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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-04-30 00:54:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-30 08:29:45 -0700
commit257afa3cb6beaad60849655cb272d4b9de74cf63 (patch)
tree8c1620cab6a6da7f397b796dc2fc4176dc2d3940
parent4cd55ab1f991e4d4f3551a711f0f87441a57cd1b (diff)
downloadblackbird-op-linux-257afa3cb6beaad60849655cb272d4b9de74cf63.tar.gz
blackbird-op-linux-257afa3cb6beaad60849655cb272d4b9de74cf63.zip
amiserial: Switch put char to return success/fail
Signed-off-by: Alan Cox <alan@redhat.com> Cc: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/char/amiserial.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index a5f3956a5971..37457e5a4f2b 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -832,33 +832,34 @@ static void change_speed(struct async_struct *info,
local_irq_restore(flags);
}
-static void rs_put_char(struct tty_struct *tty, unsigned char ch)
+static int rs_put_char(struct tty_struct *tty, unsigned char ch)
{
struct async_struct *info;
unsigned long flags;
if (!tty)
- return;
+ return 0;
info = tty->driver_data;
if (serial_paranoia_check(info, tty->name, "rs_put_char"))
- return;
+ return 0;
if (!info->xmit.buf)
- return;
+ return 0;
local_irq_save(flags);
if (CIRC_SPACE(info->xmit.head,
info->xmit.tail,
SERIAL_XMIT_SIZE) == 0) {
local_irq_restore(flags);
- return;
+ return 0;
}
info->xmit.buf[info->xmit.head++] = ch;
info->xmit.head &= SERIAL_XMIT_SIZE-1;
local_irq_restore(flags);
+ return 1;
}
static void rs_flush_chars(struct tty_struct *tty)
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