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2016-08-31net: ethernet: mediatek: fix API usage with skb_free_fragSean Wang
use skb_free_frag() instead of legacy put_page() Signed-off-by: Sean Wang <sean.wang@mediatek.com> Acked-by: John Crispin <john@phrozen.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-31net: ethernet: mediatek: fix incorrect return value of devm_clk_get with ↵Sean Wang
EPROBE_DEFER 1) If the return value of devm_clk_get is EPROBE_DEFER, we should defer probing the driver. The change is verified and works based on 4.8-rc1 staying with the latest clk-next code for MT7623. 2) Changing with the usage of loops to work out if all clocks required are fine Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-31net: ethernet: mediatek: fix fails from TX housekeeping due to incorrect ↵Sean Wang
port setup which net device the SKB is complete for depends on the forward port on txd4 on the corresponding TX descriptor, but the information isn't set up well in case of SKB fragments that would lead to watchdog timeout from the upper layer, so fix it up. Signed-off-by: Sean Wang <sean.wang@mediatek.com> Acked-by: John Crispin <john@phrozen.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-01Merge branch 'msm-fixes-4.8' of git://people.freedesktop.org/~robclark/linux ↵Dave Airlie
into drm-fixes copy from user fixes. * 'msm-fixes-4.8' of git://people.freedesktop.org/~robclark/linux: drm/msm: protect against faults from copy_from_user() in submit ioctl drm/msm: fix use of copy_from_user() while holding spinlock
2016-08-31audit: fix exe_file access in audit_exe_compareMateusz Guzik
Prior to the change the function would blindly deference mm, exe_file and exe_file->f_inode, each of which could have been NULL or freed. Use get_task_exe_file to safely obtain stable exe_file. Signed-off-by: Mateusz Guzik <mguzik@redhat.com> Acked-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Acked-by: Richard Guy Briggs <rgb@redhat.com> Cc: <stable@vger.kernel.org> # 4.3.x Signed-off-by: Paul Moore <paul@paul-moore.com>
2016-09-01Revert "drm: make DRI1 drivers depend on BROKEN"Dave Airlie
This reverts commit d10571fc4fba7d57fb8157f0be61dcbe4a7965ca. This isn't how we get to do this unfortunately. Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-09-01Merge tag 'topic/drm-misc-2016-08-31' of ↵Dave Airlie
git://anongit.freedesktop.org/drm-intel into drm-next More -misc stuff - moar drm_crtc.c split up&documentation - some fixes for the simple kms helpers (Andrea) - I included all the dri1 patches from David - we're not removing any code or drivers, and it seems to have worked as a wake-up call to motivate a few more people to upstream kms conversions for these. Feel free to revert if you disagree strongly. - a few other single patches * tag 'topic/drm-misc-2016-08-31' of git://anongit.freedesktop.org/drm-intel: (24 commits) drm: drm_probe_helper: Fix output_poll_work scheduling drm: bridge/dw-hdmi: Fix colorspace and scan information registers values drm/doc: Polish docs for drm_property&drm_property_blob drm: Unify handling of blob and object properties drm: Extract drm_property.[hc] drm: move drm_mode_legacy_fb_format to drm_fourcc.c drm/doc: Polish docs for drm_mode_object drm: Remove drm_mode_object->atomic_count drm: Extract drm_mode_object.[hc] drm/doc: Polish kerneldoc for encoders drm: Extract drm_encoder.[hc] drm/fb-helper: don't call remove_conflicting_framebuffers for FB=m && DRM=y drm/atomic-helper: Add NO_DISABLE_AFTER_MODESET flag support for plane commit drm/atomic-helper: Disable appropriate planes in disable_planes_on_crtc() drm/atomic-helper: Add atomic_disable CRTC helper callback drm: simple_kms_helper: add support for bridges drm: simple_kms_helper: make connector optional at init time drm/bridge: introduce bridge detaching mechanism drm/simple-helpers: Always add planes to the state update drm: reduce GETCLIENT to a minimum ...
