Messages in this thread | | | Date | Fri, 4 Sep 2009 10:17:30 -0400 (EDT) | From | Alan Stern <> | Subject | Re: WARNINGs in usb-serial.c |
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On Fri, 4 Sep 2009, Miklos Szeredi wrote:
> On Thu, 3 Sep 2009, Greg KH wrote: > > On Thu, Sep 03, 2009 at 04:13:34PM +0200, Miklos Szeredi wrote: > > > I get the following warnings in 2.6.31-rc. A lot of them: > > > > > > WARNING: at drivers/usb/serial/usb-serial.c:414 serial_write_room+0x59/0x6e [usbserial]() > > > WARNING: at drivers/usb/serial/usb-serial.c:401 serial_write+0x77/0x9d [usbserial]() > > > > > > This is a huawei-3565 modem. > > > > > > The messages don't seem to hurt, but there's lot of trouble with this > > > gadget. Sometimes it just doesn't work after a while and a reboot is > > > needed. Sometimes it hangs the kernel after suspend, etc. Not sure > > > if this is related to the warnings... > > > > {sigh} > > > > The tty layer changes are being a pain here :( > > > > Alan Stern posted a set of patches to the linux-usb list to hopefully > > address stuff like this, is there any way you could test them out to see > > if they help or not? > > Nope, it doesn't seem to help. Still got the same warnings with the > patched kernel (latest git + ghk tree + usbserial patches).
What were you doing when these warnings appeared?
Do you want to try some debugging? Add a line saying
#define DEBUG
near the beginning of the usb-serial.c source file, before all the #include lines.
Alan Stern
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