Linux kernel documentation tree maintained by Jonathan Corbet http://mirrors.hust.edu.cn/git/lwn.git/atom?h=v3.16-rc3 2014-06-20T04:40:36+00:00 2014-06-20T04:40:36+00:00 Linus Torvalds torvalds@linux-foundation.org 2014-06-20T04:40:36+00:00 urn:sha1:0c9bc275304fd1c46584e1e651ce6698e5d61042 Pull drm fixes from Dave Airlie: "This looks bigger than it is, as one of the nouveau firmware fixes ("drm/gf100-/gr: report class data to host on fwmthd failure") regenerates a bunch of the firmware files after changing the assembly by a few lines, without that, its more of a 36 files changed, 370 insertions(+), 129 deletions(-) It contains some vt.c fixes acked by Greg, for rare hard hangs on i915 loading, that also fixes hangs on reload and spurious register write errors. drm core: one fix for uninit memory nouveau: displayport rework caused a few regressions, Ben has been fixing them as the appear, along with some other fixes radeon: pageflipping regression fix, deep color fix, mode validation fixes i915: fbc disable, vga console kick off, backlight fix, divide-by-zero fix" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (33 commits) drm: fix uninitialized acquire_ctx fields (v2) drm/radeon: Fix radeon_irq_kms_pflip_irq_get/put() imbalance Revert "drm/radeon: remove drm_vblank_get|put from pflip handling" drm/radeon: improve dvi_mode_valid drm/radeon: update mode_valid testing for DP drm/radeon: Use dce5/6 hdmi deep color clock setup also on dce8+ drm/nouveau/disp: fix oops in destructor with headless cards drm/gf117/i2c: no aux channels on this chipset drm/nouveau/doc: update the thermal documentation drm/nouveau/pwr: fix typo in fifo wrap handling drm/nv50/disp: fix a potential oops in supervisor handling drm/nouveau/disp/dp: don't touch link config after success drm/nouveau/kms: reference vblank for crtc during pageflip. drm/gk104/fb/ram: fixups from an earlier search+replace drm/nv50/gr: remove an unneeded write while initialising PGRAPH drm/nv50/gr: fix overlap while zeroing zcull regions drm/gf100-/gr: report class data to host on fwmthd failure drm/gk104/ibus: increase various random timeouts drm/gk104/clk: only touch divider for mode we'll be using drm/radeon: Bypass hw lut's for > 8 bpc framebuffer scanout. ... 2014-06-19T00:54:35+00:00 Dave Airlie airlied@redhat.com 2014-06-19T00:54:35+00:00 urn:sha1:884d6147ba19640a40fb45efe64360cdf92cac27 First round of fixes for 3.16-rc, mostly cc: stable, and the vt/vgacon fixes from Daniel [1] to avoid hangs and unclaimed register errors on module load/reload. * tag 'drm-intel-fixes-2014-06-17' of git://anongit.freedesktop.org/drm-intel: drm/i915/bdw: remove erroneous chv specific workarounds from bdw code drm/i915: fix possible refcount leak when resetting forcewake drm/i915: Reorder semaphore deadlock check drm/i95: Initialize active ring->pid to -1 drm/i915: set backlight duty cycle after backlight enable for gen4 drm/i915: Avoid div-by-zero when pixel_multiplier is zero drm/i915: Disable FBC by default also on Haswell and later drm/i915: Kick out vga console drm/i915: Fixup global gtt cleanup vt: Don't ignore unbind errors in vt_unbind vt: Fix up unregistration of vt drivers vt: Fix replacement console check when unbinding 2014-06-16T09:45:45+00:00 Benjamin Herrenschmidt benh@kernel.crashing.org 2014-06-16T09:40:20+00:00 urn:sha1:68986c9f0f4552c34c248501eb0c690553866d6e This reverts commit e1edf18b20076da83dd231dbd2146cbbc31c0b14. This patch was a misguided attempt at fixing offb for LE ppc64 kernels on BE qemu but is just wrong ... it breaks real LE/LE setups, LE with real HW, and existing mixed endian systems that did the fight thing with the appropriate device-tree property. Bad reviewing on my part, sorry. The right fix is to either make qemu change its endian when the guest changes endian (working on that) or to use the existing foreign endian support. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: <stable@vger.kernel.org> [v3.13+] --- 2014-06-12T19:45:50+00:00 Linus Torvalds torvalds@linux-foundation.org 2014-06-12T19:45:50+00:00 urn:sha1:af76004cf8b4f368583bda22d7e348e40a338b91 Pull backlight fixes from Lee Jones: "This merely contains some very basic build/run-time bug fixes" * tag 'backlight-for-linus-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: backlight: gpio-backlight: Fix warning when the GPIO is on a I2C chip video/backlight: s6e63m0: Fix string type mismatch video/backlight: LP8788 needs PWM video/backlight: LP855X needs PWM video/pxa: LCD_CORGI needs BACKLIGHT_CLASS_DEVICE video/backlight: LM3630A needs PWM 2014-06-12T18:32:30+00:00 Linus Torvalds torvalds@linux-foundation.org 2014-06-12T18:32:30+00:00 urn:sha1:682b7c1c8ea8885aa681ddf530d6cf2ad4f2dc15 Pull drm updates from Dave Airlie: "This is the main drm merge window pull request, changes all over the place, mostly normal levels of churn. Highlights: Core drm: More cleanups, fix race on connector/encoder naming, docs updates, object locking rework in prep for atomic modeset i915: mipi DSI support, valleyview power fixes, cursor size fixes, execlist refactoring, vblank improvements, userptr support, OOM handling improvements radeon: GPUVM tuning and large page size support, gart fixes, deep color HDMI support, HDMI audio cleanups nouveau: - displayport rework should fix lots of issues - initial gk20a support - gk110b support - gk208 fixes exynos: probe order fixes, HDMI changes, IPP consolidation msm: debugfs updates, misc fixes ast: ast2400 support, sync with UMS driver tegra: cleanups, hdmi + hw cursor for Tegra 124. panel: fixes existing panels add some new ones. ipuv3: moved from staging to drivers/gpu" * 'drm-next' of git://people.freedesktop.org/~airlied/linux: (761 commits) drm/nouveau/disp/dp: fix tmds passthrough on dp connector drm/nouveau/dp: probe dpcd to determine connectedness drm/nv50-: trigger update after all connectors disabled drm/nv50-: prepare for attaching a SOR to multiple heads drm/gf119-/disp: fix debug output on update failure drm/nouveau/disp/dp: make use of postcursor when its available drm/g94-/disp/dp: take max pullup value across all lanes drm/nouveau/bios/dp: parse lane postcursor data drm/nouveau/dp: fix support for dpms drm/nouveau: register a drm_dp_aux channel for each dp connector drm/g94-/disp: add method to power-off dp lanes drm/nouveau/disp/dp: maintain link in response to hpd signal drm/g94-/disp: bash and wait for something after changing lane power regs drm/nouveau/disp/dp: split link config/power into two steps drm/nv50/disp: train PIOR-attached DP from second supervisor drm/nouveau/disp/dp: make use of existing output data for link training drm/gf119/disp: start removing direct vbios parsing from supervisor drm/nv50/disp: start removing direct vbios parsing from supervisor drm/nouveau/disp/dp: maintain receiver caps in response to hpd signal drm/nouveau/disp/dp: create subclass for dp outputs ... 