This is a note to let you know that I've just added the patch titled
USB: EHCI: ASPM quirk of ISOC on AMD Hudson
to the 2.6.37-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-ehci-aspm-quirk-of-isoc-on-amd-hudson.patch
and it can be found in the queue-2.6.37 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From baab93afc2844b68d57b0dcca5e1d34c5d7cf411 Mon Sep 17 00:00:00 2001
From: Alex He <[email protected]>
Date: Tue, 21 Dec 2010 17:45:46 +0800
Subject: USB: EHCI: ASPM quirk of ISOC on AMD Hudson
From: Alex He <[email protected]>
commit baab93afc2844b68d57b0dcca5e1d34c5d7cf411 upstream.
AMD Hudson also needs the same ASPM quirk as SB800
Signed-off-by: Alex He <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/host/ehci-pci.c | 33 ++++++++++++++++++++-------------
1 file changed, 20 insertions(+), 13 deletions(-)
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -41,28 +41,35 @@ static int ehci_pci_reinit(struct ehci_h
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)
- return 0;
-
- 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;
+ 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 < 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;
@@ -128,7 +135,7 @@ static int ehci_pci_setup(struct usb_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);
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.37/usb-ehci-aspm-quirk-of-isoc-on-amd-hudson.patch
queue-2.6.37/usb-ehci-aspm-quirk-of-isoc-on-amd-sb800.patch
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