linux-kernel - Re: [PATCH] scsi: elx: efct: Eliminate unnecessary boolean check in efct_hw_command

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Message-ID: <yq1wnqqy481.fsf@ca-mkp.ca.oracle.com>
Date:   Fri, 18 Jun 2021 22:32:05 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Nathan Chancellor <nathan@...nel.org>
Cc:     James Smart <james.smart@...adcom.com>,
        Ram Vegesna <ram.vegesna@...adcom.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-scsi@...r.kernel.org, target-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com
Subject: Re: [PATCH] scsi: elx: efct: Eliminate unnecessary boolean check in
 efct_hw_command_cancel()


Nathan,

> clang warns:
>
> drivers/scsi/elx/efct/efct_hw.c:1523:17: warning: address of array
> 'ctx->buf' will always evaluate to 'true' [-Wpointer-bool-conversion]
>                               (!ctx->buf ? U32_MAX : *((u32 *)ctx->buf)));
>                                ~~~~~~^~~
>
> buf is an array in the middle of a struct so deferencing it is not a
> problem as long as ctx is not NULL. Eliminate the check, which fixes the
> warning.

Applied to 5.14/scsi-staging, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering