[PATCH] drm/radeon/kms/r7xx: add workaround for hw issue with HDP flush

Use of HDP_*_COHERENCY_FLUSH_CNTL can cause a hang in certain situations. Add workaround. Signed-off-by: Alex Deucher Cc: stable at kernel.org --- drivers/gpu/drm/radeon/r600.c | 24 ++-- drivers/gpu/drm/radeon/r600d.h |1 + drivers/gpu/drm/radeon/rv770.c |5 ++

[PATCH] drm/radeon/kms/r7xx: add workaround for hw issue with HDP flush

Use of HDP_*_COHERENCY_FLUSH_CNTL can cause a hang in certain situations. Add workaround. Signed-off-by: Alex Deucher Cc: sta...@kernel.org --- drivers/gpu/drm/radeon/r600.c | 24 ++-- drivers/gpu/drm/radeon/r600d.h |1 + drivers/gpu/drm/radeon/rv770.c |5 -