The throttle-ioctl never touches the struct_mutex. It does, however, as
part of its ABI report whether the hardware is terminally wedged. For
that purposes, it only has to report the current state and not incur the
cost of checking/waiting every invocation, as we do not have to wait for
a reset before waiting on a request to ensure completion (that is baked
into the wait request implementation).
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161028125858.23563-3-chris@chris-wilson.co.uk
struct drm_i915_gem_request *request, *target = NULL;
int ret;
- ret = i915_gem_wait_for_error(&dev_priv->gpu_error);
- if (ret)
- return ret;
-
/* ABI: return -EIO if already wedged */
if (i915_terminally_wedged(&dev_priv->gpu_error))
return -EIO;