linux-kernel - Re: [PATCH] scsi: csiostor: remove redundant assignment to pointer 'ln'

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Message-ID: <20180129151539.GA1752@chelsio.com>
Date:   Mon, 29 Jan 2018 20:45:52 +0530
From:   Varun Prakash <varun@...lsio.com>
To:     Colin King <colin.king@...onical.com>
Cc:     "James E . J . Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: csiostor: remove redundant assignment to pointer
 'ln'

On Wed, Jan 24, 2018 at 02:58:01PM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> The pointer ln is assigned a value that is never read, it is re-assigned
> a new value in the list_for_each loop hence the initialization is
> redundant and can be removed.
> 
> Cleans up clang warning:
> drivers/scsi/csiostor/csio_lnode.c:117:21: warning: Value stored to 'ln'
> during its initialization is never read
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  drivers/scsi/csiostor/csio_lnode.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/scsi/csiostor/csio_lnode.c b/drivers/scsi/csiostor/csio_lnode.c
> index be5ee2d37815..7dbbbb81a1e7 100644
> --- a/drivers/scsi/csiostor/csio_lnode.c
> +++ b/drivers/scsi/csiostor/csio_lnode.c
> @@ -114,7 +114,7 @@ static enum csio_ln_ev fwevt_to_lnevt[] = {
>  static struct csio_lnode *
>  csio_ln_lookup_by_portid(struct csio_hw *hw, uint8_t portid)
>  {
> -	struct csio_lnode *ln = hw->rln;
> +	struct csio_lnode *ln;
>  	struct list_head *tmp;
>  
>  	/* Match siblings lnode with portid */

Acked-by: Varun Prakash <varun@...lsio.com>