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openwrt-xburst/target/linux/ar71xx/patches-2.6.38/110-usb-ehci-add-war-for-synopsys-hc-bug.patch
acoul dfba2f5fb1 linux/ar71xx: add 2.6.38 preliminary support
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26746 3c298f89-4303-0410-b956-a3cf2f4a3e73
2011-04-21 11:45:23 +00:00

23 lines
734 B
Diff

--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -1181,6 +1181,9 @@ 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
@@ -134,6 +134,7 @@ struct ehci_hcd { /* one per controlle
unsigned amd_l1_fix:1;
unsigned fs_i_thresh:1; /* Intel iso scheduling */
unsigned use_dummy_qh:1; /* AMD Frame List table quirk*/
+ unsigned has_synopsys_hc_bug:1; /* Synopsys HC */
/* required for usb32 quirk */
#define OHCI_CTRL_HCFS (3 << 6)