/* * wm8960.h -- WM8960 Soc Audio driver * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef _WM8960_H #define _WM8960_H /* WM8960 register space */ #define WM8960_CACHEREGNUM 56 #define WM8960_LINVOL 0x0 #define WM8960_RINVOL 0x1 #define WM8960_LOUT1 0x2 #define WM8960_ROUT1 0x3 #define WM8960_CLOCK1 0x4 #define WM8960_DACCTL1 0x5 #define WM8960_DACCTL2 0x6 #define WM8960_IFACE1 0x7 #define WM8960_CLOCK2 0x8 #define WM8960_IFACE2 0x9 #define WM8960_LDAC 0xa #define WM8960_RDAC 0xb #define WM8960_RESET 0xf #define WM8960_3D 0x10 #define WM8960_ALC1 0x11 #define WM8960_ALC2 0x12 #define WM8960_ALC3 0x13 #define WM8960_NOISEG 0x14 #define WM8960_LADC 0x15 #define WM8960_RADC 0x16 #define WM8960_ADDCTL1 0x17 #define WM8960_ADDCTL2 0x18 #define WM8960_POWER1 0x19 #define WM8960_POWER2 0x1a #define WM8960_ADDCTL3 0x1b #define WM8960_APOP1 0x1c #define WM8960_APOP2 0x1d #define WM8960_LINPATH 0x20 #define WM8960_RINPATH 0x21 #define WM8960_LOUTMIX 0x22 #define WM8960_ROUTMIX 0x25 #define WM8960_MONOMIX1 0x26 #define WM8960_MONOMIX2 0x27 #define WM8960_LOUT2 0x28 #define WM8960_ROUT2 0x29 #define WM8960_MONO 0x2a #define WM8960_INBMIX1 0x2b #define WM8960_INBMIX2 0x2c #define WM8960_BYPASS1 0x2d #define WM8960_BYPASS2 0x2e #define WM8960_POWER3 0x2f #define WM8960_ADDCTL4 0x30 #define WM8960_CLASSD1 0x31 #define WM8960_CLASSD3 0x33 #define WM8960_PLL1 0x34 #define WM8960_PLL2 0x35 #define WM8960_PLL3 0x36 #define WM8960_PLL4 0x37 /* * WM8960 Clock dividers */ #define WM8960_SYSCLKDIV 0 #define WM8960_DACDIV 1 #define WM8960_OPCLKDIV 2 #define WM8960_DCLKDIV 3 #define WM8960_TOCLKSEL 4 #define WM8960_SYSCLK_DIV_1 (0 << 1) #define WM8960_SYSCLK_DIV_2 (2 << 1) #define WM8960_SYSCLK_MCLK (0 << 0) #define WM8960_SYSCLK_PLL (1 << 0) #define WM8960_SYSCLK_AUTO (2 << 0) #define WM8960_DAC_DIV_1 (0 << 3) #define WM8960_DAC_DIV_1_5 (1 << 3) #define WM8960_DAC_DIV_2 (2 << 3) #define WM8960_DAC_DIV_3 (3 << 3) #define WM8960_DAC_DIV_4 (4 << 3) #define WM8960_DAC_DIV_5_5 (5 << 3) #define WM8960_DAC_DIV_6 (6 << 3) #define WM8960_DCLK_DIV_1_5 (0 << 6) #define WM8960_DCLK_DIV_2 (1 << 6) #define WM8960_DCLK_DIV_3 (2 << 6) #define WM8960_DCLK_DIV_4 (3 << 6) #define WM8960_DCLK_DIV_6 (4 << 6) #define WM8960_DCLK_DIV_8 (5 << 6) #define WM8960_DCLK_DIV_12 (6 << 6) #define WM8960_DCLK_DIV_16 (7 << 6) #define WM8960_TOCLK_F19 (0 << 1) #define WM8960_TOCLK_F21 (1 << 1) #define WM8960_OPCLK_DIV_1 (0 << 0) #define WM8960_OPCLK_DIV_2 (1 << 0) #define WM8960_OPCLK_DIV_3 (2 << 0) #define WM8960_OPCLK_DIV_4 (3 << 0) #define WM8960_OPCLK_DIV_5_5 (4 << 0) #define WM8960_OPCLK_DIV_6 (5 << 0) #endif und?id=39cb2c9a316e77f6dfba96c543e55b6672d5a37e'>sound/soc/codecs/cx20442.h
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authorLinus Torvalds <torvalds@linux-foundation.org>2017-01-29 13:50:06 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-01-29 13:50:06 -0800
commit39cb2c9a316e77f6dfba96c543e55b6672d5a37e (patch)
tree98fe974ee4e20121253de7f61fc8d01bdb3821c1 /sound/soc/codecs/cx20442.h
parent2c5d9555d6d937966d79d4c6529a5f7b9206e405 (diff)
drm/i915: Check for NULL i915_vma in intel_unpin_fb_obj()
I've seen this trigger twice now, where the i915_gem_object_to_ggtt() call in intel_unpin_fb_obj() returns NULL, resulting in an oops immediately afterwards as the (inlined) call to i915_vma_unpin_fence() tries to dereference it. It seems to be some race condition where the object is going away at shutdown time, since both times happened when shutting down the X server. The call chains were different: - VT ioctl(KDSETMODE, KD_TEXT): intel_cleanup_plane_fb+0x5b/0xa0 [i915] drm_atomic_helper_cleanup_planes+0x6f/0x90 [drm_kms_helper] intel_atomic_commit_tail+0x749/0xfe0 [i915] intel_atomic_commit+0x3cb/0x4f0 [i915] drm_atomic_commit+0x4b/0x50 [drm] restore_fbdev_mode+0x14c/0x2a0 [drm_kms_helper] drm_fb_helper_restore_fbdev_mode_unlocked+0x34/0x80 [drm_kms_helper] drm_fb_helper_set_par+0x2d/0x60 [drm_kms_helper] intel_fbdev_set_par+0x18/0x70 [i915] fb_set_var+0x236/0x460 fbcon_blank+0x30f/0x350 do_unblank_screen+0xd2/0x1a0 vt_ioctl+0x507/0x12a0 tty_ioctl+0x355/0xc30 do_vfs_ioctl+0xa3/0x5e0 SyS_ioctl+0x79/0x90 entry_SYSCALL_64_fastpath+0x13/0x94 - i915 unpin_work workqueue: intel_unpin_work_fn+0x58/0x140 [i915] process_one_work+0x1f1/0x480 worker_thread+0x48/0x4d0 kthread+0x101/0x140 and this patch purely papers over the issue by adding a NULL pointer check and a WARN_ON_ONCE() to avoid the oops that would then generally make the machine unresponsive. Other callers of i915_gem_object_to_ggtt() seem to also check for the returned pointer being NULL and warn about it, so this clearly has happened before in other places. [ Reported it originally to the i915 developers on Jan 8, applying the ugly workaround on my own now after triggering the problem for the second time with no feedback. This is likely to be the same bug reported as https://bugs.freedesktop.org/show_bug.cgi?id=98829 https://bugs.freedesktop.org/show_bug.cgi?id=99134 which has a patch for the underlying problem, but it hasn't gotten to me, so I'm applying the workaround. ] Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Imre Deak <imre.deak@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'sound/soc/codecs/cx20442.h')