diff options
| author | Shawn Guo <shawn.guo@linaro.org> | 2012-04-11 07:29:31 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@linux.intel.com> | 2012-04-20 12:05:58 +0200 |
| commit | d04525ed0323709711277563a2c76e446a017423 (patch) | |
| tree | 76766ed95d698f3ec98762301e42f703e774381c /drivers/dma | |
| parent | dmaengine: imx-dma: dont complete descriptor for cyclic dma (diff) | |
| download | linux-d04525ed0323709711277563a2c76e446a017423.tar.xz linux-d04525ed0323709711277563a2c76e446a017423.zip | |
dma: mxs-dma: enable channel in device_issue_pending call
Enable channel in device_issue_pending call, so that the order between
cookie assignment and channel enabling can be ensured naturally.
It fixes the mxs gpmi-nand breakage which is caused by the incorrect
order of cookie assigning and channel enabling.
Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Huang Shijie <b32955@freescale.com>
Tested-by <samgandhi9@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/mxs-dma.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c index c81ef7e10e08..655d4ce6ed0d 100644 --- a/drivers/dma/mxs-dma.c +++ b/drivers/dma/mxs-dma.c @@ -201,10 +201,6 @@ static struct mxs_dma_chan *to_mxs_dma_chan(struct dma_chan *chan) static dma_cookie_t mxs_dma_tx_submit(struct dma_async_tx_descriptor *tx) { - struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(tx->chan); - - mxs_dma_enable_chan(mxs_chan); - return dma_cookie_assign(tx); } @@ -558,9 +554,9 @@ static enum dma_status mxs_dma_tx_status(struct dma_chan *chan, static void mxs_dma_issue_pending(struct dma_chan *chan) { - /* - * Nothing to do. We only have a single descriptor. - */ + struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan); + + mxs_dma_enable_chan(mxs_chan); } static int __init mxs_dma_init(struct mxs_dma_engine *mxs_dma) |