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Commit 95c4b23e authored by Jerome Glisse's avatar Jerome Glisse Committed by Dave Airlie
Browse files

drm/radeon: fix HD6790, HD6570 backend programming 

Without this bit sets we get broken rendering and
lockups.

fglrx sets this bit.

Bugs that should be fixed by this patch :
https://bugs.freedesktop.org/show_bug.cgi?id=49792
https://bugzilla.kernel.org/show_bug.cgi?id=43207
https://bugs.freedesktop.org/show_bug.cgi?id=39282



Signed-off-by: default avatarJerome Glisse <jglisse@redhat.com>
Cc: stable@vger.kernel.org
Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 0b8c30bc

drivers/gpu/drm/radeon/evergreen.c

+2 −2
Original line number Diff line number Diff line
@@ -2180,7 +2180,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev) 
		WREG32(CC_GC_SHADER_PIPE_CONFIG, sp);

	}



	grbm_gfx_index |= SE_BROADCAST_WRITES;

	grbm_gfx_index = INSTANCE_BROADCAST_WRITES | SE_BROADCAST_WRITES;

	WREG32(GRBM_GFX_INDEX, grbm_gfx_index);

	WREG32(RLC_GFX_INDEX, grbm_gfx_index);