linux-kernel - Re: [PATCH] scsi: pm8001: avoid -Wrestrict warning

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Date:   Mon, 29 Mar 2021 23:54:31 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Arnd Bergmann <arnd@...nel.org>,
        Jack Wang <jinpu.wang@...ud.ionos.com>
Cc:     "Martin K . Petersen" <martin.petersen@...cle.com>,
        Joe Perches <joe@...ches.com>,
        Viswas G <Viswas.G@...rochip.com>,
        Lee Jones <lee.jones@...aro.org>,
        Vaibhav Gupta <vaibhavgupta40@...il.com>,
        linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
        linux-scsi@...r.kernel.org,
        Ruksar Devadi <Ruksar.devadi@...rochip.com>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: Re: [PATCH] scsi: pm8001: avoid -Wrestrict warning

On Tue, 23 Mar 2021 13:54:23 +0100, Arnd Bergmann wrote:

> On some configurations, gcc warns about overlapping source and
> destination arguments to snprintf:
> 
> drivers/scsi/pm8001/pm8001_init.c: In function 'pm8001_request_msix':
> drivers/scsi/pm8001/pm8001_init.c:977:3: error: 'snprintf' argument 4 may overlap destination object 'pm8001_ha' [-Werror=restrict]
>   977 |   snprintf(drvname, len, "%s-%d", pm8001_ha->name, i);
>       |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> drivers/scsi/pm8001/pm8001_init.c:962:56: note: destination object referenced by 'restrict'-qualified argument 1 was declared here
>   962 | static u32 pm8001_request_msix(struct pm8001_hba_info *pm8001_ha)
>       |                                ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
> 
> [...]

Applied to 5.13/scsi-queue, thanks!

[1/1] scsi: pm8001: avoid -Wrestrict warning
      https://git.kernel.org/mkp/scsi/c/c2255ece2be2

-- 
Martin K. Petersen	Oracle Linux Engineering