Patchwork [05/12] fsldma: remove useless use of lock

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Submitter Andy Shevchenko
Date May 27, 2013, 12:14 p.m.
Message ID <1369656882-25241-6-git-send-email-andriy.shevchenko@linux.intel.com>
Download mbox | patch
Permalink /patch/246589/
State Not Applicable
Headers show

Comments

Andy Shevchenko - May 27, 2013, 12:14 p.m.
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
---
 drivers/dma/fsldma.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

Patch

diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 49e8fbd..b3f3e90 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -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);
 }
 
 /*----------------------------------------------------------------------------*/