2016-08-31mm: introduce get_task_exe_fileMateusz Guzik
For more convenient access if one has a pointer to the task. As a minor nit take advantage of the fact that only task lock + rcu are needed to safely grab ->exe_file. This saves mm refcount dance. Use the helper in proc_exe_link. Signed-off-by: Mateusz Guzik <mguzik@redhat.com> Acked-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Acked-by: Richard Guy Briggs <rgb@redhat.com> Cc: <stable@vger.kernel.org> # 4.3.x Signed-off-by: Paul Moore <paul@paul-moore.com>
2016-09-01Merge branch 'drm-fixes-4.8' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie
into drm-fixes Fixes for 4.8: - 2 CI S4 fixes - error handling fix * 'drm-fixes-4.8' of git://people.freedesktop.org/~agd5f/linux: drm/amdgpu: record error code when ring test failed drm/amd/amdgpu: compute ring test fail during S4 on CI drm/amd/amdgpu: sdma resume fail during S4 on CI
2016-08-31drm/amdgpu: add gart recovery by gtt list V2Chunming Zhou
V2: a. gart recovery should be ahead of ring test. b. rename to amdgpu_ttm_recover_gart Signed-off-by: Chunming Zhou <David1.Zhou@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: link all gtt when binding them V2Chunming Zhou
V2: spin lock instead of mutex for gtt list Signed-off-by: Chunming Zhou <David1.Zhou@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: add si pciids v2Ken Wang
Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu/si: Add updated smc firmware for SI kickersAlex Deucher
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: Add SI Family informationKen Wang
Signed-off-by: Ken Wang <Qingqing.Wang@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: enable SI DPMMaruthi Srinivas Bayyavarapu
Signed-off-by: Maruthi Bayyavarapu <maruthi.bayyavarapu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: use DRM print instead of printkHuang Rui
Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: add SI DPM support (v4)Maruthi Bayyavarapu
v2: corrected register offset shift v3: rebase fixes v4: fix firmware paths add SI smc firmware versions for sysfs dump remove unused function forward define fix the tahiti specific value of DEEP_SLEEP_CLK_SEL field fix to miss adding thermal controller use vram_type instead of checking mem_gddr5 flag fix incorrect index of CG_FFCT_0 register fix incorrect reading method at si_get_current_pcie_speed Signed-off-by: Maruthi Bayyavarapu <maruthi.bayyavarapu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: add SI SMC supportMaruthi Srinivas Bayyavarapu
Signed-off-by: Maruthi Bayyavarapu <maruthi.bayyavarapu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: add si dpm support in amdgpu_atombiosMaruthi Srinivas Bayyavarapu
v2: renamed _atom_ to _atombios_ for consistency added ulClockParams to _COMPUTE_MEMORY_ENGINE_PLL_PARAMETERS_V3 and _COMPUTE_MEMORY_ENGINE_PLL_PARAMETERS_V5 to avoid build break Signed-off-by: Maruthi Bayyavarapu <maruthi.bayyavarapu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: add si specific logic into the device initialize function v3Ken Wang
v3: guard doorbell_fini as well Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: record error code when ring test failedChunming Zhou
Otherwise we may miss errors. Signed-off-by: Chunming Zhou <David1.Zhou@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-08-31drm/amd/amdgpu: compute ring test fail during S4 on CIjimqu
unhalt Instrction Fetch Unit after all rings are inited. Signed-off-by: JimQu <Jim.Qu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-08-31drm/amd/amdgpu: sdma resume fail during S4 on CIjimqu
SDMA could be fail in the thaw() and restore() processes, do software reset if each SDMA engine is busy. Signed-off-by: JimQu <Jim.Qu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-08-31Merge branch 'linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto fixes from Herbert Xu: "This fixes the following issues: - Kconfig problem that prevented mxc-rnga from being enabled - bogus key sizes in qat aes-xts - buggy aes-xts code in vmx" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: vmx - fix null dereference in p8_aes_xts_crypt crypto: qat - fix aes-xts key sizes hwrng: mxc-rnga - Fix Kconfig dependency
2016-08-31bridge: re-introduce 'fix parsing of MLDv2 reports'Davide Caratti
commit bc8c20acaea1 ("bridge: multicast: treat igmpv3 report with INCLUDE and no sources as a leave") seems to have accidentally reverted commit 47cc84ce0c2f ("bridge: fix parsing of MLDv2 reports"). This commit brings back a change to br_ip6_multicast_mld2_report() where parsing of MLDv2 reports stops when the first group is successfully added to the MDB cache. Fixes: bc8c20acaea1 ("bridge: multicast: treat igmpv3 report with INCLUDE and no sources as a leave") Signed-off-by: Davide Caratti <dcaratti@redhat.com> Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Acked-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-31binfmt_elf: switch to new creds when switching to new mmLinus Torvalds
We used to delay switching to the new credentials until after we had mapped the executable (and possible elf interpreter). That was kind of odd to begin with, since the new executable will actually then _run_ with the new creds, but whatever. The bigger problem was that we also want to make sure that we turn off prof events and tracing before we start mapping the new executable state. So while this is a cleanup, it's also a fix for a possible information leak. Reported-by: Robert Święcki <robert@swiecki.net> Tested-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David Howells <dhowells@redhat.com> Acked-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Andy Lutomirski <luto@amacapital.net> Acked-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Willy Tarreau <w@1wt.eu> Cc: Kees Cook <keescook@chromium.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-31drm/amdgpu: add si ip blocks setup v3Ken Wang
