Hi Dan, On Mon, Jul 07, 2014 at 11:41:20AM -0500, Dan Williams wrote: > On Mon, 2014-07-07 at 11:06 +0200, Olivier Sobrie wrote: > > When the module sends bursts of data, sometimes a deadlock happens in > > the hso driver when the tty buffer doesn't get the chance to be flushed > > quickly enough. > > > > To avoid this, first, we remove the endless while loop in > > put_rx_bufdata() which is the root cause of the deadlock. > > Secondly, when there is no room anymore in the tty buffer, we set up a > > timer of 100 msecs to give a chance to the upper layer to flush the tty > > buffer and make room for new data. > > I assume this problem happens when using PPP for data transfer, instead > of using the network port that the modules expose? Or maybe the NMEA > port? I can't imagine that AT commands would make this happen... Yes it happens when using ppp for data transfer. The transfer of a large file sometimes triggers the problem. -- Olivier -- 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
