imx6q-cpufreq: fix return value check in imx6q_cpufreq_probe()

In case of error, the function devm_regulator_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>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
index d6b6ef350cb621f49323b4e8ff4c61b41a9cc69d..54e336de373bf60918fc515e12b5fd273cbf8419 100644 (file)
--- a/drivers/cpufreq/imx6q-cpufreq.c
+++ b/drivers/cpufreq/imx6q-cpufreq.c
@@ -245,7 +245,7 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
        arm_reg = devm_regulator_get(cpu_dev, "arm");
        pu_reg = devm_regulator_get(cpu_dev, "pu");
        soc_reg = devm_regulator_get(cpu_dev, "soc");
-       if (!arm_reg || !pu_reg || !soc_reg) {
+       if (IS_ERR(arm_reg) || IS_ERR(pu_reg) || IS_ERR(soc_reg)) {
                dev_err(cpu_dev, "failed to get regulators\n");
                ret = -ENOENT;
                goto put_node;