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Diffstat (limited to 'target/linux/ar71xx/patches-2.6.31/110-usb-ehci-add-war-for-synopsys-hc-bug.patch')
-rw-r--r--target/linux/ar71xx/patches-2.6.31/110-usb-ehci-add-war-for-synopsys-hc-bug.patch22
1 files changed, 22 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-2.6.31/110-usb-ehci-add-war-for-synopsys-hc-bug.patch b/target/linux/ar71xx/patches-2.6.31/110-usb-ehci-add-war-for-synopsys-hc-bug.patch
new file mode 100644
index 0000000000..a614999653
--- /dev/null
+++ b/target/linux/ar71xx/patches-2.6.31/110-usb-ehci-add-war-for-synopsys-hc-bug.patch
@@ -0,0 +1,22 @@
+--- a/drivers/usb/host/ehci-q.c
++++ b/drivers/usb/host/ehci-q.c
+@@ -1128,6 +1128,9 @@ 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
+@@ -126,6 +126,7 @@ struct ehci_hcd { /* one per controlle
+ unsigned big_endian_mmio:1;
+ unsigned big_endian_desc:1;
+ unsigned has_amcc_usb23:1;
++ unsigned has_synopsys_hc_bug:1; /* Synopsys HC */
+
+ /* required for usb32 quirk */
+ #define OHCI_CTRL_HCFS (3 << 6)