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Index: linux-2.4.35.4/drivers/usb/host/ehci-q.c
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===================================================================
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--- linux-2.4.35.4.orig/drivers/usb/host/ehci-q.c 2007-12-15 05:19:39.114650056 +0100
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+++ linux-2.4.35.4/drivers/usb/host/ehci-q.c 2007-12-15 05:20:00.107846389 +0100
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@@ -782,6 +782,11 @@
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if (!(cmd & CMD_ASE)) {
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/* in case a clear of CMD_ASE didn't take yet */
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(void) handshake (&ehci->regs->status, STS_ASS, 0, 150);
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+
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+ /* force async head to be valid */
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+ writel ((u32)ehci->async->qh_dma,
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+ &ehci->regs->async_next);
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+
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cmd |= CMD_ASE | CMD_RUN;
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writel (cmd, &ehci->regs->command);
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ehci->hcd.state = USB_STATE_RUNNING;
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