Commit b0fed314 authored by Jiri Slaby's avatar Jiri Slaby Committed by Linus Torvalds
Browse files

Char: n_hdlc, allow RESTARTSYS retval of tty write 



Acked-by: default avatarPaul Fulghum <paulkf@microgate.com>
Signed-off-by: default avatarJiri Slaby <jirislaby@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent c2aef333

drivers/char/n_hdlc.c

+6 −1
Original line number Diff line number Diff line
@@ -401,6 +401,11 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty) 
		tty->flags |= (1 << TTY_DO_WRITE_WAKEUP);

		actual = tty->driver->write(tty, tbuf->buf, tbuf->count);



		/* rollback was possible and has been done */

		if (actual == -ERESTARTSYS) {

			n_hdlc->tbuf = tbuf;

			break;

		}

		/* if transmit error, throw frame away by */

		/* pretending it was accepted by driver */

		if (actual < 0)