/* * wm8962.h -- WM8962 Soc Audio driver platform data * * 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 _WM8962_PDATA_H #define _WM8962_PDATA_H #define WM8962_MAX_GPIO 6 /* Use to set GPIO default values to zero */ #define WM8962_GPIO_SET 0x10000 #define WM8962_GPIO_FN_CLKOUT 0 #define WM8962_GPIO_FN_LOGIC 1 #define WM8962_GPIO_FN_SDOUT 2 #define WM8962_GPIO_FN_IRQ 3 #define WM8962_GPIO_FN_THERMAL 4 #define WM8962_GPIO_FN_PLL2_LOCK 6 #define WM8962_GPIO_FN_PLL3_LOCK 7 #define WM8962_GPIO_FN_FLL_LOCK 9 #define WM8962_GPIO_FN_DRC_ACT 10 #define WM8962_GPIO_FN_WSEQ_DONE 11 #define WM8962_GPIO_FN_ALC_NG_ACT 12 #define WM8962_GPIO_FN_ALC_PEAK_LIMIT 13 #define WM8962_GPIO_FN_ALC_SATURATION 14 #define WM8962_GPIO_FN_ALC_LEVEL_THR 15 #define WM8962_GPIO_FN_ALC_LEVEL_LOCK 16 #define WM8962_GPIO_FN_FIFO_ERR 17 #define WM8962_GPIO_FN_OPCLK 18 #define WM8962_GPIO_FN_DMICCLK 19 #define WM8962_GPIO_FN_DMICDAT 20 #define WM8962_GPIO_FN_MICD 21 #define WM8962_GPIO_FN_MICSCD 22 struct wm8962_pdata { struct clk *mclk; int gpio_base; u32 gpio_init[WM8962_MAX_GPIO]; /* Setup for microphone detection, raw value to be written to * R48(0x30) - only microphone related bits will be updated. * Detection may be enabled here for use with signals brought * out on the GPIOs. */ u32 mic_cfg; bool irq_active_low; bool spk_mono; /* Speaker outputs tied together as mono */ /** * This flag should be set if one or both IN4 inputs is wired * in a DC measurement configuration. */ bool in4_dc_measure; }; #endif ve'>logtreecommitdiff
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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 /include/net/nfc/nci.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 'include/net/nfc/nci.h')