2014-06-11T23:09:14+00:00 Linus Torvalds torvalds@linux-foundation.org 2014-06-11T23:09:14+00:00 urn:sha1:4251c2a67011801caecd63671f26dd8c9aedb24c Pull module updates from Rusty Russell: "Most of this is cleaning up various driver sysfs permissions so we can re-add the perm check (we unified the module param and sysfs checks, but the module ones were stronger so we weakened them temporarily). Param parsing gets documented, and also "--" now forces args to be handed to init (and ignored by the kernel). Module NX/RO protections get tightened: we now set them before calling parse_args()" * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: module: set nx before marking module MODULE_STATE_COMING. samples/kobject/: avoid world-writable sysfs files. drivers/hid/hid-picolcd_fb: avoid world-writable sysfs files. drivers/staging/speakup/: avoid world-writable sysfs files. drivers/regulator/virtual: avoid world-writable sysfs files. drivers/scsi/pm8001/pm8001_ctl.c: avoid world-writable sysfs files. drivers/hid/hid-lg4ff.c: avoid world-writable sysfs files. drivers/video/fbdev/sm501fb.c: avoid world-writable sysfs files. drivers/mtd/devices/docg3.c: avoid world-writable sysfs files. speakup: fix incorrect perms on speakup_acntsa.c cpumask.h: silence warning with -Wsign-compare Documentation: Update kernel-parameters.tx param: hand arguments after -- straight to init modpost: Fix resource leak in read_dump() 2014-06-11T21:06:55+00:00 Linus Torvalds torvalds@linux-foundation.org 2014-06-11T21:06:55+00:00 urn:sha1:7f33e7241d3dbad3c0563fd1fc79fc9380b5c351 Pull pwm changes from Thierry Reding: "The majority of these changes are cleanups and fixes across all drivers. Redundant error messages are removed and more PWM controllers set the .can_sleep flag to signal that they can't be used in atomic context. Support is added for the Broadcom Kona family of SoCs and the Intel LPSS driver can now probe PCI devices in addition to ACPI devices. Upon shutdown, the pwm-backlight driver will now power off the backlight. It also uses the new descriptor-based GPIO API for more concise GPIO handling. A large chunk of these changes also converts platforms to use the lookup mechanism rather than relying on the global number space to reference PWM devices. This is largely in preparation for more unification and cleanups in future patches. Eventually it will allow the legacy PWM API to be removed" * tag 'pwm/for-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (38 commits) pwm: fsl-ftm: set pwm_chip can_sleep flag pwm: ab8500: Fix wrong value shift for disable/enable PWM pwm: samsung: do not set manual update bit in pwm_samsung_config pwm: lp3943: Set pwm_chip can_sleep flag pwm: atmel: set pwm_chip can_sleep flag pwm: mxs: set pwm_chip can_sleep flag pwm: tiehrpwm: inline accessor functions pwm: tiehrpwm: don't build PM related functions when not needed pwm-backlight: retrieve configured PWM period leds: leds-pwm: retrieve configured PWM period ARM: pxa: hx4700: use PWM_LOOKUP to initialize struct pwm_lookup ARM: shmobile: armadillo: use PWM_LOOKUP to initialize struct pwm_lookup ARM: OMAP3: Beagle: use PWM_LOOKUP to initialize struct pwm_lookup pwm: modify PWM_LOOKUP to initialize all struct pwm_lookup members ARM: pxa: hx4700: initialize all the struct pwm_lookup members ARM: OMAP3: Beagle: initialize all the struct pwm_lookup members pwm: renesas-tpu: remove unused struct tpu_pwm_platform_data ARM: shmobile: armadillo: initialize all struct pwm_lookup members pwm: add period and polarity to struct pwm_lookup pwm: twl: Really disable twl6030 PWMs ... 