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| author | Arvind Yadav <arvind.yadav.cs@gmail.com> | 2017-06-28 07:51:28 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-29 15:49:06 +0300 |
| commit | af06d0094fa7fc2613294d409128671856c5471d (patch) | |
| tree | 6adf8b6d36c63b21f25de4f451412e762db18dd9 /drivers/usb/host/ohci-pxa27x.c | |
| parent | fd90f73a9925f248d696bde1cfc836d9fda5570d (diff) | |
| download | linux-af06d0094fa7fc2613294d409128671856c5471d.tar.xz | |
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>
Diffstat (limited to 'drivers/usb/host/ohci-pxa27x.c')
| -rw-r--r-- | drivers/usb/host/ohci-pxa27x.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c index 79efde8f21e0..21c010ffb03c 100644 --- a/drivers/usb/host/ohci-pxa27x.c +++ b/drivers/usb/host/ohci-pxa27x.c @@ -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); |