: Lorenz Röhrl <sheepshit@gmx.de> Tested-by: Lorenz Röhrl <sheepshit@gmx.de> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20media: tef6862/radio-tea5764: actually assign clamp resultHans Verkuil
commit 9ba6a91f19b8c118d11c549495fa4f7a20505d80 upstream. When adding frequency clamping to the tef6862 and radio-tea5764 drivers I forgot to actually *assign* the clamp result to the frequency. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reported-by: Hans Petter Selasky <hps@bitfrost.no> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20media: saa7164: fix return value check in saa7164_initdev()Wei Yongjun
commit 89f4d45b2752df5d222b5f63919ce59e2d8afaf4 upstream. In case of error, the function kthread_run() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20drm/radeon/atom: fix bus probes when hw_i2c is set (v2)Alex Deucher
commit ffd3d3361d583cb73fa65a5fed3a196ba6f261bb upstream. When probing the bus, we need to set the byte count to 0 rather than 1. v2: Don't count the first byte. bug: https://bugzilla.kernel.org/show_bug.cgi?id=66241 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20drm/radeon: fixup bad vram size on SIAlex Deucher
commit 0ca223b029a261e82fb2f50c52eb85d510f4260e upstream. Some boards seem to have garbage in the upper 16 bits of the vram size register. Check for this and clamp the size properly. Fixes boards reporting bogus amounts of vram. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20drm/radeon: program DCE2 audio dto just like DCE3Alex Deucher
commit 55d4e020fb8ddd3896a8cd3351028f5c3a2c4bd3 upstream. Seems to work like the DCE3 version despite what the register spec says. bug: https://bugs.freedesktop.org/show_bug.cgi?id=71975 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20drm/radeon: fix typo in fetching mpll paramsAlex Deucher
commit 180f805f4f03b2894701f9831b4e96a308330b22 upstream. Copy-paste typo. Value should be 0-2, not 0-1. Noticed-by: Sylvain BERTRAND <sylware@legeek.net> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20drm/i915: use the correct force_wake function at the PC8 codePaulo Zanoni
commit a1216444283e81fd904593a4a77c90adfe5d14d1 upstream. When I submitted the first patch adding these force wake functions, Chris Wilson observed that I was using the wrong functions, so I sent a second version of the patch to correct this problem. The problem is that v1 was merged instead of v2. I was able to notice the problem when running the debugfs-forcewake-user subtest of pm_pc8 from intel-gpu-tools. Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20igb: Fix for issue where values could be too high for udelay function.Carolyn Wyborny
commit df29df92adda751ac04ca5149d30014b5199db81 upstream. This patch changes the igb_phy_has_link function to check the value of the parameter before deciding to use udelay or mdelay in order to be sure that the value is not too high for udelay function. Signed-off-by: Sunil K Pandey <sunil.k.pandey@intel.com> Signed-off-by: Kevin B Smith <kevin.b.smith@intel.com> Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20net: allwinner: emac: Add missing free_irqMaxime Ripard
commit e9c56f8d2f851fb6d6ce6794c0f5463b862a878e upstream. The sun4i-emac driver uses devm_request_irq at .ndo_open time, but relies on the managed device mechanism to actually free it. This causes an issue whenever someone wants to restart the interface, the interrupt still being held, and not yet released. Fall back to using the regular request_irq at .ndo_open time, and introduce a free_irq during .ndo_stop. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20mwifiex: fix memory leak issue for ibss joinUjjal Roy
commit 517543fd72d577dde2ebd9505dc4abf26d589f9a upstream. For IBSS join if the requested SSID matches current SSID, it returns without freeing the allocated beacon IE buffer. Signed-off-by: Ujjal Roy <royujjal@gmail.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20iwlwifi: mvm: check sta_id/drain values in debugfsJohannes Berg
commit 60765a47a433d54e4744c285ad127f182dcd80aa upstream. The station ID must be valid, if it's out of range then the array access may crash. Validate the station ID to the array length, and also validate the drain value even if that doesn't matter all that much. Fixes: 8ca151b568b6 ("iwlwifi: add the MVM driver") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20ath9k: fix duration calculation for non-aggregated packetsFelix Fietkau
