linux-kernel - Re: [PATCH v2 1/2] fpga: Fix dead store fpga-mgr.c

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Message-ID: <20200619013902.GD3685@epycbox.lan>
Date:   Thu, 18 Jun 2020 18:39:02 -0700
From:   Moritz Fischer <mdf@...nel.org>
To:     trix@...hat.com
Cc:     mdf@...nel.org, linux-fpga@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] fpga: Fix dead store fpga-mgr.c

On Mon, Jun 08, 2020 at 05:54:45AM -0700, trix@...hat.com wrote:
> From: Tom Rix <trix@...hat.com>
> 
> Using clang's scan-build/view this issue was flagged in fpga-mgr.c
> 
>   drivers/fpga/fpga-mgr.c:585:3: warning: Value stored to 'ret' is never read [deadcode.DeadStores]
>                   ret = id;
> 
> Signed-off-by: Tom Rix <trix@...hat.com>
> ---
>  drivers/fpga/fpga-mgr.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
> index e05104f5e40c..f38bab01432e 100644
> --- a/drivers/fpga/fpga-mgr.c
> +++ b/drivers/fpga/fpga-mgr.c
> @@ -581,10 +581,8 @@ struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name,
>  		return NULL;
>  
>  	id = ida_simple_get(&fpga_mgr_ida, 0, 0, GFP_KERNEL);
> -	if (id < 0) {
> -		ret = id;
> +	if (id < 0)
>  		goto error_kfree;
> -	}
>  
>  	mutex_init(&mgr->ref_mutex);
>  
> -- 
> 2.18.2
> 
Applied to for-next,

Thanks!