2 files changed, 11 insertions, 10 deletions

diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 9d0ea573aef6..36864f958444 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -169,18 +169,21 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
 		}
 		break;
 	case PCI_VENDOR_ID_ATI:
-		/* SB700 old version has a bug in EHCI controller,
+		/* SB600 and old version of SB700 have a bug in EHCI controller,
 		 * which causes usb devices lose response in some cases.
 		 */
-		if (pdev->device == 0x4396) {
+		if ((pdev->device == 0x4386) || (pdev->device == 0x4396)) {
 			p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
 						 PCI_DEVICE_ID_ATI_SBX00_SMBUS,
 						 NULL);
 			if (!p_smbus)
 				break;
 			rev = p_smbus->revision;
-			if ((rev == 0x3a) || (rev == 0x3b)) {
+			if ((pdev->device == 0x4386) || (rev == 0x3a)
+			    || (rev == 0x3b)) {
 				u8 tmp;
+				ehci_info(ehci, "applying AMD SB600/SB700 USB "
+					"freeze workaround\n");
 				pci_read_config_byte(pdev, 0x53, &tmp);
 				pci_write_config_byte(pdev, 0x53, tmp | (1<<3));
 			}
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index b11798d17ae5..c7d4b5a06bdb 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -183,16 +183,14 @@ timer_action (struct ehci_hcd *ehci, enum ehci_timer_action action)
 	 * the async ring; just the I/O watchdog.  Note that if a
 	 * SHRINK were pending, OFF would never be requested.
 	 */
-	enum ehci_timer_action oldactions = ehci->actions;
+	if (timer_pending(&ehci->watchdog)
+			&& ((BIT(TIMER_ASYNC_SHRINK) | BIT(TIMER_ASYNC_OFF))
+				& ehci->actions))
+		return;
 
 	if (!test_and_set_bit (action, &ehci->actions)) {
 		unsigned long t;
 
-		if (timer_pending(&ehci->watchdog)
-			&& ((BIT(TIMER_ASYNC_SHRINK) | BIT(TIMER_ASYNC_OFF))
-				& oldactions))
-			return;
-
 		switch (action) {
 		case TIMER_IO_WATCHDOG:
 			t = EHCI_IO_JIFFIES;
@@ -208,7 +206,7 @@ timer_action (struct ehci_hcd *ehci, enum ehci_timer_action action)
 			t = DIV_ROUND_UP(EHCI_SHRINK_FRAMES * HZ, 1000) + 1;
 			break;
 		}
-		mod_timer(&ehci->watchdog, round_jiffies(t + jiffies));
+		mod_timer(&ehci->watchdog, t + jiffies);
 	}
 }