Re: Locking problem in usbserial with 2.6.23-git 5a34417f

[Larry Finger <larry.finger@xxxxxxxxxxxx>]

Jiri Kosina wrote:
> On Fri, 19 Oct 2007, Larry Finger wrote:
> 
>> As I said earlier, the lock problem went away; however, I get the 
>> following two kernel warnings:
> 
> That's because I messed up the patch, sorry. The one below should work 
> better.
> 
> 
> 
> From: Jiri Kosina <jkosina@xxxxxxx>
> 
> USB: usbserial - fix potential deadlock between write() and IRQ
> 
> usb_serial_generic_write() doesn't disable interrupts when taking port->lock,
> and could therefore deadlock with usb_serial_generic_read_bulk_callback()
> being called from interrupt, taking the same lock. Fix it.
> 
> Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>

It does work better. With it, I was able to make a dial-up connection and send pings over it.

Larry


-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems?  Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >> http://get.splunk.com/
_______________________________________________
linux-usb-devel@xxxxxxxxxxxxxxxxxxxxx
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel