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* usb: dwc3: Add Qualcomm DWC3 glue layer driverIvan T. Ivanov2014-09-123-0/+140
| | | | | | | | | | DWC3 glue layer is hardware layer around Synopsys DesignWare USB3 core. Its purpose is to supply Synopsys IP with required clocks, voltages and interface it with the rest of the SoC. Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Andy Gross <agross@codeaurora.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: dwc3: qcom: Add device tree bindingIvan T. Ivanov2014-09-122-0/+105
| | | | | | | | | | | | QCOM USB3.0 core wrapper consist of USB3.0 IP from Synopsys (SNPS) and HS, SS PHY's control and configuration registers. It could operate in device mode (SS, HS, FS) and host mode (SS, HS, FS, LS). Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Andy Gross <agross@codeaurora.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: udc-core: add utility for bus resetPeter Chen2014-09-122-0/+23
| | | | | | | | | The udc driver can notify the udc core that bus reset occurs by calling this utility, the core will notify gadget driver this information and update gadget state accordingly. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: Add xilinx usb2 device supportSubbaraya Sundeep Bhatta2014-09-123-0/+2196
| | | | | | | | | Xilinx USB2 device is a soft IP which supports both full and high speed USB 2.0 data transfers. This patch adds xilinx usb2 device driver support. Signed-off-by: Subbaraya Sundeep Bhatta <sbhatta@xilinx.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: doc: udc-xilinx: Add devicetree bindingsSubbaraya Sundeep Bhatta2014-09-121-0/+18
| | | | | | | Add devicetree bindings for Xilinx udc driver. Signed-off-by: Subbaraya Sundeep Bhatta <sbhatta@xilinx.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: f_fs: replace BUG in dead-code with less serious WARN_ONMichal Nazarewicz2014-09-111-1/+2
| | | | | | | | | | Even though the BUG() in __ffs_event_add is a dead-code, it is still better to warn rather then crash the system if that code ever gets executed. Reported-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: f_fs: add ioctl returning ep descriptorRobert Baldyga2014-09-092-0/+29
| | | | | | | | | | This patch introduces ioctl named FUNCTIONFS_ENDPOINT_DESC, which returns endpoint descriptor to userspace. It works only if function is active. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: dbgp: add reset API at usb_gadget_driverPeter Chen2014-09-091-0/+1
| | | | | | | | | Add reset API at usb_gadget_driver, it calls disconnect handler currently, but may do different things in future. Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: gadgetfs: add reset API at usb_gadget_driverPeter Chen2014-09-091-0/+1
| | | | | | | | | Add reset API at usb_gadget_driver, it calls disconnect handler currently, but may do different things in future. Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: configfs: add reset API at usb_gadget_driverPeter Chen2014-09-091-0/+1
| | | | | | | | | Add reset API at usb_gadget_driver, it calls disconnect handler currently, but may do different things in future. Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: composite: add reset API at usb_gadget_driverPeter Chen2014-09-091-0/+1
| | | | | | | | | Add reset API at usb_gadget_driver, it calls disconnect handler currently, but may do different things in future. Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: add reset API at usb_gadget_driverPeter Chen2014-09-091-0/+3
| | | | | | | | | | | | | | | | | | Adding reset API for UDC bus reset handler is useful for below two issues. Current disconnect API at usb_gadget_driver is also invoked at udc's bus reset handler, but the document says it is invoked when the host is disconnected. Besides, we may expect the gadget_driver to do different things for host sends bus reset and host disconnects gadget, eg, we may not want to flush dirty page for mass storage at bus reset, and want to do it at disconnection. Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: f_fs: signedness bug in __ffs_func_bind_do_descs()Dan Carpenter2014-09-091-1/+2
| | | | | | | | | We need "idx" to be signed for the error handling to work. Fixes: 6d5c1c77bbf9 ('usb: gadget: f_fs: fix the redundant ep files problem') Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: f_uvc: use usb_gstrings_attachAndrzej Pietrasiewicz2014-09-091-17/+11
| | | | | | | | | | | | Attach strings to gadget with usb_strings_attach. It is required for correct instantiation of functions more than once: instead of modifying the local uvc_en_us_strings a function instance specific copy is created with usb_gstrings_attach. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Tested-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: f_uvc: remove compatibility layerAndrzej Pietrasiewicz2014-09-092-177/+0
| | | | | | | | | There are no users of the old interface left. Remove it. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Tested-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: webcam: convert webcam to new interface of f_uvcAndrzej Pietrasiewicz2014-09-093-16/+40
| | | | | | | | | Use the new function interface of f_uvc. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Tested-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: f_uvc: convert f_uvc to new function interfaceAndrzej Pietrasiewicz2014-09-095-30/+219
| | | | | | | | | | | | Use the new function registration interface. It is required in order to integrate configfs support. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Tested-by: Michael Grzeschik <m.grzeschik@pengutronix.de> [Updated copyright years] Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: uvc: separately compile some components of f_uvcAndrzej Pietrasiewicz2014-09-0912-37/+118
| | | | | | | | | | | | | | Compile uvc_queue, uvc_v4l2, uvc_video separately so that later they can be all combined in a separately compiled f_uvc. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Tested-by: Michael Grzeschik <m.grzeschik@pengutronix.de> [Make uvc_v4l2_ioctl_ops non-static] [Rename __UVC__V4L2__H__ and __UVC__VIDEO__H__] [Update MAINTAINERS] Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: uvc: rename functions to avoid conflicts with host uvcAndrzej Pietrasiewicz2014-09-094-55/+56
| | | | | | | | | | | | | | Prepare for separate compilation of uvc function's components. Some symbols will have to be exported, so rename to avoid conflicts with functions of the same name in host uvc. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Tested-by: Michael Grzeschik <m.grzeschik@pengutronix.de> [Rename uvc_video_pump and uvc_queue_head as well] [Rename forgotten uvc_queue_cancel instance in a comment] Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: gadget: zero: Fix warning generated by kbuildAmit Virdi2014-09-091-2/+2
| | | | | | | | | | | | | The kbuild test bot generated the warning: drivers/usb/gadget/function/f_sourcesink.c:1498: warning: comparison is always false due to limited range of data type This patch fixes it. Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Amit Virdi <amit.virdi@st.com> CC: Felipe Balbi <balbi@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* Merge tag 'v3.17-rc4' into nextFelipe Balbi2014-09-08693-3450/+7009
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | Merge Linux 3.17-rc4 here so we have all the latest fixes on next too. This also cleans up a few conflicts when applying patches. Signed-off-by: Felipe Balbi <balbi@ti.com> Conflicts: drivers/usb/gadget/Makefile drivers/usb/gadget/function/Makefile drivers/usb/gadget/legacy/Makefile drivers/usb/phy/phy-samsung-usb.h
| * Linux 3.17-rc4v3.17-rc4Linus Torvalds2014-09-071-1/+1
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| * Documentation: new page link in SubmittingPatchesSudip Mukherjee2014-09-071-0/+1
| | | | | | | | | | | | | | | | new link for - How to piss off a Linux kernel subsystem maintainer Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * Documentation: NFS/RDMA: Document separate Kconfig symbolsPaul Bolle2014-09-071-7/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The NFS/RDMA Kconfig symbol was split into separate options for client and server in commit 2e8c12e1b765 ("xprtrdma: add separate Kconfig options for NFSoRDMA client and server support"). Update the documentation to reflect this split. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: "J. Bruce Fields" <bfields@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * Documentation: misc-devices: Rename freefall.c from hpfall.c in lis2lv02dMasanari Iida2014-09-071-1/+1
| | | | | | | | | | | | | | | | | | hpfall.c was renamed to freefall.c in 3.16, but this file still refer to hpfall.c instead of freefall.c Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * Documentation: i2c: rename variable "register" to "reg"Jose Manuel Alarcon Roldan2014-09-071-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The example code provided with the i2c device interface documentation won't compile since it uses the reserved word "register" to name a variable. The compiler fails with this error message: error: expected identifier or '(' before '=' token __u8 register = 0x20; /* Device register to access */ ^ Rename the variable "register" to simply "reg" in the example code. Another couple of typos has been fixed as well. [Change "! =" to "!=".] Signed-off-by: Jose Alarcon Roldan <jose.alarcon.roldan@gmail.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * Documentation: seq_file: Document seq_open_private(), seq_release_private()Rob Jones2014-09-071-0/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | Despite the fact that these functions have been around for years, they are little used (only 15 uses in 13 files at the preseht time) even though many other files use work-arounds to achieve the same result. By documenting them, hopefully they will become more widely used. Signed-off-by: Rob Jones <rob.jones@codethink.co.uk> Acked-by: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * Merge tag 'pm+acpi-3.17-rc4' of ↵Linus Torvalds2014-09-0712-34/+122
