drm/i915: Split I915_RESET_IN_PROGRESS into two flags
I915_RESET_IN_PROGRESS is being used for both signaling the requirement
to i915_mutex_lock_interruptible() to avoid taking the struct_mutex and
to instruct a waiter (already holding the struct_mutex) to perform the
reset. To allow for a little more coordination, split these two meaning
into a couple of distinct flags. I915_RESET_BACKOFF tells
i915_mutex_lock_interruptible() not to acquire the mutex and
I915_RESET_HANDOFF tells the waiter to call i915_reset().
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170316171305.12972-1-chris@chris-wilson.co.uk
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 4b73513..5959c9b 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3639,7 +3639,7 @@ static bool abort_flip_on_reset(struct intel_crtc *crtc)
{
struct i915_gpu_error *error = &to_i915(crtc->base.dev)->gpu_error;
- if (i915_reset_in_progress(error))
+ if (i915_reset_backoff(error))
return true;
if (crtc->reset_count != i915_reset_count(error))
@@ -10595,7 +10595,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
goto cleanup;
intel_crtc->reset_count = i915_reset_count(&dev_priv->gpu_error);
- if (i915_reset_in_progress_or_wedged(&dev_priv->gpu_error)) {
+ if (i915_reset_backoff_or_wedged(&dev_priv->gpu_error)) {
ret = -EIO;
goto unlock;
}