diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2011-05-24 15:32:20 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2011-05-24 15:32:20 +0900 |
| commit | 9fb4c7fbbcb1e947567d13b82e429ae47a46e337 (patch) | |
| tree | 6c5f11f347d0f58565381f92680a7a9cc63c0bd8 /drivers/input/serio/serport.c | |
| parent | dc3e5b6a6e842116ec2436161adf31877f09b6b9 (diff) | |
| parent | d762f4383100c2a87b1a3f2d678cd3b5425655b4 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'drivers/input/serio/serport.c')
| -rw-r--r-- | drivers/input/serio/serport.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/input/serio/serport.c b/drivers/input/serio/serport.c index 8755f5f3ad3..f3698967edf 100644 --- a/drivers/input/serio/serport.c +++ b/drivers/input/serio/serport.c @@ -120,17 +120,21 @@ static void serport_ldisc_close(struct tty_struct *tty) * 'interrupt' routine. */ -static void serport_ldisc_receive(struct tty_struct *tty, const unsigned char *cp, char *fp, int count) +static unsigned int serport_ldisc_receive(struct tty_struct *tty, + const unsigned char *cp, char *fp, int count) { struct serport *serport = (struct serport*) tty->disc_data; unsigned long flags; unsigned int ch_flags; + int ret = 0; int i; spin_lock_irqsave(&serport->lock, flags); - if (!test_bit(SERPORT_ACTIVE, &serport->flags)) + if (!test_bit(SERPORT_ACTIVE, &serport->flags)) { + ret = -EINVAL; goto out; + } for (i = 0; i < count; i++) { switch (fp[i]) { @@ -152,6 +156,8 @@ static void serport_ldisc_receive(struct tty_struct *tty, const unsigned char *c out: spin_unlock_irqrestore(&serport->lock, flags); + + return ret == 0 ? count : ret; } /* |