linux-kernel - Re: [PATCH] scsi: qla1280: Fix a use of QLA_64BIT

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Date:   Tue, 21 Jan 2020 10:43:06 -0800
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Nathan Chancellor <natechancellor@...il.com>,
        Thomas Bogendoerfer <tbogendoerfer@...e.de>
Cc:     Michael Reed <mdr@....com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH] scsi: qla1280: Fix a use of QLA_64BIT_PTR

On Mon, Jan 20, 2020 at 11:00 AM Nathan Chancellor
<natechancellor@...il.com> wrote:
>
> Clang warns:
>
> ../drivers/scsi/qla1280.c:1702:5: warning: 'QLA_64BIT_PTR' is not
> defined, evaluates to 0 [-Wundef]
> if QLA_64BIT_PTR
>     ^
> 1 warning generated.
>
> The rest of this driver uses #ifdef QLA_64BIT_PTR, do the same thing at
> this site to remove this warning.
>
> Fixes: ba304e5b4498 ("scsi: qla1280: Fix dma firmware download, if dma address is 64bit")

^ The above SHA is valid only in linux-next. Won't it change when
merged into mainline?

> Link: https://github.com/ClangBuiltLinux/linux/issues/843
> Signed-off-by: Nathan Chancellor <natechancellor@...il.com>

Thanks for the patch.
Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>

> ---
>  drivers/scsi/qla1280.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/scsi/qla1280.c b/drivers/scsi/qla1280.c
> index 607cbddcdd14..3337cd341d21 100644
> --- a/drivers/scsi/qla1280.c
> +++ b/drivers/scsi/qla1280.c
> @@ -1699,7 +1699,7 @@ qla1280_load_firmware_pio(struct scsi_qla_host *ha)
>         return err;
>  }
>
> -#if QLA_64BIT_PTR
> +#ifdef QLA_64BIT_PTR

Thomas should test this, as it implies the previous patch was NEVER
using the "true case" values, making it in effect a
no-functional-change (NFC).

>  #define LOAD_CMD       MBC_LOAD_RAM_A64_ROM
>  #define DUMP_CMD       MBC_DUMP_RAM_A64_ROM
>  #define CMD_ARGS       (BIT_7 | BIT_6 | BIT_4 | BIT_3 | BIT_2 | BIT_1 | BIT_0)
> --
-- 
Thanks,
~Nick Desaulniers