Sorry,
the statement below is not true. After 6 days it crashed
again. This time it is not by BUG because I added special
debug hack into dl_del_list in usb-ohci.c. It dumped some
ED fields which could help you:
+++ drivers/usb/usb-ohci.c Wed May 22 15:41:42 2002
@@ -1577,6 +1577,11 @@
for (ed = ohci->ed_rm_list[frame]; ed != NULL; ed = ed->ed_rm_list) {
tdTailP = dma_to_td (ohci, le32_to_cpup (&ed->hwTailP) &
0xfffffff0);
+ if (!tdTailP) {
+ printk(KERN_ERR "OHCI: tdTailP is NULL, hwTailP=%X info=%X
head=%X\n",
+ ed->hwTailP,ed->hwINFO,ed->hwHeadP);
+ continue; /*devik*/
+ }
tdHeadP = dma_to_td (ohci, le32_to_cpup (&ed->hwHeadP) &
0xfffffff0);
edINFO = le32_to_cpup (&ed->hwINFO);
The output in klog is:
OHCI: tdTailP is NULL, hwTailP=3E0280 info=4000 head=3E0280
usb-ohci.c: unlink URB timeout
pwc isoc_init() submit_urb 0 failed with error -12
pwc isoc_init() submit_urb 1 failed with error -12
pwc isoc_init() submit_urb 0 failed with error -12
[ a lot of these ]
devik
---------- Forwarded message ----------
Date: Sun, 26 May 2002 18:59:34 +0200 (CEST)
From: Martin Devera <[EMAIL PROTECTED]>
To: Greg KH <[EMAIL PROTECTED]>, [EMAIL PROTECTED]
Subject: OHCI BUG disappeared in 2.4.19pre8 :-)
Hello,
as I promised I'm sending result of 2.4.19pre8 testing.
The bug in OHCI didn't appear after 4 days of camera
run. With 2.4.18 it crashed every day.
So that I'd say that 2.4.19pre8 solved it.
Thanks !
devik
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