Greg KH <greg@xxxxxxxxx> writes: > On Wed, Jan 25, 2012 at 08:34:22PM +0100, Bjørn Mork wrote: >> We're holding the global wdm_mutex through most of wdm_open, including >> when it calls usb_autopm_get_interface. This call can block waiting for >> a resume, which will need to look up the device list. So we deadlock. >> >> Fix by using a dedicated lock for the device list. >> >> Signed-off-by: Bjørn Mork <bjorn@xxxxxxx> >> --- >> v2: A spinlock makes more sense here, as pointed out by Oliver Neukum > > Oliver, any objection to me applying this patch? Please note that it requires the "usb: cdc-wdm: subdriver support" series which I think still is under review. It should really have been part of that series. Sorry for not catching the bug in time. Bjørn -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
