linux-kernel - Re: [PATCH 01/10] ide: add flags query macros

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Date:	Sun, 15 Feb 2009 14:35:12 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Borislav Petkov <petkovbb@...glemail.com>
Cc:	bzolnier@...il.com, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org, Borislav Petkov <petkovbb@...il.com>
Subject: Re: [PATCH 01/10] ide: add flags query macros

On Sun, Feb 15, 2009 at 01:08:03PM +0100, Borislav Petkov wrote:
> There should be no functionality change resulting from this patch.
> 
> Signed-off-by: Borislav Petkov <petkovbb@...il.com>
> ---
>  include/linux/ide.h |  166 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 files changed, 166 insertions(+), 0 deletions(-)
> 
> diff --git a/include/linux/ide.h b/include/linux/ide.h
> index c75631c..f133062 100644
> --- a/include/linux/ide.h
> +++ b/include/linux/ide.h
> @@ -497,6 +497,82 @@ enum {
>  	IDE_AFLAG_NO_AUTOCLOSE		= (1 << 24),
>  };
>  
> +#define ide_drv_drq_int(drive) \
> +	((drive)->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT)

Why not use a static inline here so we get proper typecheck.
And then convert the return result to a bool (0/1) so you
do not have to do this at the call site.

I counted at least three places in ide-cd that does a local
transformation to a bool and I saw nowhere the actual bit value
was used.

	Sam
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