diff options
Diffstat (limited to 'drivers/char/drm/via_dma.c')
| -rw-r--r-- | drivers/char/drm/via_dma.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/char/drm/via_dma.c b/drivers/char/drm/via_dma.c index a691ae74129..2f72cbefc2f 100644 --- a/drivers/char/drm/via_dma.c +++ b/drivers/char/drm/via_dma.c @@ -480,6 +480,7 @@ static int via_hook_segment(drm_via_private_t * dev_priv, VIA_WRITE(VIA_REG_TRANSET, (HC_ParaType_PreCR << 16)); VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_hi); VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_lo); + VIA_READ(VIA_REG_TRANSPACE); } } return paused; @@ -557,8 +558,9 @@ static void via_cmdbuf_start(drm_via_private_t * dev_priv) VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_hi); VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_lo); - + DRM_WRITEMEMORYBARRIER(); VIA_WRITE(VIA_REG_TRANSPACE, command | HC_HAGPCMNT_MASK); + VIA_READ(VIA_REG_TRANSPACE); } static void via_pad_cache(drm_via_private_t * dev_priv, int qwords) |