linux-kernel - Re: [PATCH] scsi/megaraid_sas: fix a compilation warning

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Date:   Tue, 6 Aug 2019 12:35:45 +0530
From:   Sumit Saxena <sumit.saxena@...adcom.com>
To:     Qian Cai <cai@....pw>
Cc:     "Martin K. Petersen" <martin.petersen@...cle.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Kashyap Desai <kashyap.desai@...adcom.com>,
        Shivasharan Srikanteshwara 
        <shivasharan.srikanteshwara@...adcom.com>,
        "PDL,MEGARAIDLINUX" <megaraidlinux.pdl@...adcom.com>,
        Linux SCSI List <linux-scsi@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] scsi/megaraid_sas: fix a compilation warning

On Fri, Jul 26, 2019 at 7:55 PM Qian Cai <cai@....pw> wrote:
>
> The commit de516379e85f ("scsi: megaraid_sas: changes to function
> prototypes") introduced a comilation warning due to it changed the
> function prototype of read_fw_status_reg() to take an instance pointer
> instead, but forgot to remove an unused variable.
>
> drivers/scsi/megaraid/megaraid_sas_fusion.c: In function
> 'megasas_fusion_update_can_queue':
> drivers/scsi/megaraid/megaraid_sas_fusion.c:326:39: warning: variable
> 'reg_set' set but not used [-Wunused-but-set-variable]
>   struct megasas_register_set __iomem *reg_set;
>                                        ^~~~~~~
> Fixes: de516379e85f ("scsi: megaraid_sas: changes to function prototypes")
> Signed-off-by: Qian Cai <cai@....pw>
Acked-by: Sumit Saxena <sumit.saxena@...adcom.com>
> ---
>  drivers/scsi/megaraid/megaraid_sas_fusion.c | 3 ---
>  1 file changed, 3 deletions(-)
>
> diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
> index a32b3f0fcd15..e8092d59d575 100644
> --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
> +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
> @@ -323,9 +323,6 @@ inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
>  {
>         u16 cur_max_fw_cmds = 0;
>         u16 ldio_threshold = 0;
> -       struct megasas_register_set __iomem *reg_set;
> -
> -       reg_set = instance->reg_set;
>
>         /* ventura FW does not fill outbound_scratch_pad_2 with queue depth */
>         if (instance->adapter_type < VENTURA_SERIES)
> --
> 1.8.3.1
>