ENGR00136101-2 MX50: Only kick the clock off timer in irq handler.

Here 'kick' means start the timer or postpone the timer.
By only kicking the timer in irq handler only when no task pending
in the queue, rather than each time we submit a new task, it should
perform better.

Signed-off-by: Robby Cai <R63905@freescale.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/dma/pxp/pxp_dma.c b/drivers/dma/pxp/pxp_dma.c
index d87b1d278d24..1545682f7c13 100644
--- a/drivers/dma/pxp/pxp_dma.c
+++ b/drivers/dma/pxp/pxp_dma.c
@@ -767,8 +767,6 @@ static void pxpdma_dostart_work(struct pxps *pxp)
 
 	pxp_start(pxp);
 
-	mod_timer(&pxp->clk_timer, jiffies + msecs_to_jiffies(timeout_in_ms));
-
 	spin_unlock_irqrestore(&pxp->lock, flags);
 }
 
@@ -956,6 +954,7 @@ static irqreturn_t pxp_irq(int irq, void *dev_id)
 
 	wake_up(&pxp->done);
 	pxp->pxp_ongoing = 0;
+	mod_timer(&pxp->clk_timer, jiffies + msecs_to_jiffies(timeout_in_ms));
 
 	spin_unlock_irqrestore(&pxp->lock, flags);