drm/i915: add error_state sysfs entry

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As getting error state doesn't anymore require big kmallocs,
make error state accessible also from sysfs.

v2: - error state clearing (Chris Wilson)
    - user hint, proper access mode bits and name (Daniel Vetter)

v3: release resources in proper order (Chris Wilson)

Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Apply Chris' s/error_state/error/ bikeshed on the sysfs
name. Also update the dmesg message, spotted by Chris.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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This commit is contained in:

Mika Kuoppala 2013-06-06 17:38:54 +03:00 • committed by Daniel Vetter

parent 4dc955f7f5

commit ef86ddced7

2 changed files with 72 additions and 2 deletions

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3

drivers/gpu/drm/i915/i915_irq.c

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71

drivers/gpu/drm/i915/i915_sysfs.c

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