diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/usb/host/xhci-pci.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 2b445f21b55..6c5024d3f19 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -13,8 +13,8 @@ #include <usb.h> #include <usb/xhci.h> -static void xhci_pci_init(struct udevice *dev, struct xhci_hccr **ret_hccr, - struct xhci_hcor **ret_hcor) +static int xhci_pci_init(struct udevice *dev, struct xhci_hccr **ret_hccr, + struct xhci_hcor **ret_hcor) { struct xhci_hccr *hccr; struct xhci_hcor *hcor; @@ -22,6 +22,11 @@ static void xhci_pci_init(struct udevice *dev, struct xhci_hccr **ret_hccr, hccr = (struct xhci_hccr *)dm_pci_map_bar(dev, PCI_BASE_ADDRESS_0, PCI_REGION_MEM); + if (!hccr) { + printf("xhci-pci init cannot map PCI mem bar\n"); + return -EIO; + } + hcor = (struct xhci_hcor *)((uintptr_t) hccr + HC_LENGTH(xhci_readl(&hccr->cr_capbase))); @@ -35,14 +40,18 @@ static void xhci_pci_init(struct udevice *dev, struct xhci_hccr **ret_hccr, dm_pci_read_config32(dev, PCI_COMMAND, &cmd); cmd |= PCI_COMMAND_MASTER; dm_pci_write_config32(dev, PCI_COMMAND, cmd); + return 0; } static int xhci_pci_probe(struct udevice *dev) { struct xhci_hccr *hccr; struct xhci_hcor *hcor; + int ret; - xhci_pci_init(dev, &hccr, &hcor); + ret = xhci_pci_init(dev, &hccr, &hcor); + if (ret) + return ret; return xhci_register(dev, hccr, hcor); } |