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI and power management fixes from Rafael Wysocki: "These are regression fixes (ACPI sysfs, ACPI video, suspend test), ACPI cpuidle deadlock fix, missing runtime validation of ACPI _DSD output, a fix and a new CPU ID for the RAPL driver, new blacklist entry for the ACPI EC driver and a couple of trivial cleanups (intel_pstate and generic PM domains). Specifics: - Fix for recently broken test_suspend= command line argument (Rafael Wysocki). - Fixes for regressions related to the ACPI video driver caused by switching the default to native backlight handling in 3.16 from Hans de Goede. - Fix for a sysfs attribute of ACPI device objects that returns stale values sometimes due to the fact that they are cached instead of executing the appropriate method (_SUN) every time (broken in 3.14). From Yasuaki Ishimatsu. - Fix for a deadlock between cpuidle_lock and cpu_hotplug.lock in the ACPI processor driver from Jiri Kosina. - Runtime output validation for the ACPI _DSD device configuration object missing from the support for it that has been introduced recently. From Mika Westerberg. - Fix for an unuseful and misleading RAPL (Running Average Power Limit) domain detection message in the RAPL driver from Jacob Pan. - New Intel Haswell CPU ID for the RAPL driver from Jason Baron. - New Clevo W350etq blacklist entry for the ACPI EC driver from Lan Tianyu. - Cleanup for the intel_pstate driver and the core generic PM domains code from Gabriele Mazzotta and Geert Uytterhoeven" * tag 'pm+acpi-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lock ACPI / scan: not cache _SUN value in struct acpi_device_pnp cpufreq: intel_pstate: Remove unneeded variable powercap / RAPL: change domain detection message powercap / RAPL: add support for CPU model 0x3f PM / domains: Make generic_pm_domain.name const PM / sleep: Fix test_suspend= command line option ACPI / EC: Add msi quirk for Clevo W350etq ACPI / video: Disable native_backlight on HP ENVY 15 Notebook PC ACPI / video: Add a disable_native_backlight quirk ACPI / video: Fix use_native_backlight selection logic ACPICA: ACPI 5.1: Add support for runtime validation of _DSD package.
| | *-----. Merge branches 'pm-sleep', 'powercap', 'pm-domains' and 'pm-cpufreq'Rafael J. Wysocki2014-09-056-22/+26
| | |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pm-sleep: PM / sleep: Fix test_suspend= command line option * powercap: powercap / RAPL: change domain detection message powercap / RAPL: add support for CPU model 0x3f * pm-domains: PM / domains: Make generic_pm_domain.name const * pm-cpufreq: cpufreq: intel_pstate: Remove unneeded variable
| | | | | | * cpufreq: intel_pstate: Remove unneeded variableGabriele Mazzotta2014-09-031-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It should have been removed with commit d1b6848590af ("cpufreq / intel_pstate: Optimize intel_pstate_set_policy") Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | | | | * | PM / domains: Make generic_pm_domain.name constGeert Uytterhoeven2014-09-031-1/+1
| | | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | | | * | powercap / RAPL: change domain detection messageJacob Pan2014-09-031-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many CPUs do not support complete set of RAPL domains, as a result this detection failed message is very misleading and can be annoying. [ 5.082632] intel_rapl: RAPL domain core detection failed [ 5.088370] intel_rapl: RAPL domain uncore detection failed So lower the warning message to info and only print out the RAPL domains that are supported. Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | | | * | powercap / RAPL: add support for CPU model 0x3fJason Baron2014-09-031-0/+1
| | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I've confirmed that monitoring the package power usage as well as setting power limits appear to be working as expected. Supports the package and dram domains. Tested aginst cpu: Intel(R) Xeon(R) CPU E5-2650 v3 @ 2.30GHz Signed-off-by: Jason Baron <jbaron@akamai.com> Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | | * | PM / sleep: Fix test_suspend= command line optionRafael J. Wysocki2014-09-033-13/+21
| | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After commit d431cbc53cb7 (PM / sleep: Simplify sleep states sysfs interface code) the pm_states[] array is not populated initially, which causes setup_test_suspend() to always fail and the suspend testing during boot doesn't work any more. Fix the problem by using pm_labels[] instead of pm_states[] in setup_test_suspend() and storing a pointer to the label of the sleep state to test rather than the number representing it, because the connection between the state numbers and labels is only established by suspend_set_ops(). Fixes: d431cbc53cb7 (PM / sleep: Simplify sleep states sysfs interface code) Reported-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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| | *-. \ Merge branches 'acpi-video' and 'acpi-ec'Rafael J. Wysocki2014-09-052-2/+47
| | |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * acpi-video: ACPI / video: Disable native_backlight on HP ENVY 15 Notebook PC ACPI / video: Add a disable_native_backlight quirk ACPI / video: Fix use_native_backlight selection logic * acpi-ec: ACPI / EC: Add msi quirk for Clevo W350etq
| | | | * | ACPI / EC: Add msi quirk for Clevo W350etqLan Tianyu2014-09-021-0/+4
| | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clevo W350etq's EC will not produce GPE interrupt some time after booting. The ACPI notify event won't trigger when the issue takes place. After debugging, adding msi quirk for the machine can fix the issue. This patch is to add msi quirk for the machine. Link: https://bugzilla.kernel.org/show_bug.cgi?id=77431 Reported-and-tested-by: qbanin@gmail.com Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | | * | ACPI / video: Disable native_backlight on HP ENVY 15 Notebook PCHans de Goede2014-09-021-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Link: https://bugs.freedesktop.org/show_bug.cgi?id=81515 Reported-and-tested-by: Hohahiu <rakothedin@gmail.com> Cc: 3.16+ <stable@vger.kernel.org> # 3.16+ Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | | * | ACPI / video: Add a disable_native_backlight quirkHans de Goede2014-09-021-0/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some laptops have a working acpi_video backlight control, and using native backlight on these causes a regression where backlight control does not work when userspace is not handling brightness key events. Disable native_backlight on these to fix this. Link: https://bugzilla.kernel.org/show_bug.cgi?id=81691 Reported-and-tested-by: Andre Müller <andre.muller@web.de> Cc: 3.16+ <stable@vger.kernel.org> # 3.16+ Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | | * | ACPI / video: Fix use_native_backlight selection logicHans de Goede2014-09-021-2/+2
| | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 751109aad583 ("ACPI / video: Change the default for video.use_native_backlight to 1") has changed the default for use_native_backlight from 0 to 1, but instead of changing use_native_backlight_dmi to true, and leaving use_native_backlight_param at -1, it has changed use_native_backlight_param to 1. This causes acpi_video_use_native_backlight() to always think that a value was specified through the param, making it impossible to add a dmi based quirk to force 0 now that the default is 1. This fixes this by restoring the use_native_backlight_param default to -1, and instead setting the use_native_backlight_dmi default to true. Fixes: 751109aad583 (ACPI / video: Change the default for video.use_native_backlight to 1) Cc: 3.16+ <stable@vger.kernel.org> # 3.16+ Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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| | *-. \ Merge branches 'acpica', 'acpi-processor' and 'acpi-scan'Rafael J. Wysocki2014-09-053-10/+10
| | |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * acpica: ACPICA: ACPI 5.1: Add support for runtime validation of _DSD package. * acpi-processor: ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lock * acpi-scan: ACPI / scan: not cache _SUN value in struct acpi_device_pnp
| | | | * | ACPI / scan: not cache _SUN value in struct acpi_device_pnpYasuaki Ishimatsu2014-09-032-8/+8
| | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The _SUN device indentification object is not guaranteed to return the same value every time it is executed, so we should not cache its return value, but rather execute it every time as needed. If it is cached, an incorrect stale value may be used in some situations. This issue was exposed by commit 202317a573b2 (ACPI / scan: Add acpi_device objects for all device nodes in the namespace). Fix it by avoiding to cache the return value of _SUN. Fixes: 202317a573b2 (ACPI / scan: Add acpi_device objects for all device nodes in the namespace) Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: 3.14+ <stable@vger.kernel.org> # 3.14+ [ rjw: Changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | | * | ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lockJiri Kosina2014-09-031-2/+2
| | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a following AB-BA dependency between cpu_hotplug.lock and cpuidle_lock: 1) cpu_hotplug.lock -> cpuidle_lock enable_nonboot_cpus() _cpu_up() cpu_hotplug_begin() LOCK(cpu_hotplug.lock) cpu_notify() ... acpi_processor_hotplug() cpuidle_pause_and_lock() LOCK(cpuidle_lock) 2) cpuidle_lock -> cpu_hotplug.lock acpi_os_execute_deferred() workqueue ... acpi_processor_cst_has_changed() cpuidle_pause_and_lock() LOCK(cpuidle_lock) get_online_cpus() LOCK(cpu_hotplug.lock) Fix this by reversing the order acpi_processor_cst_has_changed() does thigs -- let it first execute the protection against CPU hotplug by calling get_online_cpus() and obtain the cpuidle lock only after that (and perform the symmentric change when allowing CPUs hotplug again and dropping cpuidle lock). Spotted by lockdep. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: All applicable <stable@vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * | ACPICA: ACPI 5.1: Add support for runtime validation of _DSD package.Mika Westerberg2014-09-021-0/+39
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds ACPICA kernel runtime support to validate contents/format of the _DSD package, similar to the iASL support. Ported by Mika Westerberg. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | Merge branch 'for-linus' of ↵Linus Torvalds2014-09-074-14/+18
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull filesystem fixes from Al Viro: "Several bugfixes (all of them -stable fodder). Alexey's one deals with double mutex_lock() in UFS (apparently, nobody has tried to test "ufs: sb mutex merge + mutex_destroy" on something like file creation/removal on ufs). Mine deal with two kinds of umount bugs, in umount propagation and in handling of automounted submounts, both resulting in bogus transient EBUSY from umount" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: ufs: fix deadlocks introduced by sb mutex merge fix EBUSY on umount() from MNT_SHRINKABLE get rid of propagate_umount() mistakenly treating slaves as busy.
