linux-kernel - Re: [PATCH] ib_srpt: Remove redundant assignment to ret

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Date:   Thu, 6 May 2021 14:34:26 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Yang Li <yang.lee@...ux.alibaba.com>
Cc:     bvanassche@....org, dledford@...hat.com, jgg@...pe.ca,
        nathan@...nel.org, ndesaulniers@...gle.com,
        linux-rdma@...r.kernel.org, target-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com
Subject: Re: [PATCH] ib_srpt: Remove redundant assignment to ret

On Thu, May 06, 2021 at 06:15:05PM +0800, Yang Li wrote:
> Variable 'ret' is set to -ENOMEM but this value is never read as it is
> overwritten with a new value later on, hence it is a redundant
> assignment and can be removed
> 
> In 'commit b79fafac70fc ("target: make queue_tm_rsp() return void")'
> srpt_queue_response() has been changed to return void, so after "goto
> out", there is no need to return ret.
> 
> Clean up the following clang-analyzer warning:
> 
> drivers/infiniband/ulp/srpt/ib_srpt.c:2860:3: warning: Value stored to
> 'ret' is never read [clang-analyzer-deadcode.DeadStores]
> 
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
> ---
>  drivers/infiniband/ulp/srpt/ib_srpt.c | 1 -
>  1 file changed, 1 deletion(-)
> 

Fixes: b99f8e4d7bcd ("IB/srpt: convert to the generic RDMA READ/WRITE API") 

Thanks,
Reviewed-by: Leon Romanovsky <leonro@...dia.com>