linux-kernel - Re: WARNINGs in usb-serial.c

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Message-ID: <20090903183637.GA5140@suse.de>
Date:	Thu, 3 Sep 2009 11:36:37 -0700
From:	Greg KH <gregkh@...e.de>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	alan@...ux.intel.com, stern@...land.harvard.edu
Subject: Re: WARNINGs in usb-serial.c

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?

thanks,

greg k-h
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