On Tue, Dec 01, 2020 at 09:52:49AM +0800, jiladahe1997 wrote: > From: Mingrui Ren <[email protected]> > > As described in Documentation, poll_init() is called by kgdb to initialize > hardware which support both poll_put_char() and poll_get_char(). > > It's necessary to enable TXEN bit, otherwise, it will cause hardware fault > and kernel panic when calling imx_poll_put_char(). > > Generally, if use /dev/ttymxc0 as kgdb console as well as system > console, ttymxc0 is initialized early by system console which does enable TXEN > bit.But when use /dev/ttymxc1 as kgbd console, ttymxc1 is only initialized by > imx_poll_init() cannot enable the TXEN bit, which will cause kernel panic. > > Signed-off-by: Mingrui Ren <[email protected]> > --- > drivers/tty/serial/imx.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-)
You sent this twice? Which one is "correct"? I'll drop both from my patch queue and wait for just one to be resent. thanks, greg k-h
