gpio: mlxbf3: add an error code check in mlxbf3_gpio_probe

[ Upstream commit d460e9c2075164e9b1fa9c4c95f8c05517bd8752 ]

Clang static checker warning: Value stored to 'ret' is never read.
bgpio_init() returns error code if failed, it's better to add this
check.

Fixes: cd33f216d241 ("gpio: mlxbf3: Add gpio driver support")
Signed-off-by: Su Hui <suhui@nfschina.com>
[Bartosz: add the Fixes: tag]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpio/gpio-mlxbf3.c b/drivers/gpio/gpio-mlxbf3.c
index 7a3e176..d5906d4 100644 (file)
--- a/drivers/gpio/gpio-mlxbf3.c
+++ b/drivers/gpio/gpio-mlxbf3.c
@@ -215,6 +215,8 @@ static int mlxbf3_gpio_probe(struct platform_device *pdev)
                        gs->gpio_clr_io + MLXBF_GPIO_FW_DATA_OUT_CLEAR,
                        gs->gpio_set_io + MLXBF_GPIO_FW_OUTPUT_ENABLE_SET,
                        gs->gpio_clr_io + MLXBF_GPIO_FW_OUTPUT_ENABLE_CLEAR, 0);
+       if (ret)
+               return dev_err_probe(dev, ret, "%s: bgpio_init() failed", __func__);
 
        gc->request = gpiochip_generic_request;
        gc->free = gpiochip_generic_free;