drm/i915: Stop automatically retiring requests after a GPU hang
Following a GPU hang, we break out of the request loop in order to unlock the struct_mutex for use by the GPU reset. However, if we retire all the requests at that moment, we cannot identify the guilty request after performing the reset. v2: Not automatically retiring requests forces us to recheck for available ringspace. Fixes: f4457ae7 ("drm/i915: Prevent leaking of -EIO from i915_wait_request()") Testcase: igt/gem_reset_stats/ban-* Signed-off-by:Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Tested-by:
Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by:
Mika Kuoppala <mika.kuoppala@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1463137042-9669-4-git-send-email-chris@chris-wilson.co.uk
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