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Char: n_hdlc, allow RESTARTSYS retval of tty write

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Acked-by: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jiri Slaby 2007-07-15 23:40:12 -07:00 committed by Linus Torvalds
parent c2aef333c9
commit b0fed3140f
1 changed files with 6 additions and 1 deletions
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7
drivers/char/n_hdlc.c
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@ -400,7 +400,12 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
/* Send the next block of data to device */
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)