mmp_pdma: remove useless use of lock

Accordingly to dma_cookie_status() description locking is not required.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c
index c26699f..ad4b0a7 100644 (file)
--- a/drivers/dma/mmp_pdma.c
+++ b/drivers/dma/mmp_pdma.c
@@ -632,15 +632,7 @@ static int mmp_pdma_control(struct dma_chan *dchan, enum dma_ctrl_cmd cmd,
 static enum dma_status mmp_pdma_tx_status(struct dma_chan *dchan,
                        dma_cookie_t cookie, struct dma_tx_state *txstate)
 {
-       struct mmp_pdma_chan *chan = to_mmp_pdma_chan(dchan);
-       enum dma_status ret;
-       unsigned long flags;
-
-       spin_lock_irqsave(&chan->desc_lock, flags);
-       ret = dma_cookie_status(dchan, cookie, txstate);
-       spin_unlock_irqrestore(&chan->desc_lock, flags);
-
-       return ret;
+       return dma_cookie_status(dchan, cookie, txstate);
 }
 
 /**