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: add all the components for si into Makefile/kconfig v3Ken Wang
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: introduce pcie port read/write entryHuang Rui
This patch adds pcie port read/write entry, because it will be also used on si dpm part. Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: add si implementation v10Ken Wang
v5: rebase fixes v6: add mgcg arrays v7: rebase fixes v8: rebase fixes v9: add get_disabled_bios(), make get_xclk static v10: fix oland and hainan asic specific handle at si_program_aspm Signed-off-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: add DMA implementation for si v8Ken Wang
v4: rebase fixes v5: use the generic nop fill v6: rebase fixes v7: rebase fixes copy count fixes from Jonathan general cleanup add fill buffer implementation v8: adapt write_pte and copy_pte to latest changes Signed-off-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: add graphic pipeline implementation for si v8Ken Wang
v5: rebase fixes v6: rebase fixes v7: rebase fixes fix tile reg offset as noticed by Jonathan Drop some debugging remnants v8: add gfx v6 firmware versions for sysfs dump Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: atombios change for dce6 to work v3Ken Wang
v3: white space fixes Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: add display controller implementation for si v10Ken Wang
v4: rebase fixups v5: more fixes based on dce8 code v6: squash in dmif offset fix v7: rebase fixups v8: rebase fixups, drop some debugging remnants v9: fix BE build v10: include Marek's tiling fixes, add support for page_flip_target, set MASTER_UDPATE_MODE=0, fix cursor Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: add interupt handler implementation for si v3Ken Wang
v3: rebase fixups Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: add graphic memory controller implementation for si v7Ken Wang
v4: rebase fixups v5: rebase fixups v5: rebase fixups v6: rebase fixups for gart size changes v7: add gmc v6 firmware versions for sysfs dump Signed-off-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31drm/amdgpu: add si header files v4Ken Wang
v4: drop unused DCE6 macro Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-31raid5: guarantee enough stripes to avoid reshape hangShaohua Li
If there aren't enough stripes, reshape will hang. We have a check for this in new reshape, but miss it for reshape resume, hence we could see hang in reshape resume. This patch forces enough stripes existed if reshape resumes. Reviewed-by: NeilBrown <neilb@suse.com> Signed-off-by: Shaohua Li <shli@fb.com>
2016-08-31raid5-cache: fix a deadlock in superblock writeShaohua Li
There is a potential deadlock in superblock write. Discard could zero data, so before discard we must make sure superblock is updated to new log tail. Updating superblock (either directly call md_update_sb() or depend on md thread) must hold reconfig mutex. On the other hand, raid5_quiesce is called with reconfig_mutex hold. The first step of raid5_quiesce() is waitting for all IO finish, hence waitting for reclaim thread, while reclaim thread is calling this function and waitting for reconfig mutex. So there is a deadlock. We workaround this issue with a trylock. The downside of the solution is we could miss discard if we can't take reconfig mutex. But this should happen rarely (mainly in raid array stop), so miss discard shouldn't be a big problem. Cc: NeilBrown <neilb@suse.com> Signed-off-by: Shaohua Li <shli@fb.com>
2016-08-31crypto: caam - fix IV loading for authenc (giv)decryptionHoria Geantă
For algorithms that implement IV generators before the crypto ops, the IV needed for decryption is initially located in req->src scatterlist, not in req->iv. Avoid copying the IV into req->iv by modifying the (givdecrypt) descriptors to load it directly from req->src. aead_givdecrypt() is no longer needed and goes away. Cc: <stable@vger.kernel.org> # 4.3+ Fixes: 479bcc7c5b9e ("crypto: caam - Convert authenc to new AEAD interface") Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-08-31crypto: cryptd - Use correct tfm object for AEAD trackingHerbert Xu
The AEAD code path incorrectly uses the child tfm to track the cryptd refcnt, and then potentially frees the child tfm. Fixes: 81760ea6a95a ("crypto: cryptd - Add helpers to check...") Reported-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-08-31serial: 8250: added acces i/o products quad and octal serial cardsJimi Damon
Added devices ids for acces i/o products quad and octal serial cards that make use of existing Pericom PI7C9X7954 and PI7C9X7958 configurations . Signed-off-by: Jimi Damon <jdamon@accesio.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-31ALSA: fireworks: accessing to user space outside spinlockTakashi Sakamoto
In hwdep interface of fireworks driver, accessing to user space is in a critical section with disabled local interrupt. Depending on architecture, accessing to user space can cause page fault exception. Then local processor stores machine status and handles the synchronous event. A handler corresponding to the event can call task scheduler to wait for preparing pages. In a case of usage of single core processor, the state to disable local interrupt is worse because it don't handle usual interrupts from hardware. This commit fixes this bug, performing the accessing outside spinlock. This commit also gives up counting the number of queued response messages to simplify ring-buffer management. Reported-by: Vaishali Thakkar <vaishali.thakkar@oracle.com> Cc: stable@vger.kernel.org Fixes: 555e8a8f7f14('ALSA: fireworks: Add command/response functionality into hwdep interface') Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-08-31serial: 8250_mid: fix divide error bug if baud rate is 0Andy Shevchenko
