gpio: mxc: Use helper function devm_clk_get_optional_enabled()

Since commit 7ef9651e9792 ("clk: Provide new devm_clk helpers for
prepared and enabled clocks"), devm_clk_get_optional() and
clk_prepare_enable() can now be replaced by
devm_clk_get_optional_enabled() when the driver enables (and possibly
prepares) the clocks for the whole lifetime of the device. Moreover,
it is no longer necessary to unprepare and disable the clocks explicitly.

Signed-off-by: Li Zetao <lizetao1@huawei.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index 004c6ad..4cb455b 100644 (file)
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -452,16 +452,10 @@ static int mxc_gpio_probe(struct platform_device *pdev)
                return port->irq;
 
        /* the controller clock is optional */
-       port->clk = devm_clk_get_optional(&pdev->dev, NULL);
+       port->clk = devm_clk_get_optional_enabled(&pdev->dev, NULL);
        if (IS_ERR(port->clk))
                return PTR_ERR(port->clk);
 
-       err = clk_prepare_enable(port->clk);
-       if (err) {
-               dev_err(&pdev->dev, "Unable to enable clock.\n");
-               return err;
-       }
-
        if (of_device_is_compatible(np, "fsl,imx7d-gpio"))
                port->power_off = true;
 
@@ -535,7 +529,6 @@ out_irqdomain_remove:
 out_bgio:
        pm_runtime_disable(&pdev->dev);
        pm_runtime_put_noidle(&pdev->dev);
-       clk_disable_unprepare(port->clk);
        dev_info(&pdev->dev, "%s failed with errno %d\n", __func__, err);
        return err;
 }