linux-kernel - Re: [PATCH] lpfc: nvmet

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Date:   Sat, 20 May 2017 03:28:47 -0700
From:   Joe Perches <joe@...ches.com>
To:     Arnd Bergmann <arnd@...db.de>,
        James Smart <james.smart@...adcom.com>,
        Dick Kennedy <dick.kennedy@...adcom.com>
Cc:     "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Hannes Reinecke <hare@...e.com>,
        Johannes Thumshirn <jthumshirn@...e.de>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] lpfc: nvmet_fc: fix format string

On Fri, 2017-05-19 at 10:04 +0200, Arnd Bergmann wrote:
> The lpfc_nvmeio_data() tracing helper always takes a format string and
> three additional arguments.

No it doesn't.  It takes a format and arguments.

I don't disagree with the patch, just the characterization
of the lpfc_mvmeio_data call in the commit message.

> The latest caller has a format string with
> only two integer arguments, causing this harmless warning:
> 
> drivers/scsi/lpfc/lpfc_nvmet.c: In function 'lpfc_nvmet_xmt_fcp_release':
> drivers/scsi/lpfc/lpfc_nvmet.c:802:25: error: too many arguments for format [-Werror=format-extra-args]
>   lpfc_nvmeio_data(phba, "NVMET FCP FREE: xri x%x ste %d\n", ctxp->oxid,
> 
> We could add a dummy argument here, but it seems reasonable to print
> the 'abort' flag as the third argument.