linux-kernel - Re: [PATCH] drivers/tty: don't use the byte channel handle as a parameter in ehv

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Message-ID: <20110922230640.GA16981@kroah.com>
Date:	Thu, 22 Sep 2011 16:06:40 -0700
From:	Greg KH <greg@...ah.com>
To:	Timur Tabi <timur@...escale.com>
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	linux-console@...r.kernel.org
Subject: Re: [PATCH] drivers/tty: don't use the byte channel handle as a
 parameter in ehv_bytechan.c

On Tue, Sep 20, 2011 at 01:26:57PM -0500, Timur Tabi wrote:
> The ePAPR hypervisor byte channel console driver only supports one byte
> channel as a console, and the byte channel handle is stored in a global
> variable.  It doesn't make any sense to pass that handle as a parameter
> to the console functions, since these functions already have access to the
> global variable.
> 
> This change also fixes this compilation warning on a 64-bit kernel:
> 
>   CC      drivers/tty/ehv_bytechan.o
> drivers/tty/ehv_bytechan.c: In function 'ehv_bc_console_write':
> drivers/tty/ehv_bytechan.c:289:24: warning: cast from pointer to integer of different size
> drivers/tty/ehv_bytechan.c: In function 'ehv_bc_console_init':
> drivers/tty/ehv_bytechan.c:355:24: warning: cast to pointer from integer of different size
> 
> This warning is because the driver is converting the integer byte channel
> handle to/from the void* 'data' field of struct console.  Rather than fix
> the warning, we just eliminate the code altogether.
> 
> Signed-off-by: Timur Tabi <timur@...escale.com>
> ---
>  drivers/tty/ehv_bytechan.c |    7 ++-----

This patch doesn't apply at all to my tty tree, what was it made
against?

confused,

greg k-h
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