ARM: S5PV210: Fix possible null pointer dereference

Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/arch/arm/mach-s5pv210/cpufreq.c b/arch/arm/mach-s5pv210/cpufreq.c
index 22046e2f53c2..153af8b359ec 100644
--- a/arch/arm/mach-s5pv210/cpufreq.c
+++ b/arch/arm/mach-s5pv210/cpufreq.c
@@ -101,12 +101,14 @@ static void s5pv210_set_refresh(enum s5pv210_dmc_port ch, unsigned long freq)
         unsigned long tmp, tmp1;
         void __iomem *reg = NULL;
 
-        if (ch == DMC0)
+        if (ch == DMC0) {
                 reg = (S5P_VA_DMC0 + 0x30);
-        else if (ch == DMC1)
+        } else if (ch == DMC1) {
                 reg = (S5P_VA_DMC1 + 0x30);
-        else
+        } else {
                 printk(KERN_ERR "Cannot find DMC port\n");
+                return;
+        }
 
         /* Find current DRAM frequency */
         tmp = s5pv210_dram_conf[ch].freq;