ARM: mvebu: fix return value check in armada_xp_pmsu_cpufreq_init()

In case of error, the function clk_get() returns ERR_PTR()
and never returns NULL. The NULL test in the return value
check should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Link: https://lkml.kernel.org/r/1406038688-26417-1-git-send-email-weiyj_lk@163.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c
index 0ca285fdd5695fc25aca9237af5ea0f8910a8e7e..0b617ae3ceb96cf956c19f36109e88c4acae0c1d 100644 (file)
--- a/arch/arm/mach-mvebu/pmsu.c
+++ b/arch/arm/mach-mvebu/pmsu.c
@@ -424,9 +424,9 @@ static int __init armada_xp_pmsu_cpufreq_init(void)
                }
 
                clk = clk_get(cpu_dev, 0);
-               if (!clk) {
+               if (IS_ERR(clk)) {
                        pr_err("Cannot get clock for CPU %d\n", cpu);
-                       return -ENODEV;
+                       return PTR_ERR(clk);
                }
 
                /*