drm/i915/ttm: Return some errors instead of trying memcpy move
The i915_ttm_accel_move() function may return error codes that should be propagated further up the stack rather than consumed assuming that the accel move failed and could be replaced with a memcpy move. For -EINTR, -ERESTARTSYS and -EAGAIN, just propagate those codes, rather than retrying with a memcpy move. Fixes: 2b0a750c ("drm/i915/ttm: Failsafe migration blits") Cc: Matthew Auld <matthew.auld@intel.com> Signed-off-by:Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by:
Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220201070340.16457-1-thomas.hellstrom@linux.intel.com
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