Using GPMI-NAND driver on iMX28 using 3.4-rc1?

Russell King - ARM Linux linux at arm.linux.org.uk
Tue Apr 10 05:42:23 EDT 2012


On Fri, Apr 06, 2012 at 06:34:23PM +0800, Huang Shijie wrote:
> diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
> index 5978113..0f5b09a 100644
> --- a/drivers/dma/mxs-dma.c
> +++ b/drivers/dma/mxs-dma.c
> @@ -202,10 +202,12 @@ static struct mxs_dma_chan *to_mxs_dma_chan(struct  
> dma_cha
> 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);
> + dma_cookie_t c;
>
> + c = dma_cookie_assign(tx);
> mxs_dma_enable_chan(mxs_chan);
>
> - return dma_cookie_assign(tx);
> + return c;

Hang on, why are you enabling a channel (and presumably allowing this
transaction to be issued) before dma_async_issue_pending() has been
called for the channel?



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