diff options
Diffstat (limited to 'drivers/usb/host/pci-quirks.c')
| -rw-r--r-- | drivers/usb/host/pci-quirks.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index 83b5f9cea85..4c502c890eb 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -169,6 +169,7 @@ static int __devinit mmio_resource_enabled(struct pci_dev *pdev, int idx) static void __devinit quirk_usb_handoff_ohci(struct pci_dev *pdev) { void __iomem *base; + u32 control; if (!mmio_resource_enabled(pdev, 0)) return; @@ -177,10 +178,14 @@ static void __devinit quirk_usb_handoff_ohci(struct pci_dev *pdev) if (base == NULL) return; + control = readl(base + OHCI_CONTROL); + /* On PA-RISC, PDC can leave IR set incorrectly; ignore it there. */ -#ifndef __hppa__ -{ - u32 control = readl(base + OHCI_CONTROL); +#ifdef __hppa__ +#define OHCI_CTRL_MASK (OHCI_CTRL_RWC | OHCI_CTRL_IR) +#else +#define OHCI_CTRL_MASK OHCI_CTRL_RWC + if (control & OHCI_CTRL_IR) { int wait_time = 500; /* arbitrary; 5 seconds */ writel(OHCI_INTR_OC, base + OHCI_INTRENABLE); @@ -194,13 +199,12 @@ static void __devinit quirk_usb_handoff_ohci(struct pci_dev *pdev) dev_warn(&pdev->dev, "OHCI: BIOS handoff failed" " (BIOS bug?) %08x\n", readl(base + OHCI_CONTROL)); - - /* reset controller, preserving RWC */ - writel(control & OHCI_CTRL_RWC, base + OHCI_CONTROL); } -} #endif + /* reset controller, preserving RWC (and possibly IR) */ + writel(control & OHCI_CTRL_MASK, base + OHCI_CONTROL); + /* * disable interrupts */ @@ -338,8 +342,6 @@ static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev) writel(0x3f, op_reg_base + EHCI_USBSTS); iounmap(base); - - return; } /* |