[ar71xx] add patches for 2.6.31

[openwrt/svn-archive/archive.git] / target / linux / ar71xx / patches-2.6.31 / 110-usb-ehci-add-war-for-synopsys-hc-bug.patch

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 (file)
index 0000000..a614999
--- /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)