usb: phy: phy-generic: Check clk_prepare_enable() error

clk_prepare_enable() may fail, so we should better check its return
value and propagate it in the case of failure.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c
index 980c9de..427efb5 100644 (file)
--- a/drivers/usb/phy/phy-generic.c
+++ b/drivers/usb/phy/phy-generic.c
@@ -144,14 +144,18 @@ static irqreturn_t nop_gpio_vbus_thread(int irq, void *data)
 int usb_gen_phy_init(struct usb_phy *phy)
 {
        struct usb_phy_generic *nop = dev_get_drvdata(phy->dev);
+       int ret;
 
        if (!IS_ERR(nop->vcc)) {
                if (regulator_enable(nop->vcc))
                        dev_err(phy->dev, "Failed to enable power\n");
        }
 
-       if (!IS_ERR(nop->clk))
-               clk_prepare_enable(nop->clk);
+       if (!IS_ERR(nop->clk)) {
+               ret = clk_prepare_enable(nop->clk);
+               if (ret)
+                       return ret;
+       }
 
        nop_reset(nop);