/* * sound/oss/sb_mixer.h * * Definitions for the SB Pro and SB16 mixers */ /* * Copyright (C) by Hannu Savolainen 1993-1997 * * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL) * Version 2 (June 1991). See the "COPYING" file distributed with this software * for more info. */ /* * Modified: * Hunyue Yau Jan 6 1994 * Added defines for the Sound Galaxy NX Pro mixer. * * Rolf Fokkens Dec 20 1998 * Added defines for some ES188x chips. * * Rolf Fokkens Dec 27 1998 * Moved static stuff to sb_mixer.c * */ /* * Mixer registers * * NOTE! RECORD_SRC == IN_FILTER */ /* * Mixer registers of SB Pro */ #define VOC_VOL 0x04 #define MIC_VOL 0x0A #define MIC_MIX 0x0A #define RECORD_SRC 0x0C #define IN_FILTER 0x0C #define OUT_FILTER 0x0E #define MASTER_VOL 0x22 #define FM_VOL 0x26 #define CD_VOL 0x28 #define LINE_VOL 0x2E #define IRQ_NR 0x80 #define DMA_NR 0x81 #define IRQ_STAT 0x82 #define OPSW 0x3c /* * Additional registers on the SG NX Pro */ #define COVOX_VOL 0x42 #define TREBLE_LVL 0x44 #define BASS_LVL 0x46 #define FREQ_HI (1 << 3)/* Use High-frequency ANFI filters */ #define FREQ_LOW 0 /* Use Low-frequency ANFI filters */ #define FILT_ON 0 /* Yes, 0 to turn it on, 1 for off */ #define FILT_OFF (1 << 5) #define MONO_DAC 0x00 #define STEREO_DAC 0x02 /* * Mixer registers of SB16 */ #define SB16_OMASK 0x3c #define SB16_IMASK_L 0x3d #define SB16_IMASK_R 0x3e #define LEFT_CHN 0 #define RIGHT_CHN 1 /* * 3DSE register of AWE32/64 */ #define AWE_3DSE 0x90 /* * Mixer registers of ALS007 */ #define ALS007_RECORD_SRC 0x6c #define ALS007_OUTPUT_CTRL1 0x3c #define ALS007_OUTPUT_CTRL2 0x4c #define MIX_ENT(name, reg_l, bit_l, len_l, reg_r, bit_r, len_r) \ {{reg_l, bit_l, len_l}, {reg_r, bit_r, len_r}} /* * Recording sources (SB Pro) */ #define SRC__MIC 1 /* Select Microphone recording source */ #define SRC__CD 3 /* Select CD recording source */ #define SRC__LINE 7 /* Use Line-in for recording source */ /* * Recording sources for ALS-007 */ #define ALS007_MIC 4 #define ALS007_LINE 6 #define ALS007_CD 2 #define ALS007_SYNTH 7 diff
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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/bcd2000/Makefile
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/bcd2000/Makefile')