commit bbf807bc0697e577c137a5fffb30fca7c6a45da1 upstream. When not aggregating packets, fi->framelen should be passed in as length to calculate the duration. Before the tx path rework, ath_tx_fill_desc was called for either one aggregate, or one single frame, with the length of the packet or the aggregate as a parameter. After the rework, ath_tx_sched_aggr can pass a burst of single frames to ath_tx_fill_desc and sets len=0. Fix broken duration calculation by overriding the length in ath_tx_fill_desc before passing it to ath_buf_set_rate. Reported-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20ath9k: Fix XLNA bias strengthSujith Manoharan
commit a1783a7b0846fc6414483e6caf646db72023fffd upstream. The EEPROM parameter to determine whether the bias strength values for XLNA have to be applied is part of the miscConfiguration field and not featureEnable. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20ath9k: Fix QuickDrop usageSujith Manoharan
commit 93c1cfbe598f72cfa7be49e4a7d2a1d482e15119 upstream. Bit 5 in the miscConfiguration field of the base EEPROM header denotes whether QuickDrop is enabled or not. Fix the incorrect usage of BIT(1) and also make sure that this is done only for the required chips. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20drm/i915: Fix pipe CSC post offset calculationVille Syrjälä
commit 32cf0cb0294814cb1ee5d8727e9aac0e9aa80d2e upstream. We were miscalculating the pipe CSC post offset for the full->limited range conversion. The resulting post offset was double what it was supposed to be, which caused blacks to come out grey when using limited range output on HSW+. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=71769 Tested-by: Lauri Mylläri <lauri.myllari@gmail.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20iommu/arm-smmu: use mutex instead of spinlock for locking page tablesWill Deacon
commit a44a9791e778d9ccda50d5534028ed4057a9a45b upstream. When creating IO mappings, we lazily allocate our page tables using the standard, non-atomic allocator functions. This presents us with a problem, since our page tables are protected with a spinlock. This patch reworks the smmu_domain lock to use a mutex instead of a spinlock. iova_to_phys is then reworked so that it only reads the page tables, and can run in a lockless fashion, leaving the mutex to guard against concurrent mapping threads. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20Partially revert "mtd: nand: pxa3xx: Introduce 'marvell,armada370-nand' ↵Ezequiel Garcia
compatible string" commit 9c59ac616137fb62f6cb3f1219201b09cbcf30be upstream. This partially reverts c0f3b8643a6fa2461d70760ec49d21d2b031d611. The "armada370-nand" compatible support is not complete, and it was mistake to add it. Revert it and postpone the support until the infrastructure is in place. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20regulator: pfuze100: Fix address of FABIDAxel Lin
commit a1b6fa85c639ad0d5447d1a5e7d1463bbe29fcd3 upstream. According to the datasheet, the address of FABID is 0x4. Fix it. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Robin Gong <b38343@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20drivers/rtc/rtc-at91rm9200.c: correct alarm over day/month wrapLinus Pizunski
commit eb3c227289840eed95ddfb0516046f08d8993940 upstream. Update month and day of month to the alarm month/day instead of current day/month when setting the RTC alarm mask. Signed-off-by: Linus Pizunski <linus@narrativeteam.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20media: af9035: fix broken I2C and USB I/OAntti Palosaari
commit 9323297dc0ea9141f8099e474657391bb3ad98f8 upstream. There was three small buffer len calculation bugs which caused driver non-working. These are coming from recent commit: commit 7760e148350bf6df95662bc0db3734e9d991cb03 [media] af9035: Don't use dynamic static allocation Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20Input: usbtouchscreen - separate report and transmit buffer size handlingChristian Engelmayer
commit 4ef38351d770cc421f4a0c7a849fd13207fc5741 upstream. This patch supports the separate handling of the USB transfer buffer length and the length of the buffer used for multi packet support. For devices supporting multiple report or diagnostic packets, the USB transfer size is now limited to the USB endpoints wMaxPacketSize - otherwise it defaults to the configured report packet size as before. This fixes an issue where event reporting can be delayed for an arbitrary time for multi packet devices. For instance the report size for eGalax devices is defined to the 16 byte maximum diagnostic packet size as opposed to the 5 byte report packet size. In case the driver requests 16 byte from the USB interrupt endpoint, the USB host controller driver needs to split up the request into 2 accesses according to the endpoints wMaxPacketSize of 8 byte. When the first transfer is answered by the eGalax device with not less than the full 8 byte requested, the host controller has got no way of knowing whether the touch controller has got additional data queued and will issue the second transfer. If per example a liftoff event finishes at such a wMaxPacketSize boundary, the data will not be available to the usbtouch driver until a further event is triggered and transfered to the host. From user perspective the BTN_TOUCH release event in this case is stuck until the next touch down event. Signed-off-by: Christian Engelmayer <christian.engelmayer@frequentis.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20USB: option: support new huawei devicesFangxiaozhi (Franko)
commit 2bf308d7bc5e8cdd69672199f59532f35339133c upstream. Add new supporting declarations to option.c, to support Huawei new devices with new bInterfaceProtocol value. Signed-off-by: fangxiaozhi <huananhu@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20USB: serial: option: blacklist interface 1 for Huawei E173s-6Gustavo Zacarias
commit 8f173e22abf2258ddfa73f46eadbb6a6c29f1631 upstream. Interface 1 on this device isn't for option to bind to otherwise an oops on usb_wwan with log flooding will happen when accessing the port: tty_release: ttyUSB1: read/write wait queue active! It doesn't seem to respond to QMI if it's added to qmi_wwan so don't add it there - it's likely used by the card reader. Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20usb: musb: musb_cppi41: handle pre-mature TX complete interruptSebastian Andrzej Siewior
commit a655f481d83d6d37bec0a2ddfdd24c30ff8f541f upstream. The TX-complete interrupt of the CPPI41 on AM335x fires too early. Adding a loop and counting how long it takes until the MUSB_TXCSR_TXPKTRDY bit is cleared I see FS: |musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=64, mode=0, dma_addr=0xadc54002, len=1514 is_tx=1 |cppi41_dma_callback() 74 loops |musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=64, mode=0, dma_addr=0xadcd8802, len=1514 is_tx=1 |cppi41_dma_callback() 66 loops |musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=64, mode=0, dma_addr=0xadcd8002, len=1514 is_tx=1 |cppi41_dma_callback() 136 loops |musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=64, mode=0, dma_addr=0xadf55802, len=1514 is_tx=1 |cppi41_dma_callback() 136 loops avg: 110 - 150us HS: |musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=512, mode=0, dma_addr=0xaca6f002, len=1514 is_tx=1 |cppi41_dma_callback() 0 loops |musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=512, mode=0, dma_addr=0xadd6f802, len=1514 is_tx=1 |cppi41_dma_callback() 2 loops |musb-hdrc musb-hdrc.0.auto: configure ep1/80 packet_sz=512, mode=0, dma_addr=0xadd6f002, len=1514 is_tx=1 |cppi41_dma_callback() 13 loops avg: 2us for the same test case. One loop means a udelay(1). The delay seems to depend on the packet size. On HS the bit is always cleared for small packet sizes while on FS it is never the case, it mostly around 110us. This testing has been performed with g_ether (musb as device) and using BULK transfers. INTR transfers are way more fun: during init the gadget sends a INT packet to the host and cppi41 says "transfer done" shortly after. The MUSB_TXCSR_TXPKTRDY bit is set even seconds later. The reason is that the host did not try to receive it, it does so after the interface (on host side) has been configured. Until this happens, that packet remains in musb's FIFO. To fix this, two things are done: - No DMA transfers for INT based endpoints. These transfer are usually very small and rare so it is likely better to skip the DMA engine and stuff the four bytes directly into the FIFO - on HS we poll up to 25us and hope that bit goes away. If not we setup a hrtimer to poll for it. The 140us delay is a rule of thumb. In FS the command | ping 10.10.10.10 -c1 -s65130 creates about 44 1514bytes transfers. About 19 of them need a second timer to complete. Reported-by: Bin Liu <b-liu@ti.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20usb: musb: musb_cppi41: factor most of cppi41_dma_callback() into ↵Sebastian Andrzej Siewior
cppi41_trans_done() commit d373a8534d5e1e7a350e40d3c11961a7cd8d530b upstream. This patch moves most of the logic in cppi41_dma_callback() into cppi41_trans_done() where it can be called from another function. Instead of computing "transferred" (the number of bytes transferred in the last transaction) in cppi41_trans_done() the member "cppi41_channel->prog_len" is now set to 0 if the transfer as a whole can be considered as done. If it is != 0 then the next iteration is assumed. This is a preparation for a workaround. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20usb: xhci: Link TRB must not occur within a USB payload burstDavid Laight
commit 35773dac5f862cb1c82ea151eba3e2f6de51ec3e upstream. Section 4.11.7.1 of rev 1.0 of the xhci specification states that a link TRB can only occur at a boundary between underlying USB frames (512 bytes for high speed devices). If this isn't done the USB frames aren't formatted correctly and, for example, the USB3 ethernet ax88179_178a card will stop sending (while still receiving) when running a netperf tcp transmit test with (say) and 8k buffer. This should be a candidate for stable, the ax88179_178a driver defaults to gso and tso enabled so it passes a lot of fragmented skb to the USB stack. Notes from Sarah: Discussion: http://marc.info/?l=linux-usb&m=138384509604981&w=2 This patch fixes a long-standing xHCI driver bug that was revealed by a change in 3.12 in the usb-net driver. Commit 638c5115a794981441246fa8fa5d95c1875af5ba "USBNET: support DMA SG" added support to use bulk endpoint scatter-gather (urb->sg). Only the USB ethernet drivers trigger this bug, because the mass storage driver sends sg list entries in page-sized chunks. This patch only fixes the issue for bulk endpoint scatter-gather. The problem will still occur for periodic endpoints, because hosts will interpret no-op transfers as a request to skip a service interval, which is not what we want. Luckily, the USB core isn't set up for scatter-gather on isochronous endpoints, and no USB drivers use scatter-gather for interrupt endpoints. Document this known limitation so that developers won't try to use urb->sg for interrupt endpoints until this issue is fixed. The more comprehensive fix would be to allow link TRBs in the middle of the endpoint ring and revert this patch, but that fix would touch too much code to be allowed in for stable. This patch should be backported to kernels as old as 3.12, that contain the commit 638c5115a794981441246fa8fa5d95c1875af5ba "USBNET: support DMA SG". Without this patch, the USB network device gets wedged, and stops sending packets. Mark Lord confirms this patch fixes the regression: http://marc.info/?l=linux-netdev&m=138487107625966&w=2 Signed-off-by: David Laight <david.laight@aculab.com> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Tested-by: Mark Lord <mlord@pobox.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20usb: gadget: composite: reset delayed_status on reset_configMichael Grzeschik
commit 2bac51a1827a18821150ed8c9f9752c02f9c2b02 upstream. The delayed_status value is used to keep track of status response packets on ep0. It needs to be reset or the set_config function would still delay the answer, if the usb device got unplugged while waiting for setup_continue to be called. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20usb: dwc3: fix implementation of endpoint wedgeAlan Stern
commit a535d81c92615b8ffb99b7e1fd1fb01effaed1af upstream. The dwc3 UDC driver doesn't implement endpoint wedging correctly. When an endpoint is wedged, the gadget driver should be allowed to clear the wedge by calling usb_ep_clear_halt(). Only the host is prevented from resetting the endpoint. This patch fixes the implementation. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Tested-by: Pratyush Anand <pratyush.anand@st.com> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>