linux-kernel - Re: [PATCH] zorro: BKL removal

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Message-ID: <20100605194149.GC5368@nowhere>
Date:	Sat, 5 Jun 2010 21:41:50 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Linux/m68k <linux-m68k@...ts.linux-m68k.org>,
	Arnd Bergmann <arnd@...db.de>,
	Linux Kernel Development <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] zorro: BKL removal

On Sat, Jun 05, 2010 at 09:23:01PM +0200, Geert Uytterhoeven wrote:
> Remove BKL use from proc_bus_zorro_lseek(), like was done for
> proc_bus_pci_lseek() a long time ago.
> 
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> ---


Cool.

I suspect you'll queue it in your tree? Or should I?

Thanks.



>  drivers/zorro/proc.c |   15 ++++++++-------
>  1 files changed, 8 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/zorro/proc.c b/drivers/zorro/proc.c
> index 3c7046d..4f4ea88 100644
> --- a/drivers/zorro/proc.c
> +++ b/drivers/zorro/proc.c
> @@ -22,8 +22,9 @@ static loff_t
>  proc_bus_zorro_lseek(struct file *file, loff_t off, int whence)
>  {
>  	loff_t new = -1;
> +	struct inode *inode = file->f_path.dentry->d_inode;
>  
> -	lock_kernel();
> +	mutex_lock(&inode->i_mutex);
>  	switch (whence) {
>  	case 0:
>  		new = off;
> @@ -35,12 +36,12 @@ proc_bus_zorro_lseek(struct file *file, loff_t off, int whence)
>  		new = sizeof(struct ConfigDev) + off;
>  		break;
>  	}
> -	if (new < 0 || new > sizeof(struct ConfigDev)) {
> -		unlock_kernel();
> -		return -EINVAL;
> -	}
> -	unlock_kernel();
> -	return (file->f_pos = new);
> +	if (new < 0 || new > sizeof(struct ConfigDev))
> +		new = -EINVAL;
> +	else
> +		file->f_pos = new;
> +	mutex_unlock(&inode->i_mutex);
> +	return new;
>  }
>  
>  static ssize_t
> -- 
> 1.7.0.4
> 
> Gr{oetje,eeting}s,
> 
> 						Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> 							    -- Linus Torvalds
> --
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