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2016-12-06nvme-fabrics: Adjust source code indentationBart Van Assche
Adjust indentation such that arguments are aligned. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
2016-12-06nvme/scsi: Remove set-but-not-used variablesBart Van Assche
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
2016-12-06nvmet: Fix possible infinite loop triggered on hot namespace removalSolganik Alexander
When removing a namespace we delete it from the subsystem namespaces list with list_del_init which allows us to know if it is enabled or not. The problem is that list_del_init initialize the list next and does not respect the RCU list-traversal we do on the IO path for locating a namespace. Instead we need to use list_del_rcu which is allowed to run concurrently with the _rcu list-traversal primitives (keeps list next intact) and guarantees concurrent nvmet_find_naespace forward progress. By changing that, we cannot rely on ns->dev_link for knowing if the namspace is enabled, so add enabled indicator entry to nvmet_ns for that. Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Solganik Alexander <sashas@lightbitslabs.com> Cc: <stable@vger.kernel.org> # v4.8+
2016-12-06nvme-fabrics: Fix a memory leak in an nvmf_create_ctrl() error pathBart Van Assche
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
2016-12-06nvme-fabrics: Fix memory leaks in nvmf_parse_options()Bart Van Assche
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
2016-12-06nvme-rdma: force queue size to respect controller capabilitySamuel Jones
Queue size needs to respect the Maximum Queue Entries Supported advertised by the controller in its Capability register. Signed-off-by: Samuel Jones <sjones@kalray.eu> Reviewed-by: Christoph Hellwig <hch@lst.de> [sagig: fixed queue_size adjustment according to Daniel Verkamp <daniel.verkamp@intel.com> comment] Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
2016-12-06nvmet-rdma: Fix REJ status codeBart Van Assche
nvmet_sq_init() returns a value <= 0. nvmet_rdma_cm_reject() expects a second argument that is a NVME_RDMA_CM_* constant. Hence this patch. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Sagi Grimberg <sagi@grimbeg.me> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
2016-12-06Merge tag 'perf-core-for-mingo-20161205' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: Fixes: - Do not show a bogus target address in 'perf annotate' for targetless powerpc jump instructions such as 'bctr' (Ravi Bangoria) - Fix tools/build race conditions with the fixdep utility (Jiri Olsa) - Fix building objtool with clang (Peter Foley) Infrastructure changes: - Support linking perf with clang and LLVM libraries, initially statically, but this limitation will be lifted and shared libraries, when available, will be preferred to the static build, that should, as with other features, be enabled explicitly (Wang Nan) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-12-06Merge branch 'linus' into perf/core, to pick up fixesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-12-06usbip: fix warning in vhci_hcd_probe/lockdep_init_mapShuah Khan
vhci_hcd calls sysfs_create_group() with dynamically allocated sysfs attributes triggering the lock-class key not persistent warning. Call sysfs_attr_init() for dynamically allocated sysfs attributes to fix it. vhci_hcd vhci_hcd: USB/IP Virtual Host Controller vhci_hcd vhci_hcd: new USB bus registered, assigned bus number 2 BUG: key ffff88006a7e8d18 not in .data! ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at kernel/locking/lockdep.c:3131 lockdep_init_map+0x60c/0x770 DEBUG_LOCKS_WARN_ON(1)[ 1.567044] Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.9.0-rc7+ #58 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 ffff88006bce6eb8 ffffffff81f96c8a ffffffff00000a02 1ffff1000d79cd6a ffffed000d79cd62 000000046bce6ed8 0000000041b58ab3 ffffffff8598af40 ffffffff81f969f8 0000000000000000 0000000041b58ab3 0000000000000200 Call Trace: [< inline >] __dump_stack lib/dump_stack.c:15 [<ffffffff81f96c8a>] dump_stack+0x292/0x398 lib/dump_stack.c:51 [<ffffffff812b808f>] __warn+0x19f/0x1e0 kernel/panic.c:550 [<ffffffff812b8195>] warn_slowpath_fmt+0xc5/0x110 kernel/panic.c:565 [<ffffffff813f3efc>] lockdep_init_map+0x60c/0x770 kernel/locking/lockdep.c:3131 [<ffffffff819e43d4>] __kernfs_create_file+0x114/0x2a0 fs/kernfs/file.c:954 [<ffffffff819e68f5>] sysfs_add_file_mode_ns+0x225/0x520 fs/sysfs/file.c:305 [< inline >] create_files fs/sysfs/group.c:64 [<ffffffff819e8a89>] internal_create_group+0x239/0x8f0 fs/sysfs/group.c:134 [<ffffffff819e915f>] sysfs_create_group+0x1f/0x30 fs/sysfs/group.c:156 [<ffffffff8323de24>] vhci_start+0x5b4/0x7a0 drivers/usb/usbip/vhci_hcd.c:978 [<ffffffff82c907ca>] usb_add_hcd+0x8da/0x1c60 drivers/usb/core/hcd.c:2867 [<ffffffff8323bc57>] vhci_hcd_probe+0x97/0x130 drivers/usb/usbip/vhci_hcd.c:1103 --- --- ---[ end trace c33c7b202cf3aac8 ]--- Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> Reported-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-12-06usb: core: usbport: Use proper LED API to fix potential crashRafał Miłecki
Calling brightness_set manually isn't safe as some LED drivers don't implement this callback. The best idea is to just use a proper helper which will fallback to the brightness_set_blocking callback if needed. This fixes: [ 1461.761528] Unable to handle kernel NULL pointer dereference at virtual address 00000000 (...) [ 1462.117049] Backtrace: [ 1462.119521] [<bf228164>] (usbport_trig_port_store [ledtrig_usbport]) from [<c023f758>] (dev_attr_store+0x20/0x2c) [ 1462.129826] r7:dcabc7c0 r6:dee0ff80 r5:00000002 r4:bf228164 [ 1462.135511] [<c023f738>] (dev_attr_store) from [<c0169310>] (sysfs_kf_write+0x48/0x4c) [ 1462.143459] r5:00000002 r4:c023f738 [ 1462.147049] [<c01692c8>] (sysfs_kf_write) from [<c0168ab8>] (kernfs_fop_write+0xf8/0x1f8) [ 1462.155258] r5:00000002 r4:df4a1000 [ 1462.158850] [<c01689c0>] (kernfs_fop_write) from [<c0100c78>] (__vfs_write+0x34/0x120) [ 1462.166800] r10:00000000 r9:dee0e000 r8:c000fc24 r7:00000002 r6:dee0ff80 r5:c01689c0 [ 1462.174660] r4:df727a80 [ 1462.177204] [<c0100c44>] (__vfs_write) from [<c0101ae4>] (vfs_write+0xac/0x170) [ 1462.184543] r9:dee0e000 r8:c000fc24 r7:dee0ff80 r6:b6f092d0 r5:df727a80 r4:00000002 [ 1462.192319] [<c0101a38>] (vfs_write) from [<c01028dc>] (SyS_write+0x4c/0xa8) [ 1462.199396] r9:dee0e000 r8:c000fc24 r7:00000002 r6:b6f092d0 r5:df727a80 r4:df727a80 [ 1462.207174] [<c0102890>] (SyS_write) from [<c000fa60>] (ret_fast_syscall+0x0/0x3c) [ 1462.214774] r7:00000004 r6:ffffffff r5:00000000 r4:00000000 [ 1462.220456] Code: bad PC value [ 1462.223560] ---[ end trace 676638a3a12c7a56 ]--- Reported-by: Ralph Sennhauser <ralph.sennhauser@gmail.com> Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Fixes: 0f247626cbb ("usb: core: Introduce a USB port LED trigger") Cc: stable@vger.kernel.org # 4.9+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-12-06usbip: add missing compile time generated files to .gitignoreShuah Khan
Add the following files to .gitignore compile libsrc/libusbip_la-sysfs_utils.lo libsrc/libusbip_la-usbip_device_driver.lo libsrc/libusbip_la-usbip_host_common.lo Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-12-06Merge branch 'drm-next/mxsfb' of ↵Dave Airlie
git://git.kernel.org/pub/scm/linux/kernel/git/marex/linux-2.6 into drm-next Add new driver for MXSFB. * 'drm-next/mxsfb' of git://git.kernel.org/pub/scm/linux/kernel/git/marex/linux-2.6: drm: Add new driver for MXSFB controller dt-bindings: mxsfb: Add new bindings for the MXSFB driver dt-bindings: mxsfb: Indentation cleanup
2016-12-06drm: Add new driver for MXSFB controllerMarek Vasut
Add new driver for the MXSFB controller found in i.MX23/28/6SX . The MXSFB controller is a simple framebuffer controller with one parallel LCD output. Unlike the MXSFB fbdev driver that is used on these systems now, this driver uses the DRM/KMS framework. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Shawn Guo <shawnguo@kernel.org>
2016-12-06dt-bindings: mxsfb: Add new bindings for the MXSFB driverMarek Vasut
Add new DT bindings for new MXSFB driver that is using the OF graph to parse the video output structure instead of hard-coding the display properties into the MXSFB node. The old MXSFB fbdev driver bindings are preserved in the same file in the "Old bindings" section. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Rob Herring <robh@kernel.org> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Shawn Guo <shawnguo@kernel.org> Acked-by: Rob Herring <robh@kernel.org>
2016-12-06dt-bindings: mxsfb: Indentation cleanupMarek Vasut
Clean up the ad-hoc indentation in the documentation, no functional change. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Shawn Guo <shawnguo@kernel.org> Acked-by: Rob Herring <robh@kernel.org>
2016-12-06PM / OPP: Don't WARN on multiple calls to dev_pm_opp_set_regulators()Viresh Kumar
If a platform specific OPP driver has called this routine first and set the regulators, then the second call from cpufreq-dt driver will hit the WARN_ON(). Remove the WARN_ON(), but continue to return error in such cases. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Tested-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-12-06PM / OPP: Allow platform specific custom set_opp() callbacksViresh Kumar
The generic set_opp() handler isn't sufficient for platforms with complex DVFS. For example, some TI platforms have multiple regulators for a CPU device. The order in which various supplies need to be programmed is only known to the platform code and its best to leave it to it. This patch implements APIs to register platform specific set_opp() callback. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Dave Gerlach <d-gerlach@ti.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-12-06PM / OPP: Separate out _generic_set_opp()Viresh Kumar
Later patches would add support for custom set_opp() callbacks. This patch separates out the code for _generic_set_opp() handler in order to prepare for that. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Dave Gerlach <d-gerlach@ti.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-12-06PM / OPP: Add infrastructure to manage multiple regulatorsViresh Kumar
This patch adds infrastructure to manage multiple regulators and updates the only user (cpufreq-dt) of dev_pm_opp_set{put}_regulator(). This is preparatory work for adding full support for devices with multiple regulators. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-12-06PM / OPP: Pass struct dev_pm_opp_supply to _set_opp_voltage()Viresh Kumar
Pass the entire supply structure instead of all of its fields. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Dave Gerlach <d-gerlach@ti.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-12-06PM / OPP: Manage supply's voltage/current in a separate structureViresh Kumar
This is a preparatory step for multiple regulator per device support. Move the voltage/current variables to a new structure. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Dave Gerlach <d-gerlach@ti.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-12-06PM / OPP: Don't use OPP structure outside of rcu protected sectionViresh Kumar
The OPP structure must not be used out of the rcu protected section. Cache the values to be used in separate variables instead. Cc: 4.6+ <stable@vger.kernel.org> # 4.6+ Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Tested-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-12-06PM / OPP: Reword binding supporting multiple regulators per deviceViresh Kumar
On certain platforms (like TI), DVFS for a single device (CPU) requires configuring multiple power supplies. The OPP bindings already contains binding and example to explain this case, but it isn't sufficient. - There is no way for the code parsing these bindings to know which voltage values belong to which power supply. - It is not possible to know the order in which the supplies need to be configured while switching OPPs. This patch clarifies on those details by mentioning that such information is left for the implementation specific bindings to explain. They may want to hardcode such details or implement their own properties to get such information. All implementations using multiple regulators for their devices must provide a binding document explaining their implementation. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-12-06PM / OPP: Fix incorrect cpu-supply property in bindingViresh Kumar
The regulator bindings allow the "<name>-supply" property to define a single parent supply and not a list of parents. Fix the wrong example code present in OPP bindings. While at it also change the compatible string as Rob pointed out earlier that none of A7 implementation have multiple supplies for the CPU core. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-12-06cpuidle: Add a kerneldoc comment to cpuidle_use_deepest_state()Rafael J. Wysocki
Since cpuidle_use_deepest_state() is not static, add a proper kerneldoc comment to it to document its purpose. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-12-06cpuidle: fix improper return value on errorPan Bian
In function cpuidle_add_state_sysfs(), variable ret takes the return value. Its value should be negative on errors. Because ret is reset in the loop, its value will be 0 during the second and after repeat of the loop. If kzalloc() returns a NULL pointer then, it will return 0. It may be better to explicitly assign "-ENOMEM" when the call to kzalloc() fails. Link: https://bugzilla.kernel.org/show_bug.cgi?id=188901 Signed-off-by: Pan Bian <bianpan2016@163.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-12-06x86/suspend: fix false positive KASAN warning on suspend/resumeJosh Poimboeuf
Resuming from a suspend operation is showing a KASAN false positive warning: BUG: KASAN: stack-out-of-bounds in unwind_get_return_address+0x11d/0x130 at addr ffff8803867d7878 Read of size 8 by task pm-suspend/7774 page:ffffea000e19f5c0 count:0 mapcount:0 mapping: (null) index:0x0 flags: 0x2ffff0000000000() page dumped because: kasan: bad access detected CPU: 0 PID: 7774 Comm: pm-suspend Tainted: G B 4.9.0-rc7+ #8 Hardware name: Gigabyte Technology Co., Ltd. Z170X-UD5/Z170X-UD5-CF, BIOS F5 03/07/2016 Call Trace: dump_stack+0x63/0x82 kasan_report_error+0x4b4/0x4e0 ? acpi_hw_read_port+0xd0/0x1ea ? kfree_const+0x22/0x30 ? acpi_hw_validate_io_request+0x1a6/0x1a6 __asan_report_load8_noabort+0x61/0x70 ? unwind_get_return_address+0x11d/0x130 unwind_get_return_address+0x11d/0x130 ? unwind_next_frame+0x97/0xf0 __save_stack_trace+0x92/0x100 save_stack_trace+0x1b/0x20 save_stack+0x46/0xd0 ? save_stack_trace+0x1b/0x20 ? save_stack+0x46/0xd0 ? kasan_kmalloc+0xad/0xe0 ? kasan_slab_alloc+0x12/0x20 ? acpi_hw_read+0x2b6/0x3aa ? acpi_hw_validate_register+0x20b/0x20b ? acpi_hw_write_port+0x72/0xc7 ? acpi_hw_write+0x11f/0x15f ? acpi_hw_read_multiple+0x19f/0x19f ? memcpy+0x45/0x50 ? acpi_hw_write_port+0x72/0xc7 ? acpi_hw_write+0x11f/0x15f ? acpi_hw_read_multiple+0x19f/0x19f ? kasan_unpoison_shadow+0x36/0x50 kasan_kmalloc+0xad/0xe0 kasan_slab_alloc+0x12/0x20 kmem_cache_alloc_trace+0xbc/0x1e0 ? acpi_get_sleep_type_data+0x9a/0x578 acpi_get_sleep_type_data+0x9a/0x578 acpi_hw_legacy_wake_prep+0x88/0x22c ? acpi_hw_legacy_sleep+0x3c7/0x3c7 ? acpi_write_bit_register+0x28d/0x2d3 ? acpi_read_bit_register+0x19b/0x19b acpi_hw_sleep_dispatch+0xb5/0xba acpi_leave_sleep_state_prep+0x17/0x19 acpi_suspend_enter+0x154/0x1e0 ? trace_suspend_resume+0xe8/0xe8 suspend_devices_and_enter+0xb09/0xdb0 ? printk+0xa8/0xd8 ? arch_suspend_enable_irqs+0x20/0x20 ? try_to_freeze_tasks+0x295/0x600 pm_suspend+0x6c9/0x780 ? finish_wait+0x1f0/0x1f0 ? suspend_devices_and_enter+0xdb0/0xdb0 state_store+0xa2/0x120 ? kobj_attr_show+0x60/0x60 kobj_attr_store+0x36/0x70 sysfs_kf_write+0x131/0x200 kernfs_fop_write+0x295/0x3f0 __vfs_write+0xef/0x760 ? handle_mm_fault+0x1346/0x35e0 ? do_iter_readv_writev+0x660/0x660 ? __pmd_alloc+0x310/0x310 ? do_lock_file_wait+0x1e0/0x1e0 ? apparmor_file_permission+0x18/0x20 ? security_file_permission+0x73/0x1c0 ? rw_verify_area+0xbd/0x2b0 vfs_write+0x149/0x4a0 SyS_write+0xd9/0x1c0 ? SyS_read+0x1c0/0x1c0 entry_SYSCALL_64_fastpath+0x1e/0xad Memory state around the buggy address: ffff8803867d7700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8803867d7780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8803867d7800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f4 ^ ffff8803867d7880: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 ffff8803867d7900: 00 00 00 f1 f1 f1 f1 04 f4 f4 f4 f3 f3 f3 f3 00 KASAN instrumentation poisons the stack when entering a function and unpoisons it when exiting the function. However, in the suspend path, some functions never return, so their stack never gets unpoisoned, resulting in stale KASAN shadow data which can cause later false positive warnings like the one above. Reported-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-12-06ACPI / property: Document usage rules for _DSD propertiesRafael J. Wysocki
Following some discussions during the Kernel Summit and LPC, document what can be returned from ACPI _DSD as device properties and when it is valid to use the special PRP0001 device ID. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviwed-by: Mark Brown <broonie@kernel.org>
2016-12-05md: fix refcount problem on mddev when stopping array.NeilBrown
md_open() gets a counted reference on an mddev using mddev_find(). If it ends up returning an error, it must drop this reference. There are two error paths where the reference is not dropped. One only happens if the process is signalled and an awkward time, which is quite unlikely. The other was introduced recently in commit af8d8e6f0. Change the code to ensure the drop the reference when returning an error, and make it harded to re-introduce this sort of bug in the future. Reported-by: Marc Smith <marc.smith@mcc.edu> Fixes: af8d8e6f0315 ("md: changes for MD_STILL_CLOSED flag") Signed-off-by: NeilBrown <neilb@suse.com> Acked-by: Guoqing Jiang <gqjiang@suse.com> Signed-off-by: Shaohua Li <shli@fb.com>
2016-12-05md/r5cache: do r5c_update_log_state after log recoveryZhengyuan Liu
We should update log state after we did a log recovery, current completion may get wrong log state since log->log_start wasn't initalized until we called r5l_recovery_log. At log recovery stage, no lock needed as there is no race conditon. next_checkpoint field will be initialized in r5l_recovery_log too. Signed-off-by: Zhengyuan Liu <liuzhengyuan@kylinos.cn> Signed-off-by: Shaohua Li <shli@fb.com>
2016-12-05md/raid5-cache: adjust the write position of the empty block if no data blocksJackieLiu
When recovery is complete, we write an empty block and record his position first, then make the data-only stripes rewritten done, the location of the empty block as the last checkpoint position to write into the super block. And we should update last_checkpoint to this empty block position. ------------------------------------------------------------------ | old log | empty block | data only stripes | invalid log | ------------------------------------------------------------------ ^ ^ ^ | |- log->last_checkpoint |- log->log_start | |- log->last_cp_seq |- log->next_checkpoint |- log->seq=n |- log->seq=10+n At the same time, if there is no data-only stripes, this scene may appear, | meta1 | meta2 | meta3 | meta 1 is valid, meta 2 is invalid. meta 3 could be valid. so we should The solution is we create a new meta in meta2 with its seq == meta1's seq + 10 and let superblock points to meta2. Signed-off-by: JackieLiu <liuyun01@kylinos.cn> Reviewed-by: Zhengyuan Liu <liuzhengyuan@kylinos.cn> Reviewed-by: Song Liu <songliubraving@fb.com> Signed-off-by: Shaohua Li <shli@fb.com>
2016-12-06Merge branch 'exynos-drm-next' of ↵Dave Airlie
git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next Just refactoring HDMI driver by using infoframe helper function, fixing GSC Kconfig dependency issue and including trivial cleanups. * 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos: drm/exynos: Use VIDEO_SAMSUNG_EXYNOS_GSC=n as GSC Kconfig dependency drm/exynos: gsc: fix spelling mistakes exynos-drm: Fix error messages to print flags and size drm/exynos/hdmi: refactor infoframe code
2016-12-06Merge branch 'drm-next-4.10' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie
