[03/20] video: msm: add locked_enable_mdp_irq function

Commit Message

Carl Vanderlip March 18, 2011, 9:53 p.m. UTC

None

Patch

diff --git a/drivers/video/msm/mdp.c b/drivers/video/msm/mdp.c
index a078028..9fb9f1a 100644
--- a/drivers/video/msm/mdp.c
+++ b/drivers/video/msm/mdp.c
@@ -47,14 +47,12 @@  static struct clk *clk;
 static unsigned int mdp_irq_mask;
 DEFINE_MUTEX(mdp_mutex);
 
-static int enable_mdp_irq(struct mdp_info *mdp, uint32_t mask)
+static int locked_enable_mdp_irq(struct mdp_info *mdp, uint32_t mask)
 {
-	unsigned long irq_flags;
 	int ret = 0;
 
 	BUG_ON(!mask);
 
-	spin_lock_irqsave(&mdp->lock, irq_flags);
 	/* if the mask bits are already set return an error, this interrupt
 	 * is already enabled */
 	if (mdp_irq_mask & mask) {
@@ -72,7 +70,17 @@  static int enable_mdp_irq(struct mdp_info *mdp, uint32_t mask)
 	/* update the irq mask to reflect the fact that the interrupt is
 	 * enabled */
 	mdp_irq_mask |= mask;
-	spin_unlock_irqrestore(&mdp->lock, irq_flags);
+	return 0;
+}
+
+static int enable_mdp_irq(struct mdp_info *mdp, uint32_t mask)
+{
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&mdp->lock, flags);
+	ret = locked_enable_mdp_irq(mdp, mask);
+	spin_unlock_irqrestore(&mdp->lock, flags);
 	return ret;
 }