sysmo-bts
/
barebox
9
0
Fork 0
Code Releases Activity

ehci: Restore state after td timeout 

Clear overlay token after TD timeout so that the
next transfer works.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2009-05-20 11:11:52 +02:00
parent 2bb0a3c4dc
commit 77a3b6a96a
1 changed files with 10 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/usb/usb_ehci_core.c
View File

@ -30,6 +30,7 @@
#include <init.h>
#include <xfuncs.h>
#include <clock.h>
#include <errno.h>
#include "usb_ehci.h"
@ -467,9 +468,15 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
/* Invalidate dcache */
ehci_invalidate_dcache(ehci->qh_list);
token = hc32_to_cpu(vtd->qt_token);
if (is_timeout(start, SECOND)) {
printf("TD timeout\n");
break;
if (is_timeout(start, SECOND >> 2)) {
/* Disable async schedule. */
cmd = ehci_readl(&ehci->hcor->or_usbcmd);
cmd &= ~CMD_ASE;
ehci_writel(&ehci->hcor->or_usbcmd, cmd);
ret = handshake(&ehci->hcor->or_usbsts, STD_ASS, 0, 100 * 1000);
ehci_writel(&qh->qh_overlay.qt_token, 0);
return -ETIMEDOUT;
}
} while (token & 0x80);