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Commit 54e03986 authored by Grigori Goronzy's avatar Grigori Goronzy Committed by Alex Deucher
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drm/radeon: fix HDP flushing 



This was regressed by commit 39e7f6f8, although I don't know of any
actual issues caused by it.

The storage domain is read without TTM locking now, but the lock
never helped to prevent any races.

Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarGrigori Goronzy <greg@chown.ath.cx>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 828202a3

drivers/gpu/drm/radeon/radeon_gem.c

+1 −0
Original line number Diff line number Diff line
@@ -476,6 +476,7 @@ int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data, 
		r = ret;



	/* Flush HDP cache via MMIO if necessary */

	cur_placement = ACCESS_ONCE(robj->tbo.mem.mem_type);

	if (rdev->asic->mmio_hdp_flush &&

	    radeon_mem_type_to_domain(cur_placement) == RADEON_GEM_DOMAIN_VRAM)

		robj->rdev->asic->mmio_hdp_flush(rdev);