[PATCH 6/6] OMAP: DSS2: DSI: fix IRQ debug prints

[Tomi Valkeinen <tomi.valkeinen@ti.com>]

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>
---
 drivers/video/omap2/dss/dsi.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index ec5b879..f6733b5 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -412,6 +412,9 @@ 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;
@@ -447,6 +450,9 @@ 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;
@@ -473,6 +479,9 @@ 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) \
-- 
1.7.1