Since the commit c1a67b48f6a5 ("serial: 8250_pci: replace switch-case by formula for Intel MID"), the 8250 driver crashes in the byt_set_termios() function with a divide error. This is caused by the fact that a baud rate of 0 (B0) is not handled properly. Fix it by falling back to B9600 in this case. Reported-by: "Mendez Salinas, Fernando" <fernando.mendez.salinas@intel.com> Fixes: c1a67b48f6a5 ("serial: 8250_pci: replace switch-case by formula for Intel MID") Cc: stable@vger.kernel.org Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-31Revert "tty/serial/8250: use mctrl_gpio helpers"Andy Shevchenko
Serial console is broken in v4.8-rcX. Mika and I independently bisected down to commit 4ef03d328769 ("tty/serial/8250: use mctrl_gpio helpers"). Since neither author nor anyone else didn't propose a solution we better revert it for now. This reverts commit 4ef03d328769eddbfeca1f1c958fdb181a69c341. Link: https://lkml.kernel.org/r/20160809130229.GN1729@lahna.fi.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-31sysfs: correctly handle read offset on PREALLOC attrsKonstantin Khlebnikov
Attributes declared with __ATTR_PREALLOC use sysfs_kf_read() which returns zero bytes for non-zero offset. This breaks script checkarray in mdadm tool in debian where /bin/sh is 'dash' because its builtin 'read' reads only one byte at a time. Script gets 'i' instead of 'idle' when reads current action from /sys/block/$dev/md/sync_action and as a result does nothing. This patch adds trivial implementation of partial read: generate whole string and move required part into buffer head. Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Fixes: 4ef67a8c95f3 ("sysfs/kernfs: make read requests on pre-alloc files use the buffer.") Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=787950 Cc: Stable <stable@vger.kernel.org> # v3.19+ Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-31documentation: drivers/core/of: fix name of of_node symlinkMartin Fuzzey
commit 5590f3196b29 ("drivers/core/of: Add symlink to device-tree from devices with an OF node") added a symlink called "of_node" to sysfs however the documentation describes it as "of_path". Fix the documentation to match what the code actually does. Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-31kernfs: don't depend on d_find_any_alias() when generating notificationsTejun Heo
kernfs_notify_workfn() sends out file modified events for the scheduled kernfs_nodes. Because the modifications aren't from userland, it doesn't have the matching file struct at hand and can't use fsnotify_modify(). Instead, it looked up the inode and then used d_find_any_alias() to find the dentry and used fsnotify_parent() and fsnotify() directly to generate notifications. The assumption was that the relevant dentries would have been pinned if there are listeners, which isn't true as inotify doesn't pin dentries at all and watching the parent doesn't pin the child dentries even for dnotify. This led to, for example, inotify watchers not getting notifications if the system is under memory pressure and the matching dentries got reclaimed. It can also be triggered through /proc/sys/vm/drop_caches or a remount attempt which involves shrinking dcache. fsnotify_parent() only uses the dentry to access the parent inode, which kernfs can do easily. Update kernfs_notify_workfn() so that it uses fsnotify() directly for both the parent and target inodes without going through d_find_any_alias(). While at it, supply the target file name to fsnotify() from kernfs_node->name. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Evgeny Vereshchagin <evvers@ya.ru> Fixes: d911d9874801 ("kernfs: make kernfs_notify() trigger inotify events too") Cc: John McCutchan <john@johnmccutchan.com> Cc: Robert Love <rlove@rlove.org> Cc: Eric Paris <eparis@parisplace.org> Cc: stable@vger.kernel.org # v3.16+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-31ALSA: firewire-tascam: accessing to user space outside spinlockTakashi Sakamoto
In hwdep interface of firewire-tascam driver, accessing to user space is in a critical section with disabled local interrupt. Depending on architecture, accessing to user space can cause page fault exception. Then local processor stores machine status and handle the synchronous event. A handler corresponding to the event can call task scheduler to wait for preparing pages. In a case of usage of single core processor, the state to disable local interrupt is worse because it doesn't handle usual interrupts from hardware. This commit fixes this bug, by performing the accessing outside spinlock. Reported-by: Vaishali Thakkar <vaishali.thakkar@oracle.com> Cc: stable@vger.kernel.org Fixes: e5e0c3dd257b('ALSA: firewire-tascam: add hwdep interface') Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-08-31thunderbolt: Don't declare Falcon Ridge unsupportedLukas Wunner
Falcon Ridge 4C has been supported by the driver from the beginning, Falcon Ridge 2C support was just added. Don't irritate users with a warning declaring the opposite. Signed-off-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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