diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2013-05-27 14:14:42 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-08-05 06:02:25 +0200 |
| commit | 985a0cb970c9338ac55a1c31b3b8d730eabcfe57 (patch) | |
| tree | 896b3015abe486f691325c1affa7ca4768ce663e /drivers/dma/txx9dmac.c | |
| parent | mmp_tdma: set cookies as well when asked for tx status (diff) | |
| download | linux-985a0cb970c9338ac55a1c31b3b8d730eabcfe57.tar.xz linux-985a0cb970c9338ac55a1c31b3b8d730eabcfe57.zip | |
txx9dmac: return DMA_SUCCESS immediately from device_tx_status()
There is no point to go throught the rest of the function if first call to
dma_cookie_status() returned DMA_SUCCESS.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/txx9dmac.c')
| -rw-r--r-- | drivers/dma/txx9dmac.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c index a59fb4841d4c..59357db62359 100644 --- a/drivers/dma/txx9dmac.c +++ b/drivers/dma/txx9dmac.c @@ -962,15 +962,14 @@ txx9dmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie, enum dma_status ret; ret = dma_cookie_status(chan, cookie, txstate); - if (ret != DMA_SUCCESS) { - spin_lock_bh(&dc->lock); - txx9dmac_scan_descriptors(dc); - spin_unlock_bh(&dc->lock); + if (ret == DMA_SUCCESS) + return DMA_SUCCESS; - ret = dma_cookie_status(chan, cookie, txstate); - } + spin_lock_bh(&dc->lock); + txx9dmac_scan_descriptors(dc); + spin_unlock_bh(&dc->lock); - return ret; + return dma_cookie_status(chan, cookie, txstate); } static void txx9dmac_chain_dynamic(struct txx9dmac_chan *dc, |