diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 7f32793626e1a..0ccb7399e894f 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -147,6 +147,9 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) (pdev->device == 0x15e0 || pdev->device == 0x15e1)) xhci->quirks |= XHCI_SNPS_BROKEN_SUSPEND; + if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x15e5) + xhci->quirks |= XHCI_DISABLE_SPARSE; + if (pdev->vendor == PCI_VENDOR_ID_AMD) xhci->quirks |= XHCI_TRUST_TX_LENGTH; @@ -346,6 +349,15 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) /* USB 2.0 roothub is stored in the PCI device now. */ hcd = dev_get_drvdata(&dev->dev); xhci = hcd_to_xhci(hcd); + + if (xhci->quirks & XHCI_DISABLE_SPARSE) { + u32 reg; + + reg = readl(hcd->regs + 0xC12C); + reg &= ~BIT(17); + writel(reg, hcd->regs + 0xC12C); + } + xhci->shared_hcd = usb_create_shared_hcd(driver, &dev->dev, pci_name(dev), hcd); if (!xhci->shared_hcd) { diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 02f972e464ab0..037094f551efe 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1873,6 +1873,7 @@ struct xhci_hcd { #define XHCI_DEFAULT_PM_RUNTIME_ALLOW BIT_ULL(33) #define XHCI_RESET_PLL_ON_DISCONNECT BIT_ULL(34) #define XHCI_SNPS_BROKEN_SUSPEND BIT_ULL(35) +#define XHCI_DISABLE_SPARSE BIT_ULL(37) unsigned int num_active_eps; unsigned int limit_active_eps;