linux-kernel - Re: [PATCH 2/2] scsi: qla2xxx: avoid unused-function warning

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Message-ID: <yq1lgo7voy2.fsf@oracle.com>
Date:   Sat, 01 Jul 2017 17:15:33 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     qla2xxx-upstream@...gic.com,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Quinn Tran <quinn.tran@...ium.com>,
        Himanshu Madhani <himanshu.madhani@...ium.com>,
        Nicholas Bellinger <nab@...ux-iscsi.org>,
        Darren Trapp <darren.trapp@...ium.com>,
        Anil Gurumurthy <anil.gurumurhty@...ium.com>,
        Duane Grigsby <duane.grigsby@...ium.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] scsi: qla2xxx: avoid unused-function warning


Arnd,

> When NVMe support is disabled, we get a couple of harmless warnings:
>
> drivers/scsi/qla2xxx/qla_nvme.c:667:13: error: 'qla_nvme_unregister_remote_port' defined but not used [-Werror=unused-function]
> drivers/scsi/qla2xxx/qla_nvme.c:634:13: error: 'qla_nvme_abort_all' defined but not used [-Werror=unused-function]
> drivers/scsi/qla2xxx/qla_nvme.c:604:12: error: 'qla_nvme_wait_on_rport_del' defined but not used [-Werror=unused-function]
>
> This replaces the preprocessor checks in the code with equivalent
> compiler conditionals, which lets gcc drop the unused functions
> without warning, and is nicer to read.

Applied to 4.13/scsi-queue.

-- 
Martin K. Petersen	Oracle Linux Engineering