/* * This header provides constants for DRA pinctrl bindings. * * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ * Author: Rajendra Nayak * * 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 _DT_BINDINGS_PINCTRL_DRA_H #define _DT_BINDINGS_PINCTRL_DRA_H /* DRA7 mux mode options for each pin. See TRM for options */ #define MUX_MODE0 0x0 #define MUX_MODE1 0x1 #define MUX_MODE2 0x2 #define MUX_MODE3 0x3 #define MUX_MODE4 0x4 #define MUX_MODE5 0x5 #define MUX_MODE6 0x6 #define MUX_MODE7 0x7 #define MUX_MODE8 0x8 #define MUX_MODE9 0x9 #define MUX_MODE10 0xa #define MUX_MODE11 0xb #define MUX_MODE12 0xc #define MUX_MODE13 0xd #define MUX_MODE14 0xe #define MUX_MODE15 0xf /* Certain pins need virtual mode, but note: they may glitch */ #define MUX_VIRTUAL_MODE0 (MODE_SELECT | (0x0 << 4)) #define MUX_VIRTUAL_MODE1 (MODE_SELECT | (0x1 << 4)) #define MUX_VIRTUAL_MODE2 (MODE_SELECT | (0x2 << 4)) #define MUX_VIRTUAL_MODE3 (MODE_SELECT | (0x3 << 4)) #define MUX_VIRTUAL_MODE4 (MODE_SELECT | (0x4 << 4)) #define MUX_VIRTUAL_MODE5 (MODE_SELECT | (0x5 << 4)) #define MUX_VIRTUAL_MODE6 (MODE_SELECT | (0x6 << 4)) #define MUX_VIRTUAL_MODE7 (MODE_SELECT | (0x7 << 4)) #define MUX_VIRTUAL_MODE8 (MODE_SELECT | (0x8 << 4)) #define MUX_VIRTUAL_MODE9 (MODE_SELECT | (0x9 << 4)) #define MUX_VIRTUAL_MODE10 (MODE_SELECT | (0xa << 4)) #define MUX_VIRTUAL_MODE11 (MODE_SELECT | (0xb << 4)) #define MUX_VIRTUAL_MODE12 (MODE_SELECT | (0xc << 4)) #define MUX_VIRTUAL_MODE13 (MODE_SELECT | (0xd << 4)) #define MUX_VIRTUAL_MODE14 (MODE_SELECT | (0xe << 4)) #define MUX_VIRTUAL_MODE15 (MODE_SELECT | (0xf << 4)) #define MODE_SELECT (1 << 8) #define PULL_ENA (0 << 16) #define PULL_DIS (1 << 16) #define PULL_UP (1 << 17) #define INPUT_EN (1 << 18) #define SLEWCONTROL (1 << 19) #define WAKEUP_EN (1 << 24) #define WAKEUP_EVENT (1 << 25) /* Active pin states */ #define PIN_OUTPUT (0 | PULL_DIS) #define PIN_OUTPUT_PULLUP (PULL_UP) #define PIN_OUTPUT_PULLDOWN (0) #define PIN_INPUT (INPUT_EN | PULL_DIS) #define PIN_INPUT_SLEW (INPUT_EN | SLEWCONTROL) #define PIN_INPUT_PULLUP (PULL_ENA | INPUT_EN | PULL_UP) #define PIN_INPUT_PULLDOWN (PULL_ENA | INPUT_EN) /* * Macro to allow using the absolute physical address instead of the * padconf registers instead of the offset from padconf base. */ #define DRA7XX_CORE_IOPAD(pa, val) (((pa) & 0xffff) - 0x3400) (val) #endif ='10' name='q' value=''/>
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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 /net/wireless/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 'net/wireless/Makefile')