into drm-next - lots of code cleanup - lots of bug fixes - expose rpm based fan info via hwmon - lots of clock and powergating fixes - SI register header cleanup and conversion to common format used by newer asics * 'drm-next-4.10' of git://people.freedesktop.org/~agd5f/linux: (54 commits) drm/amdgpu: drop is_display_hung from display funcs drm/amdgpu/uvd: reduce IB parsing overhead on UVD5+ (v2) drm/amdgpu/uvd: consolidate code for fetching addr from ctx drm/amdgpu: Disable DPM in virtualization drm/amdgpu: use AMDGPU_GEM_CREATE_VRAM_CLEARED for VM PD/PTs (v2) drm/amdgpu: improve AMDGPU_GEM_CREATE_VRAM_CLEARED handling (v2) drm/amdgpu: fix error handling in amdgpu_bo_create_restricted drm/amdgpu: fix amdgpu_fill_buffer (v2) drm/amdgpu: remove amdgpu_irq_get_delayed amdgpu: Wrap dev_err() calls on vm faults with printk_ratelimit() amdgpu: Use dev_err() over vanilla printk() in vm_decode_fault() drm/amd/amdgpu: port of DCE v6 to new headers (v3) drm/amdgpu: cleanup unused iterator members for sdma v2.4 drm/amdgpu: cleanup unused iterator members for sdma v3 drm/amdgpu:impl vgt_flush for VI(V5) drm/amdgpu: enable uvd mgcg for Fiji. drm/amdgpu: refine cz uvd clock gate logic. drm/amdgpu: change log level to KERN_INFO in ci_dpm.c drm/amdgpu: always un-gate UVD REGS path. drm/amdgpu/sdma: fix typo in packet setup ...
2016-12-06Merge branch 'drm-etnaviv-next' of git://git.pengutronix.de/lst/linux into ↵Dave Airlie
drm-next - fix dma-buf export path to return correct SG table - trivially implement direct dma-buf mapping - allow DRAW_INSTANCED commands in validator - make the driver work on i.MX6SX, yielding a working 2D/3D stack together with Mareks MXS DRM driver * 'drm-etnaviv-next' of git://git.pengutronix.de/lst/linux: MAINTAINERS: add etnaviv mailinglist drm/etnaviv: move linear window on MC1.0 parts if necessary drm/etnaviv: don't invoke OOM killer from dump code drm/etnaviv: fix gem_prime_get_sg_table to return new SG table drm/etnaviv: Allow DRAW_INSTANCED commands drm/etnaviv: implement dma-buf mmap
2016-12-05netlink: Do not schedule work from sk_destructHerbert Xu
It is wrong to schedule a work from sk_destruct using the socket as the memory reserve because the socket will be freed immediately after the return from sk_destruct. Instead we should do the deferral prior to sk_free. This patch does just that. Fixes: 707693c8a498 ("netlink: Call cb->done from a worker thread") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-05uapi: export nf_log.hstephen hemminger
File is in uapi directory but not being copied on make install_headers Fixes commit 4ec9c8fbbc22 ("netfilter: nft_log: complete NFTA_LOG_FLAGS attr support"). Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-05uapi: export tc_skbmod.hstephen hemminger
Fixes commit 735cffe5d800 ("net_sched: Introduce skbmod action") Not used by iproute2 but maybe in future. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-06Merge branch 'linux-4.10' of git://github.com/skeggsb/linux into drm-nextDave Airlie
- BIT_PERF_PTRS uses 32-bit pointers to its subtables, we were parsing them as 16-bit, causing various issues on newer boards. - Support for MXM on GM20x and up. - More display-related fixes. * 'linux-4.10' of git://github.com/skeggsb/linux: drm/nouveau/mxm: warn more loudly on unsupported DCB version drm/nouveau/mxm: handle DCB 4.1 modification drm/nouveau/bios/mxm: handle digital connector table 1.1 drm/nouveau: Queue hpd_work on (runtime) resume drm/nouveau: Rename acpi_work to hpd_work drm/nouveau/kms/nv50: Fix atomic pageflip events. drm/nouveau/fb/ram/gp100-: fix memory detection where FBP_NUM != FBPA_NUM drm/nouveau/bios/volt: pointers are 32-bit drm/nouveau/bios/vmap: pointers are 32-bit drm/nouveau/bios/timing: pointers are 32-bit drm/nouveau/bios/therm: pointers are 32-bit drm/nouveau/bios/perf: pointers are 32-bit drm/nouveau/bios/iccsense: pointers are 32-bit drm/nouveau/bios/fan: pointers are 32-bit drm/nouveau/bios/cstep: pointers are 32-bit drm/nouveau/bios/boost: pointers are 32-bit
2016-12-06drm/nouveau/mxm: warn more loudly on unsupported DCB versionBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-12-06drm/nouveau/mxm: handle DCB 4.1 modificationBen Skeggs
Allows MXM DCB modification to be handled on GM20x and newer boards. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-12-06drm/nouveau/bios/mxm: handle digital connector table 1.1Ben Skeggs
