netdev - RE: [PATCH] net: enetc: Use pci_release_region() to release some resources

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <AM9PR04MB8397145BCF0042D9148417E196D89@AM9PR04MB8397.eurprd04.prod.outlook.com>
Date:   Fri, 27 May 2022 17:51:08 +0000
From:   Claudiu Manoil <claudiu.manoil@....com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH] net: enetc: Use pci_release_region() to release some
 resources

> -----Original Message-----
> From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> Sent: Friday, May 27, 2022 12:26 PM
[...]
> Subject: [PATCH] net: enetc: Use pci_release_region() to release some
> resources
> 
> Some resources are allocated using pci_request_region().
> It is more straightforward to release them with pci_release_region().
> 
> Fixes: 231ece36f50d ("enetc: Add mdio bus driver for the PCIe MDIO
> endpoint")
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
> This patch is speculative, mainly based on the inconsistency between some
> function's names.
> Using pci_request_mem_regions() would also have things look consistent.
> 
> Review with care.
> ---

Since the external MDIO registers are located in BAR 0 of the PCIe endpoint device,
the driver requests specifically the BAR 0 mem region and should release the same
region. So the fix is valid. Thanks.

Reviewed-by: Claudiu Manoil <claudiu.manoil@....com>