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path: root/target/linux/generic-2.4/patches/208-usb2_fix.patch
blob: 5c90e63e0c4f1ade7eb4f66642dd0220d23bf187 (plain)
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--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -782,6 +782,11 @@ static void qh_link_async (struct ehci_h
 		if (!(cmd & CMD_ASE)) {
 			/* in case a clear of CMD_ASE didn't take yet */
 			(void) handshake (&ehci->regs->status, STS_ASS, 0, 150);
+
+			/* force async head to be valid */
+			writel ((u32)ehci->async->qh_dma,
+					&ehci->regs->async_next);
+
 			cmd |= CMD_ASE | CMD_RUN;
 			writel (cmd, &ehci->regs->command);
 			ehci->hcd.state = USB_STATE_RUNNING;