diff options
Diffstat (limited to 'drivers/usb/host/pci-quirks.c')
| -rw-r--r-- | drivers/usb/host/pci-quirks.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index 2f3acebb577a..ce636466edb7 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -233,10 +233,8 @@ commit: spin_unlock_irqrestore(&amd_lock, flags); - if (info.nb_dev) - pci_dev_put(info.nb_dev); - if (info.smbus_dev) - pci_dev_put(info.smbus_dev); + pci_dev_put(info.nb_dev); + pci_dev_put(info.smbus_dev); } else { /* no race - commit the result */ @@ -447,10 +445,8 @@ void usb_amd_dev_put(void) spin_unlock_irqrestore(&amd_lock, flags); - if (nb) - pci_dev_put(nb); - if (smbus) - pci_dev_put(smbus); + pci_dev_put(nb); + pci_dev_put(smbus); } EXPORT_SYMBOL_GPL(usb_amd_dev_put); @@ -571,7 +567,8 @@ static void quirk_usb_handoff_ohci(struct pci_dev *pdev) { void __iomem *base; u32 control; - u32 fminterval; + u32 fminterval = 0; + bool no_fminterval = false; int cnt; if (!mmio_resource_enabled(pdev, 0)) @@ -581,6 +578,13 @@ static void quirk_usb_handoff_ohci(struct pci_dev *pdev) if (base == NULL) return; + /* + * ULi M5237 OHCI controller locks the whole system when accessing + * the OHCI_FMINTERVAL offset. + */ + if (pdev->vendor == PCI_VENDOR_ID_AL && pdev->device == 0x5237) + no_fminterval = true; + control = readl(base + OHCI_CONTROL); /* On PA-RISC, PDC can leave IR set incorrectly; ignore it there. */ @@ -619,7 +623,9 @@ static void quirk_usb_handoff_ohci(struct pci_dev *pdev) } /* software reset of the controller, preserving HcFmInterval */ - fminterval = readl(base + OHCI_FMINTERVAL); + if (!no_fminterval) + fminterval = readl(base + OHCI_FMINTERVAL); + writel(OHCI_HCR, base + OHCI_CMDSTATUS); /* reset requires max 10 us delay */ @@ -628,7 +634,9 @@ static void quirk_usb_handoff_ohci(struct pci_dev *pdev) break; udelay(1); } - writel(fminterval, base + OHCI_FMINTERVAL); + + if (!no_fminterval) + writel(fminterval, base + OHCI_FMINTERVAL); /* Now the controller is safely in SUSPEND and nothing can wake it up */ iounmap(base); |
