Hi Alan,
Can you make that code available otherwise it's impossible to see
what the problem might be.
https://source.codeaurora.org/quic/la/kernel/msm-4.9/tree/drivers/tty/serial?h=msm-4.9
As discussed , there not seems a problem as we are getting print
request even when port seems to closed.
tty_ldisc_lock(tty, 5 * HZ);
tty_ldisc_setup(tty);
tty_ldisc_unlock(tty)
But in above lock, there is a chance when flush_to_ldisc will occur
first and acquired a lock in
tty_ldisc_ref itself.
So this may fail, I am not much sure here, Please correct me, If i am
missing something here.
So can not we simply return from flush_to_ldisc ,when we know
disc_data is not valid like
we are doing for tty and ldisc already?
if (tty->disc_data == NULL) {
tty_ldisc_deref(disc);
return;
}
Regards
Gaurav
-- Qualcomm India Private Limited, on behalf of Qualcomm Innovation
Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation
Collaborative Project.
