pch_dma: 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/pch_dma.c b/drivers/dma/pch_dma.c
index ce3dc3e9688c86ea30e3be7757094b78749a6ec9..237f1d575873d64dbe0c472c57853c811c206afb 100644 (file)
--- a/drivers/dma/pch_dma.c
+++ b/drivers/dma/pch_dma.c
@@ -564,14 +564,7 @@ static void pd_free_chan_resources(struct dma_chan *chan)
 static enum dma_status pd_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
                                    struct dma_tx_state *txstate)
 {
-       struct pch_dma_chan *pd_chan = to_pd_chan(chan);
-       enum dma_status ret;
-
-       spin_lock_irq(&pd_chan->lock);
-       ret = dma_cookie_status(chan, cookie, txstate);
-       spin_unlock_irq(&pd_chan->lock);
-
-       return ret;
+       return dma_cookie_status(chan, cookie, txstate);
 }
 
 static void pd_issue_pending(struct dma_chan *chan)