/* * wm9713.h -- WM9713 Soc Audio driver */ #ifndef _WM9713_H #define _WM9713_H /* clock inputs */ #define WM9713_CLKA_PIN 0 #define WM9713_CLKB_PIN 1 /* clock divider ID's */ #define WM9713_PCMCLK_DIV 0 #define WM9713_CLKA_MULT 1 #define WM9713_CLKB_MULT 2 #define WM9713_HIFI_DIV 3 #define WM9713_PCMBCLK_DIV 4 #define WM9713_PCMCLK_PLL_DIV 5 #define WM9713_HIFI_PLL_DIV 6 /* Calculate the appropriate bit mask for the external PCM clock divider */ #define WM9713_PCMDIV(x) ((x - 1) << 8) /* Calculate the appropriate bit mask for the external HiFi clock divider */ #define WM9713_HIFIDIV(x) ((x - 1) << 12) /* MCLK clock mulitipliers */ #define WM9713_CLKA_X1 (0 << 1) #define WM9713_CLKA_X2 (1 << 1) #define WM9713_CLKB_X1 (0 << 2) #define WM9713_CLKB_X2 (1 << 2) /* MCLK clock MUX */ #define WM9713_CLK_MUX_A (0 << 0) #define WM9713_CLK_MUX_B (1 << 0) /* Voice DAI BCLK divider */ #define WM9713_PCMBCLK_DIV_1 (0 << 9) #define WM9713_PCMBCLK_DIV_2 (1 << 9) #define WM9713_PCMBCLK_DIV_4 (2 << 9) #define WM9713_PCMBCLK_DIV_8 (3 << 9) #define WM9713_PCMBCLK_DIV_16 (4 << 9) #endif n value='master'>master net-next plumbingsTobias Klauser
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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/usb/quirks-table.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/usb/quirks-table.h')