OMAP: DSS2: DSI: fix IRQ debug prints

print_irq_status functions can be called with empty irq status when full
irq debugging is enabled. This patch makes print_irq_status functions
return immediately when given an empty irq status to lessen the debug
spam slightly.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index 37226628bc0f..0a7f1a47f8e3 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -409,6 +409,9 @@ static void dsi_perf_show(const char *name)
 
 static void print_irq_status(u32 status)
 {
+        if (status == 0)
+                return;
+
 #ifndef VERBOSE_IRQ
         if ((status & ~DSI_IRQ_CHANNEL_MASK) == 0)
                 return;
@@ -444,6 +447,9 @@ static void print_irq_status(u32 status)
 
 static void print_irq_status_vc(int channel, u32 status)
 {
+        if (status == 0)
+                return;
+
 #ifndef VERBOSE_IRQ
         if ((status & ~DSI_VC_IRQ_PACKET_SENT) == 0)
                 return;
@@ -470,6 +476,9 @@ static void print_irq_status_vc(int channel, u32 status)
 
 static void print_irq_status_cio(u32 status)
 {
+        if (status == 0)
+                return;
+
         printk(KERN_DEBUG "DSI CIO IRQ 0x%x: ", status);
 
 #define PIS(x) \