linux-kernel - RE: [PATCH] scsi: qla4xxx: NULL check before some freeing functions is not needed.

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Message-ID: <MW2PR07MB40423AF3041595F2DC4840F2E3AE0@MW2PR07MB4042.namprd07.prod.outlook.com>
Date:   Mon, 3 Dec 2018 05:48:18 +0000
From:   "Rangankar, Manish" <Manish.Rangankar@...ium.com>
To:     Thomas Meyer <thomas@...3r.de>,
        Dept-Eng QLogic Storage Upstream 
        <QLogic-Storage-Upstream@...ium.com>,
        "jejb@...ux.vnet.ibm.com" <jejb@...ux.vnet.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] scsi: qla4xxx: NULL check before some freeing functions
 is not needed.


> -----Original Message-----
> From: Thomas Meyer <thomas@...3r.de>
> Sent: Monday, December 3, 2018 2:22 AM
> To: Dept-Eng QLogic Storage Upstream <QLogic-Storage-
> Upstream@...ium.com>; jejb@...ux.vnet.ibm.com;
> martin.petersen@...cle.com; linux-scsi@...r.kernel.org; linux-
> kernel@...r.kernel.org
> Subject: [PATCH] scsi: qla4xxx: NULL check before some freeing functions is not
> needed.
> 
> External Email
> 
> NULL check before some freeing functions is not needed.
> 
> Signed-off-by: Thomas Meyer <thomas@...3r.de>
> ---
> 
> diff -u -p a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
> --- a/drivers/scsi/qla4xxx/ql4_os.c
> +++ b/drivers/scsi/qla4xxx/ql4_os.c
> @@ -4160,20 +4160,17 @@ static void qla4xxx_mem_free(struct scsi
>         ha->fw_dump_size = 0;
> 
>         /* Free srb pool. */
> -       if (ha->srb_mempool)
> -               mempool_destroy(ha->srb_mempool);
> +       mempool_destroy(ha->srb_mempool);
> 
>         ha->srb_mempool = NULL;
> 
> -       if (ha->chap_dma_pool)
> -               dma_pool_destroy(ha->chap_dma_pool);
> +       dma_pool_destroy(ha->chap_dma_pool);
> 
>         if (ha->chap_list)
>                 vfree(ha->chap_list);
>         ha->chap_list = NULL;
> 
> -       if (ha->fw_ddb_dma_pool)
> -               dma_pool_destroy(ha->fw_ddb_dma_pool);
> +       dma_pool_destroy(ha->fw_ddb_dma_pool);
> 
>         /* release io space registers  */
>         if (is_qla8022(ha)) {

Thanks
Acked-by: Manish Rangankar <Manish.Rangankar@...ium.com>