> On analysis, I found that this is due to the change introduced in
> tty_ioctl.c where the termios mutex is taken to protect against
> parallel throttle/unthrottle. Probably IrCOMM stack code wasn't
> tested before merging this patch.
>
> Please suggest what should be done with the IrCOMM protocol stack
> code to resolve this problem?
It looks like the comments are wrong
/*
* Just give it over to the line discipline. There is no need to
* involve the flip buffers, since we are not running in an
interrupt
* handler
*/
appears to be completely untrue
I suspect it just needs to use the tty_flip_buffer functions properly
instead of trying to do clever shortcuts
tty_insert_flip_string(self->tty, skb->data, skb->len);
tty_flip_buffer_push(self->tty);
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