On Tue, Jan 21, 2020 at 07:42:16AM +0300, Sergey Organov wrote: > Symptom: application opens /dev/ttyGS0 and starts sending (writing) to > it while either USB cable is not connected, or nobody listens on the > other side of the cable. If driver circular buffer overflows before > connection is established, no data will be written to the USB layer > until/unless /dev/ttyGS0 is closed and re-opened again by the > application (the latter besides having no means of being notified about > the event of establishing of the connection.) > > Fix: on open and/or connect, kick Tx to flush circular buffer data to > USB layer. > > Signed-off-by: Sergey Organov <sorganov@xxxxxxxxx> > --- > > Changes in v2: > > - Add comment to document why tty_wakeup() is kept in place > - Don't add debug print > - Remove NOTE from description Reviewed-by: Michał Mirosław <mirq-linux@xxxxxxxxxxxx> Best Regards, Michał Mirosław
