mfd: hi655x: Fix return value check in hi655x_pmic_probe()

In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR(). Also remove unneeded error handling of
platform_get_resource().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 2 insertions, 5 deletions

diff --git a/drivers/mfd/hi655x-pmic.c b/drivers/mfd/hi655x-pmic.c
index e955a0c6f40b..0fc62995695b 100644
--- a/drivers/mfd/hi655x-pmic.c
+++ b/drivers/mfd/hi655x-pmic.c
@@ -105,12 +105,9 @@ static int hi655x_pmic_probe(struct platform_device *pdev)
         pmic->dev = dev;
 
         pmic->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        if (!pmic->res)
-                return -ENOENT;
-
         base = devm_ioremap_resource(dev, pmic->res);
-        if (!base)
-                return -ENOMEM;
+        if (IS_ERR(base))
+                return PTR_ERR(base);
 
         pmic->regmap = devm_regmap_init_mmio_clk(dev, NULL, base,
                                                  &hi655x_regmap_config);