drm/i915: non-interruptible sleeps can't handle -EGAINreset-fail

So don't return -EAGAIN, even in the case of a gpu hang. Remap it to -EIO
instead.

This is a bit ugly because intel_ring_begin is all non-interruptible
and hence only returns -EIO. But as the comment in there says,
auditing all the callsites would be a pain.

To avoid duplicating code, reuse i915_gem_check_wedge in __wait_seqno.
Use the opportunity to clarify the different cases a bit with
comments.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

0 files changed, 0 insertions, 0 deletions