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authorGabor Juhos <juhosg@openwrt.org>2009-04-23 12:24:50 +0000
committerGabor Juhos <juhosg@openwrt.org>2009-04-23 12:24:50 +0000
commit83c93d656da7c22f6b88f04be1bce62ef8cd9fd2 (patch)
tree215d561b40c914898f35baebcc2c1a510a6ec1e0 /target/linux
parent90cd9b70a3f5c1d69867ed9083c39d1a5ee5a3dd (diff)
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add a workaround for the Synopsys EHCI core * http://www.mail-archive.com/linux-usb-devel@lists.sourceforge.net/msg45345.html
SVN-Revision: 15348
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/ar71xx/patches-2.6.28/110-usb-ehci-add-war-for-synopsys-hc-bug.patch22
1 files changed, 22 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-2.6.28/110-usb-ehci-add-war-for-synopsys-hc-bug.patch b/target/linux/ar71xx/patches-2.6.28/110-usb-ehci-add-war-for-synopsys-hc-bug.patch
new file mode 100644
index 0000000000..3aa2479dbe
--- /dev/null
+++ b/target/linux/ar71xx/patches-2.6.28/110-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
+@@ -1050,6 +1050,9 @@ 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
+@@ -124,6 +124,7 @@ struct ehci_hcd { /* one per controlle
+ unsigned has_fsl_port_bug:1; /* FreeScale */
+ unsigned big_endian_mmio:1;
+ unsigned big_endian_desc:1;
++ unsigned has_synopsys_hc_bug:1; /* Synopsys HC */
+
+ u8 sbrn; /* packed release number */
+