diff options
Diffstat (limited to 'drivers/usb/host/ehci-fsl.c')
| -rw-r--r-- | drivers/usb/host/ehci-fsl.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index e90344a17631..c26a82e83f6e 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -125,7 +125,7 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver, */ if (pdata->init && pdata->init(pdev)) { retval = -ENODEV; - goto err3; + goto err4; } /* Enable USB controller, 83xx or 8536 */ @@ -239,7 +239,7 @@ static void ehci_fsl_setup_phy(struct ehci_hcd *ehci, ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]); } -static void ehci_fsl_usb_setup(struct ehci_hcd *ehci) +static int ehci_fsl_usb_setup(struct ehci_hcd *ehci) { struct usb_hcd *hcd = ehci_to_hcd(ehci); struct fsl_usb2_platform_data *pdata; @@ -299,12 +299,19 @@ static void ehci_fsl_usb_setup(struct ehci_hcd *ehci) #endif out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001); } + + if (!(in_be32(non_ehci + FSL_SOC_USB_CTRL) & CTRL_PHY_CLK_VALID)) { + printk(KERN_WARNING "fsl-ehci: USB PHY clock invalid\n"); + return -ENODEV; + } + return 0; } /* called after powerup, by probe or system-pm "wakeup" */ static int ehci_fsl_reinit(struct ehci_hcd *ehci) { - ehci_fsl_usb_setup(ehci); + if (ehci_fsl_usb_setup(ehci)) + return -ENODEV; ehci_port_power(ehci, 0); return 0; |