diff options
| author | Vinod Koul <vinod.koul@linux.intel.com> | 2012-05-11 10:18:21 +0400 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@linux.intel.com> | 2012-05-15 07:13:40 +0400 |
| commit | d41160524d8d8ee721296e5c7e15f1ed727df7eb (patch) | |
| tree | 49328b29bbcd95acbfd94556ea748315c2851053 /drivers/dma | |
| parent | eab21585580344c8533d5e7bc4edea27ad1e268f (diff) | |
| download | linux-d41160524d8d8ee721296e5c7e15f1ed727df7eb.tar.xz | |
dmaengine: fix cyclic dma usage
for cyclic dma, dont makr the descriptor as complte. Fix the remaining users of
cyclic dma which do so
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Tested-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Mika Westerberg <mika.westerberg@iki.fi>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/at_hdmac.c | 4 | ||||
| -rw-r--r-- | drivers/dma/ep93xx_dma.c | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index 445fdf811695..bf0d7e4e345b 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c @@ -245,7 +245,9 @@ atc_chain_complete(struct at_dma_chan *atchan, struct at_desc *desc) dev_vdbg(chan2dev(&atchan->chan_common), "descriptor %u complete\n", txd->cookie); - dma_cookie_complete(txd); + /* mark the descriptor as complete for non cyclic cases only */ + if (!atc_chan_is_cyclic(atchan)) + dma_cookie_complete(txd); /* move children to free_list */ list_splice_init(&desc->tx_list, &atchan->free_list); diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c index e6f133b78dc2..f6e9b572b998 100644 --- a/drivers/dma/ep93xx_dma.c +++ b/drivers/dma/ep93xx_dma.c @@ -703,7 +703,9 @@ static void ep93xx_dma_tasklet(unsigned long data) desc = ep93xx_dma_get_active(edmac); if (desc) { if (desc->complete) { - dma_cookie_complete(&desc->txd); + /* mark descriptor complete for non cyclic case only */ + if (!test_bit(EP93XX_DMA_IS_CYCLIC, &edmac->flags)) + dma_cookie_complete(&desc->txd); list_splice_init(&edmac->active, &list); } callback = desc->txd.callback; |