openwrtv3/target/linux/ar71xx/patches-2.6.35/110-usb-ehci-add-war-for-synopsys-hc-bug.patch

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--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -1194,6 +1194,9 @@ static void end_unlink_async (struct ehc
ehci->reclaim = NULL;
start_unlink_async (ehci, next);
}
+
+ if (ehci->has_synopsys_hc_bug)
+ writel((u32)ehci->async->qh_dma, &ehci->regs->async_next);
}
/* makes sure the async qh will become idle */
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -131,6 +131,7 @@ struct ehci_hcd { /* one per controlle
unsigned need_io_watchdog:1;
unsigned broken_periodic:1;
unsigned fs_i_thresh:1; /* Intel iso scheduling */
+ unsigned has_synopsys_hc_bug:1; /* Synopsys HC */
/* required for usb32 quirk */
#define OHCI_CTRL_HCFS (3 << 6)