Commit d04525ed authored by Shawn Guo's avatar Shawn Guo Committed by Vinod Koul

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: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
Tested-by: default avatarHuang Shijie <b32955@freescale.com>
Tested-by <samgandhi9@gmail.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@linux.intel.com>
parent 60f2951e
......@@ -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)
......
......@@ -363,6 +363,7 @@ static void mxs_mmc_bc(struct mxs_mmc_host *host)
goto out;
dmaengine_submit(desc);
dma_async_issue_pending(host->dmach);
return;
out:
......@@ -403,6 +404,7 @@ static void mxs_mmc_ac(struct mxs_mmc_host *host)
goto out;
dmaengine_submit(desc);
dma_async_issue_pending(host->dmach);
return;
out:
......@@ -531,6 +533,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
goto out;
dmaengine_submit(desc);
dma_async_issue_pending(host->dmach);
return;
out:
dev_warn(mmc_dev(host->mmc),
......
......@@ -266,6 +266,7 @@ int start_dma_without_bch_irq(struct gpmi_nand_data *this,
desc->callback = dma_irq_callback;
desc->callback_param = this;
dmaengine_submit(desc);
dma_async_issue_pending(get_dma_chan(this));
/* Wait for the interrupt from the DMA block. */
err = wait_for_completion_timeout(dma_c, msecs_to_jiffies(1000));
......
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