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openwrt-xburst/target/linux/ar71xx/patches-2.6.35/110-usb-ehci-add-war-for-synopsys-hc-bug.patch
acoul a6f330452b ar71xx: add kernel 2.6.35 preliminary support
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21734 3c298f89-4303-0410-b956-a3cf2f4a3e73
2010-06-09 10:45:47 +00:00

23 lines
687 B
Diff

--- 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
@@ -129,6 +129,7 @@ struct ehci_hcd { /* one per controlle
unsigned has_amcc_usb23:1;
unsigned need_io_watchdog:1;
unsigned broken_periodic:1;
+ unsigned has_synopsys_hc_bug:1; /* Synopsys HC */
/* required for usb32 quirk */
#define OHCI_CTRL_HCFS (3 << 6)