drm/i915: Always clear semaphore mboxes on seqno wrap (ba1a7067) · Commits · e / devices / android_kernel_fairphone_FP5

In preparation for setting the seqno to arbitrary value on init or through debugfs. We need to always clear the semaphores and set the hws page seqno index by calling intel_ring_init_seqno(). v2: rewrote the commit message as suggested by Chris Wilson. Signed-off-by:

Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by:

Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:

Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_gem.c

+0 −12

Original line number	Diff line number	Diff line
		@@ -1932,18 +1932,6 @@ i915_gem_handle_seqno_wrap(struct drm_device *dev)
		struct intel_ring_buffer *ring;
		int ret, i, j;

		/* The hardware uses various monotonic 32-bit counters, if we
		* detect that they will wraparound we need to idle the GPU
		* and reset those counters.
		*/
		ret = 0;
		for_each_ring(ring, dev_priv, i) {
		for (j = 0; j < ARRAY_SIZE(ring->sync_seqno); j++)
		ret \|= ring->sync_seqno[j] != 0;
		}
		if (ret == 0)
		return ret;

		/* Carefully retire all requests without writing to the rings */
		for_each_ring(ring, dev_priv, i) {
		ret = intel_ring_idle(ring);