2014-06-11T08:38:41+00:00 Jani Nikula jani.nikula@intel.com 2014-06-11T08:14:08+00:00 urn:sha1:ce9557b9fe17012dea2447e643a1047c27a00838 vt/vgacon fixes to avoid hangs, unclaimed register errors on module load, reload: vt: Fix replacement console check when unbinding vt: Fix up unregistration of vt drivers vt: Don't ignore unbind errors in vt_unbind drm/i915: Fixup global gtt cleanup drm/i915: Kick out vga console Link: http://lkml.kernel.org/r/1401980308-5116-1-git-send-email-daniel.vetter@ffwll.ch Signed-off-by: Jani Nikula <jani.nikula@intel.com> 2014-06-09T19:03:47+00:00 Daniel Vetter daniel.vetter@ffwll.ch 2014-06-05T14:20:46+00:00 urn:sha1:a4de05268e674e8ed31df6348269e22d6c6a1803 Touching the VGA resources on an IVB EFI machine causes hard hangs when we then kick out the efifb. Ouch. Apparently this also prevents unclaimed register errors on hsw and hard machine hangs on my i855gm when trying to unbind fbcon. Also, we want this to make I915_FBDEV=n safe. v2: Rebase and pimp commit message. v3: We also need to unregister the vga console, otherwise the unbind of the fb console before module unload might resurrect it again. v4: Ignore errors when the vga console is already unregistered - this can happen when e.g. reloading i915.ko. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=67813 Cc: David Herrmann <dh.herrmann@gmail.com> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: linux-fbdev@vger.kernel.org Cc: Jani Nikula <jani.nikula@linux.intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> (v1) Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> 2014-06-05T09:00:53+00:00 Tony Lindgren tony@atomide.com 2014-05-09T01:24:55+00:00 urn:sha1:ab1e59b4dc0370734ab3afb8de0c10a6f5a211ad If the GPIO for the backlight is on an I2C chip, we currently get nasty warnings like this during the boot: WARNING: CPU: 0 PID: 6 at drivers/gpio/gpiolib.c:2364 gpiod_set_raw_value+0x40/0x4c() Modules linked in: CPU: 0 PID: 6 Comm: kworker/u2:0 Not tainted 3.15.0-rc4-12393-gcde9f4e #400 Workqueue: deferwq deferred_probe_work_func [<c0014cbc>] (unwind_backtrace) from [<c001191c>] (show_stack+0x10/0x14) [<c001191c>] (show_stack) from [<c0566ae0>] (dump_stack+0x80/0x9c) [<c0566ae0>] (dump_stack) from [<c003f61c>] (warn_slowpath_common+0x68/0x8c) [<c003f61c>] (warn_slowpath_common) from [<c003f65c>] (warn_slowpath_null+0x1c/0x24) [<c003f65c>] (warn_slowpath_null) from [<c02f7e10>] (gpiod_set_raw_value+0x40/0x4c) [<c02f7e10>] (gpiod_set_raw_value) from [<c0308fbc>] (gpio_backlight_update_status+0x4c/0x74) [<c0308fbc>] (gpio_backlight_update_status) from [<c030914c>] (gpio_backlight_probe+0x168/0x254) [<c030914c>] (gpio_backlight_probe) from [<c0378fa8>] (platform_drv_probe+0x18/0x48) [<c0378fa8>] (platform_drv_probe) from [<c0377c40>] (driver_probe_device+0x10c/0x238) [<c0377c40>] (driver_probe_device) from [<c0376330>] (bus_for_each_drv+0x44/0x8c) [<c0376330>] (bus_for_each_drv) from [<c0377afc>] (device_attach+0x74/0x8c) [<c0377afc>] (device_attach) from [<c03771c4>] (bus_probe_device+0x88/0xb0) [<c03771c4>] (bus_probe_device) from [<c03775c8>] (deferred_probe_work_func+0x64/0x94) [<c03775c8>] (deferred_probe_work_func) from [<c00572e8>] (process_one_work+0x1b4/0x4bc) [<c00572e8>] (process_one_work) from [<c00579d0>] (worker_thread+0x11c/0x398) [<c00579d0>] (worker_thread) from [<c005dfd8>] (kthread+0xc8/0xe4) [<c005dfd8>] (kthread) from [<c000e768>] (ret_from_fork+0x14/0x2c) Fix this by using gpio_set_value_cansleep() as suggested in drivers/gpio/gpiolib.c:2364. This is what the other backlight drivers are also doing. Signed-off-by: Tony Lindgren <tony@atomide.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>