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openwrt-xburst/target/linux/generic-2.4/patches/208-usb2_fix.patch
agb 0ec45ff596 [kernel] generic-2.4: refresh patches
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15860 3c298f89-4303-0410-b956-a3cf2f4a3e73
2009-05-15 10:36:04 +00:00

15 lines
491 B
Diff

--- 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;