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Message-ID: <20080413180957.1100a711@core>
Date: Sun, 13 Apr 2008 18:09:57 +0100
From: Alan Cox <alan@...rguk.ukuu.org.uk>
To: akpm@...l.org, linux-kernel@...r.kernel.org,
linux-m68k@...r.kernel.org
Subject: [PATCH] amiserial: Switch put char to return success/fail
Signed-off-by: Alan Cox <alan@...hat.com>
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.25-rc8-mm2/drivers/char/amiserial.c linux-2.6.25-rc8-mm2/drivers/char/amiserial.c
--- linux.vanilla-2.6.25-rc8-mm2/drivers/char/amiserial.c 2008-04-13 15:36:53.000000000 +0100
+++ linux-2.6.25-rc8-mm2/drivers/char/amiserial.c 2008-04-13 15:50:20.000000000 +0100
@@ -832,33 +832,34 @@
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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