drm/i915: Defer reporting EIO until we try to use the GPU

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Instead of reporting EIO upfront in the entrance of an ioctl that may or
may not attempt to use the GPU, defer the actual detection of an invalid
ioctl to when we issue a GPU instruction. This allows us to continue to
use bo in video memory (via pread/pwrite and mmap) after the GPU has hung.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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This commit is contained in:

Chris Wilson 2011-01-26 15:55:56 +00:00

parent e110e8d672

commit 21dd373486

4 changed files with 18 additions and 28 deletions

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1

drivers/gpu/drm/i915/i915_drv.h

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36

drivers/gpu/drm/i915/i915_gem.c

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5

drivers/gpu/drm/i915/i915_gem_tiling.c

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4

drivers/gpu/drm/i915/intel_ringbuffer.c

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