On Sunday 27 March 2005 4:31 pm, Andrew Morton wrote:
>
> http://bugme.osdl.org/show_bug.cgi?id=4408
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread -1209626496 (LWP 26124)]
> usb_reset (dev=0x0) at linux.c:671
> 671 ret = ioctl(dev->fd, IOCTL_USB_RESET, NULL);
>
> log messages
> usb 2-2: usbfs: interface 0 claimed while 'lt-owhttpd' sets config #1
There is clearly a bug in the lt-owhttpd code. It
shouldn't be triggering that warning, and it also
loooks like issuing a SET_CONFIGURATION is incorrect.
It being 2.6.12-rc2 now, it's probably time to address
the related "FIXME in 2.6.10 or so" bug, as in the
attached patch.
It's very possible that once that lt-owhttpd code is
fixed to work with this patch, then this SEGV will
also be fixed.
- Dave
This patch turns a user mode driver error into a hard error, and updates the
relevant diagnostic slightly to help troubleshooting.
This had been left as a soft error to give various user mode drivers a change
to be properly fixed, with the statement that starting in about 2.6.10 it would
be changed. It had been mostly safe as a soft error ... but that can not be
guaranteed. Now that a year has passed, it's time to really insist that the
user mode drivers finally fix their relevant bugs.
Signed-off-by: David Brownell <[EMAIL PROTECTED]>
--- 1.76/drivers/usb/core/devio.c 2005-03-09 12:18:37 -08:00
+++ edited/drivers/usb/core/devio.c 2005-04-04 13:02:02 -07:00
@@ -786,16 +786,16 @@
for (i = 0; i < actconfig->desc.bNumInterfaces; ++i) {
if (usb_interface_claimed(actconfig->interface[i])) {
dev_warn (&ps->dev->dev,
- "usbfs: interface %d claimed "
+ "usbfs: interface %d claimed by %s "
"while '%s' sets config #%d\n",
actconfig->interface[i]
->cur_altsetting
->desc.bInterfaceNumber,
+ actconfig->interface[i]
+ ->dev.driver->name,
current->comm, u);
-#if 0 /* FIXME: enable in 2.6.10 or so */
status = -EBUSY;
break;
-#endif
}
}
}
