mpc512x_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>

1 files changed, 1 insertions, 9 deletions

diff --git a/drivers/dma/mpc512x_dma.c b/drivers/dma/mpc512x_dma.c
index 2d956732aa3d..2fe435377333 100644
--- a/drivers/dma/mpc512x_dma.c
+++ b/drivers/dma/mpc512x_dma.c
@@ -556,15 +556,7 @@ static enum dma_status
 mpc_dma_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
                struct dma_tx_state *txstate)
 {
-        struct mpc_dma_chan *mchan = dma_chan_to_mpc_dma_chan(chan);
-        enum dma_status ret;
-        unsigned long flags;
-
-        spin_lock_irqsave(&mchan->lock, flags);
-        ret = dma_cookie_status(chan, cookie, txstate);
-        spin_unlock_irqrestore(&mchan->lock, flags);
-
-        return ret;
+        return dma_cookie_status(chan, cookie, txstate);
 }
 
 /* Prepare descriptor for memory to memory copy */