fsldma: remove useless use of lock
authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Mon, 27 May 2013 12:14:35 +0000 (15:14 +0300)
committerVinod Koul <vinod.koul@intel.com>
Mon, 5 Aug 2013 04:02:24 +0000 (09:32 +0530)
Accordingly to dma_cookie_status() description locking is not required.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Li Yang <leoli@freescale.com>
Cc: Zhang Wei <zw@zh-kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
drivers/dma/fsldma.c

index 49e8fbdb898388703ac5db7e306e4c5f39d88a19..b3f3e90054f2ab956e8019dd8abe539b85fa0301 100644 (file)
@@ -979,15 +979,7 @@ static enum dma_status fsl_tx_status(struct dma_chan *dchan,
                                        dma_cookie_t cookie,
                                        struct dma_tx_state *txstate)
 {
-       struct fsldma_chan *chan = to_fsl_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);
 }
 
 /*----------------------------------------------------------------------------*/