* [PATCH 1/1] Char: n_hdlc, allow RESTARTSYS retval of tty write
@ 2007-05-24 12:28 Jiri Slaby
2007-05-24 15:10 ` Paul Fulghum
0 siblings, 1 reply; 2+ messages in thread
From: Jiri Slaby @ 2007-05-24 12:28 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-kernel, Paul Fulghum
n_hdlc, allow RESTARTSYS retval of tty write
Cc: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
---
commit 119ce83eb190c70d50ed7558c7b67b400ea00ec7
tree d334650d032ded74085a6951c0a1d3e3268fb7db
parent 221eebee5eedfa7c2463dcbfb545b92595512310
author Jiri Slaby <jirislaby@gmail.com> Wed, 23 May 2007 17:55:46 +0200
committer Jiri Slaby <jirislaby@gmail.com> Wed, 23 May 2007 17:55:46 +0200
drivers/char/n_hdlc.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/drivers/char/n_hdlc.c b/drivers/char/n_hdlc.c
index 37f7d34..e8332f3 100644
--- a/drivers/char/n_hdlc.c
+++ b/drivers/char/n_hdlc.c
@@ -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)
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