linux-kernel - Re: [PATCH 1/5] arch/um: handle compat

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Message-ID: <20090813050845.GD5031@cr0.nay.redhat.com>
Date:	Thu, 13 Aug 2009 13:08:45 +0800
From:	Amerigo Wang <xiyou.wangcong@...il.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-kernel@...r.kernel.org, Christoph Hellwig <hch@....de>,
	Andi Kleen <andi@...stfloor.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Jeff Dike <jdike@...toit.com>
Subject: Re: [PATCH 1/5] arch/um: handle compat_ioctl in tty line driver

On Thu, Aug 06, 2009 at 03:09:26PM +0200, Arnd Bergmann wrote:
>This pushes the handling of VT specific ioctls down to the
>UML specific drivers so we can remove it from the common
>compat_ioctl.c file.
>
>Cc: Jeff Dike <jdike@...toit.com>
>Signed-off-by: Arnd Bergmann <arnd@...db.de>


Acked-by: WANG Cong <xiyou.wangcong@...il.com>



>---
> arch/um/drivers/line.c          |    6 ++++++
> arch/um/drivers/ssl.c           |    1 +
> arch/um/drivers/stdio_console.c |    1 +
> arch/um/include/shared/line.h   |    2 ++
> 4 files changed, 10 insertions(+), 0 deletions(-)
>
>diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
>index 14a102e..9819a3b 100644
>--- a/arch/um/drivers/line.c
>+++ b/arch/um/drivers/line.c
>@@ -314,6 +314,12 @@ int line_ioctl(struct tty_struct *tty, struct file * file,
> 	return ret;
> }
> 
>+long line_compat_ioctl(struct tty_struct *tty, struct file * file,
>+	       unsigned int cmd, unsigned long arg)
>+{
>+	return line_ioctl(tty, file, cmd, arg);
>+}
>+
> void line_throttle(struct tty_struct *tty)
> {
> 	struct line *line = tty->driver_data;
>diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
>index f1786e6..eccf14a 100644
>--- a/arch/um/drivers/ssl.c
>+++ b/arch/um/drivers/ssl.c
>@@ -137,6 +137,7 @@ static const struct tty_operations ssl_ops = {
> 	.flush_chars 		= line_flush_chars,
> 	.set_termios 		= line_set_termios,
> 	.ioctl 	 		= line_ioctl,
>+	.compat_ioctl 	 	= line_compat_ioctl,
> 	.throttle 		= line_throttle,
> 	.unthrottle 		= line_unthrottle,
> #if 0
>diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c
>index 49266f6..2cb1f04 100644
>--- a/arch/um/drivers/stdio_console.c
>+++ b/arch/um/drivers/stdio_console.c
>@@ -120,6 +120,7 @@ static const struct tty_operations console_ops = {
> 	.flush_chars 		= line_flush_chars,
> 	.set_termios 		= line_set_termios,
> 	.ioctl 	 		= line_ioctl,
>+	.compat_ioctl 	 	= line_compat_ioctl,
> 	.throttle 		= line_throttle,
> 	.unthrottle 		= line_unthrottle,
> };
>diff --git a/arch/um/include/shared/line.h b/arch/um/include/shared/line.h
>index 311a0d3..6ef62e4 100644
>--- a/arch/um/include/shared/line.h
>+++ b/arch/um/include/shared/line.h
>@@ -79,6 +79,8 @@ extern void line_flush_chars(struct tty_struct *tty);
> extern int line_write_room(struct tty_struct *tty);
> extern int line_ioctl(struct tty_struct *tty, struct file * file,
> 		      unsigned int cmd, unsigned long arg);
>+extern long line_compat_ioctl(struct tty_struct *tty, struct file * file,
>+		      unsigned int cmd, unsigned long arg);
> extern void line_throttle(struct tty_struct *tty);
> extern void line_unthrottle(struct tty_struct *tty);
> 
>-- 
>1.6.3.3
>
>--
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