I suspect the version bump is just to signify that the table now specifies pad macro/links instead of SOR/sublinks. For our usage of the table, just recognising the new version is enough. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-12-05vfio iommu type1: WARN_ON if notifier block is not unregisteredKirti Wankhede
mdev vendor driver should unregister the iommu notifier since the vfio iommu can persist beyond the attachment of the mdev group. WARN_ON will show warning if vendor driver doesn't unregister the notifier and is forced to follow the implementations steps. Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com> Signed-off-by: Neo Jia <cjia@nvidia.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2016-12-05scsi: be2iscsi: set errno on error pathPan Bian
Variable ret is reset in the loop, and its value will be 0 during the second and after repeat of the loop. If pci_alloc_consistent() returns a NULL pointer then, it will leaves with return value 0. 0 means no error, which is contrary to the fact. This patches fixes the bug, explicitly assigning "-ENOMEM" to return variable ret on the path that the call to pci_alloc_consistent() fails. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188951 Signed-off-by: Pan Bian <bianpan2016@163.com> Reviewed-by: Jitendra Bhivare <Jitendra.bhivare@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-05scsi: be2iscsi: set errno on error pathPan Bian
Variable ret is reset in the loop, and its value will be 0 during the second and after repeat of the loop. If pci_alloc_consistent() returns a NULL pointer then, it will leaves with return value 0. 0 means no error, which is contrary to the fact. This patches fixes the bug, explicitly assigning "-ENOMEM" to return variable ret on the path that the call to pci_alloc_consistent() fails. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188941 Signed-off-by: Pan Bian <bianpan2016@163.com> Reviewed-by: Jitendra Bhivare <Jitendra.bhivare@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-05scsi: hpsa: fallback to use legacy REPORT PHYS commandHannes Reinecke
Older SmartArray controllers (eg SmartArray 64xx) do not support the extended REPORT PHYS command, so fallback to use the legacy version here. Signed-off-by: Hannes Reinecke <hare@suse.com> Acked-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-05scsi: scsi_dh_alua: Fix RCU annotationsBart Van Assche
This patch avoids that sparse complains about RCU pointer dereferences. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Hannes Reinecke <hare@suse.de> Cc: tang.junhui <tang.junhui@zte.com.cn> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-05scsi: hpsa: use %phN for short hex dumpsRasmus Villemoes
Passing one instead of 8 or 16 arguments reduces the size of the generated code somewhat: add/remove: 2/3 grow/shrink: 1/4 up/down: 1772/-2137 (-365) There's one more candidate, unique_id_show, but that uses %02X, and I'm not sure it would be ok to start using lowercase there, so I've left it alone for now. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-05scsi: hisi_sas: fix free'ing in probe and removeXiaofei Tan
This patch addresses 4 problems in the module probe/remove: - When hisi_sas_shost_alloc() fails after we alloc shost memory, we should free shost memory before the function returns. - When hisi_sas_probe() fails after we alloc the HBA memories, we should also free the HBA memories. - We should free shost memory at the end of hisi_sas_remove(). - sha->core.shost is set twice, so remove extra set. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Quentin Lambert <lambert.quentin@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-05docs: 00-INDEX: document directories/files with no docsMauro Carvalho Chehab
There are a number of files/directories that don't contain any documentation. They're related to ReST file conversion. As a matter of completeness, since Makefile is also documented there, add an entry for those files too. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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