linux-kernel - Re: [PATCH v2] fpga: altera-pr-ip: fix unsigned comparison with less than zero

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Message-ID: <20220608041030.GA407787@yilunxu-OptiPlex-7050>
Date:   Wed, 8 Jun 2022 12:10:30 +0800
From:   Xu Yilun <yilun.xu@...el.com>
To:     Marco Pagani <marpagan@...hat.com>
Cc:     Moritz Fischer <mdf@...nel.org>, Wu Hao <hao.wu@...el.com>,
        Tom Rix <trix@...hat.com>, linux-fpga@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] fpga: altera-pr-ip: fix unsigned comparison with less
 than zero

On Wed, May 25, 2022 at 05:14:52PM +0200, Marco Pagani wrote:
> Fix the "comparison with less than zero" warning reported by
> cppcheck for the unsigned (size_t) parameter count of the
> alt_pr_fpga_write() function.
> 

Please add the 'Fixes' tag, and resend it based on 5.19-rc1

Thanks,
Yilun

> Reviewed-by: Tom Rix <trix@...hat.com>
> Acked-by: Xu Yilun <yilun.xu@...el.com>
> Signed-off-by: Marco Pagani <marpagan@...hat.com>
> ---
> Changes v1 -> v2:
> - Coding style fix
> ---
>  drivers/fpga/altera-pr-ip-core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/fpga/altera-pr-ip-core.c b/drivers/fpga/altera-pr-ip-core.c
> index be0667968d33..df8671af4a92 100644
> --- a/drivers/fpga/altera-pr-ip-core.c
> +++ b/drivers/fpga/altera-pr-ip-core.c
> @@ -108,7 +108,7 @@ static int alt_pr_fpga_write(struct fpga_manager *mgr, const char *buf,
>  	u32 *buffer_32 = (u32 *)buf;
>  	size_t i = 0;
>  
> -	if (count <= 0)
> +	if (!count)
>  		return -EINVAL;
>  
>  	/* Write out the complete 32-bit chunks */
> -- 
> 2.35.3