diff options
| author | George Cherian <george.cherian@ti.com> | 2014-02-27 10:44:41 +0530 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-03-05 14:40:05 -0600 |
| commit | aecbc31d767cb549e93a44e50218e20d1bc66b59 (patch) | |
| tree | 954647ee5fadda82e2d726a243065a3c9db3b050 /drivers/usb | |
| parent | 57303488cd37da58263e842de134dc65f7c626d5 (diff) | |
usb: musb: musb_cppi41: Dont reprogram DMA if tear down is initiated
Reprogramming the DMA after tear down is initiated leads to warning.
This is mainly seen with ISOCH since we do a delayed completion for
ISOCH transfers. In ISOCH transfers dma_completion should not reprogram
if the channel tear down is initiated.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/musb/musb_cppi41.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/musb/musb_cppi41.c b/drivers/usb/musb/musb_cppi41.c index 5b0f2a58f8ce..7b8bbf53127e 100644 --- a/drivers/usb/musb/musb_cppi41.c +++ b/drivers/usb/musb/musb_cppi41.c @@ -132,7 +132,8 @@ static void cppi41_trans_done(struct cppi41_dma_channel *cppi41_channel) struct musb_hw_ep *hw_ep = cppi41_channel->hw_ep; struct musb *musb = hw_ep->musb; - if (!cppi41_channel->prog_len) { + if (!cppi41_channel->prog_len || + (cppi41_channel->channel.status == MUSB_DMA_STATUS_FREE)) { /* done, complete */ cppi41_channel->channel.actual_len = |