From 51e563e3c11492748d11d3846b6d325426427a95 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 3 Jul 2013 16:34:13 -0300 Subject: usb: phy: phy-mxs-usb: Check the return value from stmp_reset_block() stmp_reset_block() may fail, so let's check its return value and propagate it in the case of error. Acked-by: Shawn Guo Signed-off-by: Fabio Estevam Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-mxs-usb.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) (limited to 'drivers/usb/phy/phy-mxs-usb.c') diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index bd601c5..fdd33b4 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -41,11 +41,14 @@ struct mxs_phy { #define to_mxs_phy(p) container_of((p), struct mxs_phy, phy) -static void mxs_phy_hw_init(struct mxs_phy *mxs_phy) +static int mxs_phy_hw_init(struct mxs_phy *mxs_phy) { + int ret; void __iomem *base = mxs_phy->phy.io_priv; - stmp_reset_block(base + HW_USBPHY_CTRL); + ret = stmp_reset_block(base + HW_USBPHY_CTRL); + if (ret) + return ret; /* Power up the PHY */ writel(0, base + HW_USBPHY_PWD); @@ -54,6 +57,8 @@ static void mxs_phy_hw_init(struct mxs_phy *mxs_phy) writel(BM_USBPHY_CTRL_ENUTMILEVEL2 | BM_USBPHY_CTRL_ENUTMILEVEL3, base + HW_USBPHY_CTRL_SET); + + return 0; } static int mxs_phy_init(struct usb_phy *phy) @@ -61,9 +66,7 @@ static int mxs_phy_init(struct usb_phy *phy) struct mxs_phy *mxs_phy = to_mxs_phy(phy); clk_prepare_enable(mxs_phy->clk); - mxs_phy_hw_init(mxs_phy); - - return 0; + return mxs_phy_hw_init(mxs_phy); } static void mxs_phy_shutdown(struct usb_phy *phy) -- cgit v1.1