Tested-by: Ameya Palande <2ameya@xxxxxxxxx>
On Sun, Dec 18, 2011 at 12:02 PM, Ilya Yanok <yanok@xxxxxxxxxxx> wrote:
> Free the channel lock before calling __cpdma_chan_process to prevent
> dead lock.
>
> Signed-off-by: Ilya Yanok <yanok@xxxxxxxxxxx>
> ---
> drivers/net/ethernet/ti/davinci_cpdma.c | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/net/ethernet/ti/davinci_cpdma.c b/drivers/net/ethernet/ti/davinci_cpdma.c
> index dca9d33..c97d2f5 100644
> --- a/drivers/net/ethernet/ti/davinci_cpdma.c
> +++ b/drivers/net/ethernet/ti/davinci_cpdma.c
> @@ -836,11 +836,13 @@ int cpdma_chan_stop(struct cpdma_chan *chan)
> chan_write(chan, cp, CPDMA_TEARDOWN_VALUE);
>
> /* handle completed packets */
> + spin_unlock_irqrestore(&chan->lock, flags);
> do {
> ret = __cpdma_chan_process(chan);
> if (ret < 0)
> break;
> } while ((ret & CPDMA_DESC_TD_COMPLETE) == 0);
> + spin_lock_irqsave(&chan->lock, flags);
>
> /* remaining packets haven't been tx/rx'ed, clean them up */
> while (chan->head) {
> --
> 1.7.6.4
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