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drm/radeon: fix ring commit padding 

We don't need to pad anything if the number of dwords
written to the ring already matches the requirements.

Fixes some "writting more dword to ring than expected"
warnings.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2012-07-07 12:11:32 +02:00
parent dee53e7fb3
commit 07a713305a
1 changed files with 1 additions and 6 deletions
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7
drivers/gpu/drm/radeon/radeon_ring.c
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@ -272,13 +272,8 @@ int radeon_ring_lock(struct radeon_device *rdev, struct radeon_ring *ring, unsig
void radeon_ring_commit(struct radeon_device *rdev, struct radeon_ring *ring)
{
unsigned count_dw_pad;
unsigned i;
/* We pad to match fetch size */
count_dw_pad = (ring->align_mask + 1) -
(ring->wptr & ring->align_mask);
for (i = 0; i < count_dw_pad; i++) {
while (ring->wptr & ring->align_mask) {
radeon_ring_write(ring, ring->nop);
}
DRM_MEMORYBARRIER();