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Code Issues

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

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SVN-Revision: 15348
This commit is contained in:
Gabor Juhos 2009-04-23 12:24:50 +00:00
parent 90cd9b70a3
commit 83c93d656d
1 changed files with 22 additions and 0 deletions
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22
target/linux/ar71xx/patches-2.6.28/110-usb-ehci-add-war-for-synopsys-hc-bug.patch Normal file
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@ -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 */