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>

diff --git a/arch/arm/mach-s5pv210/cpufreq.c b/arch/arm/mach-s5pv210/cpufreq.c
index 22046e2..153af8b 100644 (file)
--- 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;