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usb: host: ohci-pxa27x: Handle return value of clk_prepare_enable 

clk_prepare_enable() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Arvind Yadav 2017-06-28 10:21:28 +05:30 committed by Greg Kroah-Hartman
parent fd90f73a99
commit af06d0094f
1 changed files with 7 additions and 3 deletions
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10
drivers/usb/host/ohci-pxa27x.c
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@ -274,14 +274,16 @@ extern void pxa27x_clear_otgph(void);
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);