diff options
Diffstat (limited to 'drivers/usb/host/ehci-hcd.c')
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 8bd1eb8..3ef204d 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -201,6 +201,9 @@ static int ehci_shutdown(struct ehci_ctrl *ctrl) int i, ret = 0; uint32_t cmd, reg; + if (!ctrl || !ctrl->hcor) + return -EINVAL; + cmd = ehci_readl(&ctrl->hcor->or_usbcmd); cmd &= ~(CMD_PSE | CMD_ASE); ehci_writel(&ctrl->hcor->or_usbcmd, cmd); |