clk_prepare_enable() can fail here and we must check its return value.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
Changes in v2:
Remove useless initialization of retval.
---
drivers/usb/host/ohci-pxa27x.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index 79efde8f..21c010f 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -274,14 +274,16 @@ static inline void pxa27x_reset_hc(struct pxa27x_ohci *pxa_ohci)
static int pxa27x_start_hc(struct pxa27x_ohci *pxa_ohci, struct device *dev)
{
- int retval = 0;
+ int retval;
struct pxaohci_platform_data *inf;
uint32_t uhchr;
struct usb_hcd *hcd = dev_get_drvdata(dev);
inf = dev_get_platdata(dev);
- clk_prepare_enable(pxa_ohci->clk);
+ retval = clk_prepare_enable(pxa_ohci->clk);
+ if (retval)
+ return retval;
pxa27x_reset_hc(pxa_ohci);
@@ -296,8 +298,10 @@ static int pxa27x_start_hc(struct pxa27x_ohci *pxa_ohci, struct device *dev)
if (inf->init)
retval = inf->init(dev);
- if (retval < 0)
+ if (retval < 0) {
+ clk_disable_unprepare(pxa_ohci->clk);
return retval;
+ }
if (cpu_is_pxa3xx())
pxa3xx_u2d_start_hc(&hcd->self);
--
1.9.1
--
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