gpio: mxc: Use devm_clk_get_optional instead of devm_clk_get
i.MX SoC's GPIO clock is optional, so it is better to use
devm_clk_get_optional instead of devm_clk_get.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index b281358..7907a87 100644
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -435,12 +435,9 @@ static int mxc_gpio_probe(struct platform_device *pdev)
return port->irq;
/* the controller clock is optional */
- port->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(port->clk)) {
- if (PTR_ERR(port->clk) == -EPROBE_DEFER)
- return -EPROBE_DEFER;
- port->clk = NULL;
- }
+ port->clk = devm_clk_get_optional(&pdev->dev, NULL);
+ if (IS_ERR(port->clk))
+ return PTR_ERR(port->clk);
err = clk_prepare_enable(port->clk);
if (err) {
