linux-kernel - Re: [PATCH] ASoC: core: Fix Sparse incompatible types warning

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Message-ID: <5345279F.6070005@metafoo.de>
Date:	Wed, 09 Apr 2014 12:57:35 +0200
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
CC:	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: core: Fix Sparse incompatible types warning

On 04/09/2014 09:21 AM, Krzysztof Kozlowski wrote:
> Fix following Sparse warning:
> sound/soc/soc-core.c:252:20: error: incompatible types in comparison expression (different type sizes)
>
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> ---
>   sound/soc/soc-core.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
> index 051c006281f5..41f6178249df 100644
> --- a/sound/soc/soc-core.c
> +++ b/sound/soc/soc-core.c
> @@ -249,7 +249,7 @@ static ssize_t codec_reg_write_file(struct file *file,
>   	struct snd_soc_codec *codec = file->private_data;
>   	int ret;
>
> -	buf_size = min(count, (sizeof(buf)-1));
> +	buf_size = min(count, (size_t)(sizeof(buf)-1));

But shouldn't the type of sizeof already be size_t?
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