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path: root/drivers/char/drm/via_dmablit.c
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Diffstat (limited to 'drivers/char/drm/via_dmablit.c')
-rw-r--r--drivers/char/drm/via_dmablit.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/char/drm/via_dmablit.c b/drivers/char/drm/via_dmablit.c
index 806f9ce..2054d57 100644
--- a/drivers/char/drm/via_dmablit.c
+++ b/drivers/char/drm/via_dmablit.c
@@ -218,7 +218,9 @@ via_fire_dmablit(drm_device_t *dev, drm_via_sg_info_t *vsg, int engine)
VIA_WRITE(VIA_PCI_DMA_MR0 + engine*0x04, VIA_DMA_MR_CM | VIA_DMA_MR_TDIE);
VIA_WRITE(VIA_PCI_DMA_BCR0 + engine*0x10, 0);
VIA_WRITE(VIA_PCI_DMA_DPR0 + engine*0x10, vsg->chain_start);
+ DRM_WRITEMEMORYBARRIER();
VIA_WRITE(VIA_PCI_DMA_CSR0 + engine*0x04, VIA_DMA_CSR_DE | VIA_DMA_CSR_TS);
+ VIA_READ(VIA_PCI_DMA_CSR0 + engine*0x04);
}
/*
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