linux-kernel - Re: [stable] 2.6.27.58-rc1 build error Re: [PATCH 21/23] hvc_console: Fix race between hvc_close and hvc

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Message-ID: <20110209055224.GF16288@1wt.eu>
Date:	Wed, 9 Feb 2011 06:52:24 +0100
From:	Willy Tarreau <w@....eu>
To:	"Jayson R. King" <dev@...sonking.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Stable team <stable@...nel.org>
Subject: Re: [stable] 2.6.27.58-rc1 build error Re: [PATCH 21/23] hvc_console: Fix race between hvc_close and hvc_remove

On Tue, Feb 08, 2011 at 09:20:42PM -0600, Jayson R. King wrote:
> drivers/char/hvc_console.c: In function 'hvc_open':
> drivers/char/hvc_console.c:315: error: implicit declaration of function 
> 'tty_kref_get'
> drivers/char/hvc_console.c:324: warning: assignment makes pointer from 
> integer without a cast
> drivers/char/hvc_console.c:341: error: implicit declaration of function 
> 'tty_kref_put'
> drivers/char/hvc_console.c: In function 'hvc_poll':
> drivers/char/hvc_console.c:558: warning: assignment makes pointer from 
> integer without a cast
> drivers/char/hvc_console.c: In function 'hvc_remove':
> drivers/char/hvc_console.c:759: warning: assignment makes pointer from 
> integer without a cast
> 
> I don't see a tty_kref_get or tty_kref_put on 2.6.27. Those functions 
> first appeared in 2.6.28.

Oh indeed, and the ->kref struct member did not even exist in 2.6.27.
Let's drop the patch then, we don't want to add the kref everywhere,
it would have to be ported to other users.

Thanks!
Willy

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