From: Jeremy Sowden <jeremy@azazel.net>
To: Nishka Dasgupta <nishkadg.linux@gmail.com>
Cc: devel@driverdev.osuosl.org, maxime.ripard@bootlin.com,
gregkh@linuxfoundation.org, paul.kocialkowski@bootlin.com,
wens@csie.org, mchehab@kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-media@vger.kernel.org
Subject: Re: [PATCH v2] staging: media: sunxi: Add bool cast to value
Date: Mon, 22 Jul 2019 12:12:25 +0100 [thread overview]
Message-ID: <20190722111225.GA2695@azazel.net> (raw)
In-Reply-To: <20190722060651.6538-1-nishkadg.linux@gmail.com>
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On 2019-07-22, at 11:36:51 +0530, Nishka Dasgupta wrote:
> Typecast as bool the return value of cedrus_find_format in
> cedrus_check_format as the return value of cedrus_check_format is
> always treated like a boolean value.
>
> Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
> ---
> Changes in v2:
> - Add !! to the returned pointer to ensure that the return value is
> always either true or false, and never a non-zero value other than
> true.
>
> drivers/staging/media/sunxi/cedrus/cedrus_video.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_video.c b/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> index e2b530b1a956..b731745f21f8 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> @@ -86,7 +86,7 @@ static struct cedrus_format *cedrus_find_format(u32 pixelformat, u32 directions,
> static bool cedrus_check_format(u32 pixelformat, u32 directions,
> unsigned int capabilities)
> {
> - return cedrus_find_format(pixelformat, directions, capabilities);
> + return !!(bool)cedrus_find_format(pixelformat, directions, capabilities);
> }
I think the original was fine. The return value of cedrus_find_format
will be automatically converted to bool before being returned from
cedrus_check_format since that is the return-type of the function, and
the result of converting any non-zero value to bool is 1.
> static void cedrus_prepare_format(struct v4l2_pix_format *pix_fmt)
> --
> 2.19.1
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next prev parent reply other threads:[~2019-07-22 11:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-22 6:06 [PATCH v2] staging: media: sunxi: Add bool cast to value Nishka Dasgupta
2019-07-22 11:12 ` Jeremy Sowden [this message]
2019-07-22 12:24 ` Paul Kocialkowski
2019-07-22 13:19 ` Jeremy Sowden
2019-07-22 13:44 ` Nishka Dasgupta
2019-07-22 15:05 ` Paul Kocialkowski
2019-07-22 15:58 ` Sakari Ailus
2019-07-23 7:16 ` Paul Kocialkowski
2019-07-25 11:24 ` Hans Verkuil
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