diff options
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/omap-dma.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c index 6cf66e608338..324f4c7c5dd0 100644 --- a/drivers/dma/omap-dma.c +++ b/drivers/dma/omap-dma.c @@ -201,8 +201,6 @@ static void omap_dma_start(struct omap_chan *c, struct omap_desc *d) c->plat->dma_write(d->cicr, CICR, c->dma_ch); val = c->plat->dma_read(CCR, c->dma_ch); - if (od->plat->errata & DMA_ERRATA_IFRAME_BUFFERING) - val |= CCR_BUFFERING_DISABLE; val |= CCR_ENABLE; mb(); c->plat->dma_write(val, CCR, c->dma_ch); @@ -558,6 +556,7 @@ static struct dma_async_tx_descriptor *omap_dma_prep_slave_sg( struct dma_chan *chan, struct scatterlist *sgl, unsigned sglen, enum dma_transfer_direction dir, unsigned long tx_flags, void *context) { + struct omap_dmadev *od = to_omap_dma_dev(chan->device); struct omap_chan *c = to_omap_dma_chan(chan); enum dma_slave_buswidth dev_width; struct scatterlist *sgent; @@ -636,6 +635,8 @@ static struct dma_async_tx_descriptor *omap_dma_prep_slave_sg( d->cicr |= CICR_MISALIGNED_ERR_IE | CICR_TRANS_ERR_IE; } + if (od->plat->errata & DMA_ERRATA_IFRAME_BUFFERING) + d->ccr |= CCR_BUFFERING_DISABLE; /* * Build our scatterlist entries: each contains the address, @@ -760,6 +761,8 @@ static struct dma_async_tx_descriptor *omap_dma_prep_dma_cyclic( d->csdp |= CSDP_DST_BURST_64 | CSDP_SRC_BURST_64; } + if (od->plat->errata & DMA_ERRATA_IFRAME_BUFFERING) + d->ccr |= CCR_BUFFERING_DISABLE; c->cyclic = true; |