Commit baab93af authored by Alex He's avatar Alex He Committed by Greg Kroah-Hartman
Browse files

USB: EHCI: ASPM quirk of ISOC on AMD Hudson 



AMD Hudson also needs the same ASPM quirk as SB800

Signed-off-by: default avatarAlex He <alex.he@amd.com>
Cc: stable <stable@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 1e4cba8b

drivers/usb/host/ehci-pci.c

+20 −13
Original line number Diff line number Diff line
@@ -44,28 +44,35 @@ static int ehci_pci_reinit(struct ehci_hcd *ehci, struct pci_dev *pdev) 
	return 0;

}



static int ehci_quirk_amd_SB800(struct ehci_hcd *ehci)

static int ehci_quirk_amd_hudson(struct ehci_hcd *ehci)

{

	struct pci_dev *amd_smbus_dev;

	u8 rev = 0;



	amd_smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI, 0x4385, NULL);

	if (amd_smbus_dev) {

		pci_read_config_byte(amd_smbus_dev, PCI_REVISION_ID, &rev);

		if (rev < 0x40) {

			pci_dev_put(amd_smbus_dev);

			amd_smbus_dev = NULL;

			return 0;

		}

	} else {

		amd_smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x780b, NULL);

		if (!amd_smbus_dev)

			return 0;



		pci_read_config_byte(amd_smbus_dev, PCI_REVISION_ID, &rev);

	if (rev < 0x40) {

		if (rev < 0x11 || rev > 0x18) {

			pci_dev_put(amd_smbus_dev);

			amd_smbus_dev = NULL;

			return 0;

		}

	}



	if (!amd_nb_dev)

		amd_nb_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x1510, NULL);

	if (!amd_nb_dev)

		ehci_err(ehci, "QUIRK: unable to get AMD NB device\n");



	ehci_info(ehci, "QUIRK: Enable AMD SB800 L1 fix\n");

	ehci_info(ehci, "QUIRK: Enable exception for AMD Hudson ASPM\n");



	pci_dev_put(amd_smbus_dev);

	amd_smbus_dev = NULL;
@@ -131,7 +138,7 @@ static int ehci_pci_setup(struct usb_hcd *hcd) 
	/* cache this readonly data; minimize chip reads */

	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);



	if (ehci_quirk_amd_SB800(ehci))

	if (ehci_quirk_amd_hudson(ehci))

		ehci->amd_l1_fix = 1;



	retval = ehci_halt(ehci);