From: Gabor Juhos <juhosg@openwrt.org>
Date: Thu, 23 Apr 2009 12:24:50 +0000 (+0000)
Subject: add a workaround for the Synopsys EHCI core * http://www.mail-archive.com/linux-usb... 
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=83c93d656da7c22f6b88f04be1bce62ef8cd9fd2;p=openwrt%2Fstaging%2Fjow.git

add a workaround for the Synopsys EHCI core * mail-archive.com/linux-usb-devel@lists.sourceforge.net/msg45345.html

SVN-Revision: 15348
---

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 */
+