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authorSimon Glass <sjg@chromium.org>2011-02-07 14:42:16 -0800
committerRemy Bohmer <linux@bohmer.net>2011-02-19 20:32:34 +0100
commit96820a35873b4c005f732432c6a168decc9d22b9 (patch)
tree181c14ab100fc6075409b23b43b00b363dacdc4e /drivers/usb/host/ehci-hcd.c
parentefb063390d2d1e712c2c8110911616244d562c4b (diff)
Fix EHCI usb submit timeout and unify with OHCI
Changed both to use a common timeout for URB submission, since they were using different values and EHCI's was too short. Also fixed EHCI to actually check if urb submission succeeded, rather than silently continuing into the weeds. Change-Id: I7f71499ffaa05187d8e5618db2419e1606007b82 Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/usb/host/ehci-hcd.c')
-rw-r--r--drivers/usb/host/ehci-hcd.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 6eb38a4131..70c02c9deb 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -319,6 +319,7 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
uint32_t endpt, token, usbsts;
uint32_t c, toggle;
uint32_t cmd;
+ int timeout;
int ret = 0;
debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p\n", dev, pipe,
@@ -447,6 +448,7 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
/* Wait for TDs to be processed. */
ts = get_timer(0);
vtd = td;
+ timeout = USB_TIMEOUT_MS(pipe);
do {
/* Invalidate dcache */
ehci_invalidate_dcache(&qh_list);
@@ -454,7 +456,13 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
if (!(token & 0x80))
break;
WATCHDOG_RESET();
- } while (get_timer(ts) < CONFIG_SYS_HZ);
+ } while (get_timer(ts) < timeout);
+
+ /* Check that the TD processing happened */
+ if (token & 0x80) {
+ printf("EHCI timed out on TD - token=%#x\n", token);
+ goto fail;
+ }
/* Disable async schedule. */
cmd = ehci_readl(&hcor->or_usbcmd);