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usb: phy: phy-mxs-usb: Check the return value from clk_prepare_enable() 

clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.

Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Fabio Estevam 2013-12-02 01:02:34 -02:00 committed by Felipe Balbi
parent 9510ecee62
commit 67c21fc803
1 changed files with 9 additions and 2 deletions
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11
drivers/usb/phy/phy-mxs-usb.c
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@ -63,9 +63,13 @@ static int mxs_phy_hw_init(struct mxs_phy *mxs_phy)
static int mxs_phy_init(struct usb_phy *phy)
{
int ret;
struct mxs_phy *mxs_phy = to_mxs_phy(phy);
clk_prepare_enable(mxs_phy->clk);
ret = clk_prepare_enable(mxs_phy->clk);
if (ret)
return ret;
return mxs_phy_hw_init(mxs_phy);
}
@ -81,6 +85,7 @@ static void mxs_phy_shutdown(struct usb_phy *phy)
static int mxs_phy_suspend(struct usb_phy *x, int suspend)
{
int ret;
struct mxs_phy *mxs_phy = to_mxs_phy(x);
if (suspend) {
@ -89,7 +94,9 @@ static int mxs_phy_suspend(struct usb_phy *x, int suspend)
x->io_priv + HW_USBPHY_CTRL_SET);
clk_disable_unprepare(mxs_phy->clk);
} else {
clk_prepare_enable(mxs_phy->clk);
ret = clk_prepare_enable(mxs_phy->clk);
if (ret)
return ret;
writel(BM_USBPHY_CTRL_CLKGATE,
x->io_priv + HW_USBPHY_CTRL_CLR);
writel(0, x->io_priv + HW_USBPHY_PWD);