| | * | ufs: fix deadlocks introduced by sb mutex mergeAlexey Khoroshilov2014-09-072-13/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 0244756edc4b ("ufs: sb mutex merge + mutex_destroy") introduces deadlocks in ufs_new_inode() and ufs_free_inode(). Most callers of that functions acqure the mutex by themselves and ufs_{new,free}_inode() do that via lock_ufs(), i.e we have an unavoidable double lock. The patch proposes to resolve the issue by making sure that ufs_{new,free}_inode() are not called with the mutex held. Found by Linux Driver Verification project (linuxtesting.org). Cc: stable@vger.kernel.org # 3.16 Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * | fix EBUSY on umount() from MNT_SHRINKABLEAl Viro2014-08-301-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need the parents of victims alive until namespace_unlock() gets to dput() of the (ex-)mountpoints. However, that screws up the "is it busy" checks in case when we have shrinkable mounts that need to be killed. Solution: go ahead and decrement refcounts of parents right in umount_tree(), increment them again just before dropping rwsem in namespace_unlock() (and let the loop in the end of namespace_unlock() finally drop those references for good, as we do now). Parents can't get freed until we drop rwsem - at least one reference is kept until then, both in case when parent is among the victims and when it is not. So they'll still be around when we get to namespace_unlock(). Cc: stable@vger.kernel.org # 3.12+ Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * | get rid of propagate_umount() mistakenly treating slaves as busy.Al Viro2014-08-302-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The check in __propagate_umount() ("has somebody explicitly mounted something on that slave?") is done *before* taking the already doomed victims out of the child lists. Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds2014-09-072-12/+12
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull RCU fix from Ingo Molnar: "A boot hang fix for the offloaded callback RCU model (RCU_NOCB_CPU=y && (TREE_CPU=y || TREE_PREEMPT_RC)) in certain bootup scenarios" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: rcu: Make nocb leader kthreads process pending callbacks after spawning
| | * \ \ Merge branch 'rcu/urgent' of ↵Ingo Molnar2014-09-032-12/+12
| | |\ \ \ | | | |_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/urgent Pull an RCU fix from Paul E. McKenney: "This series contains a single commit fixing an initialization bug reported by Amit Shah and fixed by Pranith Kumar (and tested by Amit). This bug results in a boot-time hang in callback-offloaded configurations where callbacks were posted before the offloading ('rcuo') kthreads were created." Signed-off-by: Ingo Molnar <mingo@kernel.org>
| | | * | rcu: Make nocb leader kthreads process pending callbacks after spawningPranith Kumar2014-08-282-12/+12
| | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The nocb callbacks generated before the nocb kthreads are spawned are enqueued in the nocb queue for later processing. Commit fbce7497ee5af ("rcu: Parallelize and economize NOCB kthread wakeups") introduced nocb leader kthreads which checked the nocb_leader_wake flag to see if there were any such pending callbacks. A case was reported in which newly spawned leader kthreads were not processing the pending callbacks as this flag was not set, which led to a boot hang. The following commit ensures that the newly spawned nocb kthreads process the pending callbacks by allowing the kthreads to run immediately after spawning instead of waiting. This is done by inverting the logic of nocb_leader_wake tests to nocb_leader_sleep which allows us to use the default initialization of this flag to 0 to let the kthreads run. Reported-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Link: http://www.spinics.net/lists/kernel/msg1802899.html [ paulmck: Backported to v3.17-rc2. ] Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Tested-by: Amit Shah <amit.shah@redhat.com>
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