linux-kernel - Re: [PATCH 2/2] sb_edac: Claim a different PCI device

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: <20140908141035.GK22290@redhat.com>
Date:	Mon, 8 Sep 2014 10:10:36 -0400
From:	Aristeu Rozanski <aris@...hat.com>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	Doug Thompson <dougthompson@...ssion.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Borislav Petkov <bp@...en8.de>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, Rui Wang <ruiv.wang@...il.com>
Subject: Re: [PATCH 2/2] sb_edac: Claim a different PCI device

On Thu, Aug 14, 2014 at 02:45:41PM -0700, Andy Lutomirski wrote:
> sb_edac controls a large number of different PCI functions.  Rather
> than registering as a normal PCI driver for all of them, it
> registers for just one so that it gets probed and, at probe time, it
> looks for all the others.
> 
> Coincidentally, the device it registers for also contains the SMBUS
> registers, so the PCI core will refuse to probe both sb_edac and a
> future iMC SMBUS driver.  The drivers don't actually conflict, so
> just change sb_edac's device table to probe a different device.
> 
> An alternative fix would be to merge the two drivers, but sb_edac
> will also refuse to load on non-ECC systems, whereas i2c_imc would
> still be useful without ECC.
> 
> The only user-visible change should be that sb_edac appears to bind
> a different device.
> 
> Cc: Mauro Carvalho Chehab <m.chehab@...sung.com>
> Cc: Rui Wang <ruiv.wang@...il.com>
> Signed-off-by: Andy Lutomirski <luto@...capital.net>
> ---
>  drivers/edac/sb_edac.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
> index a2597e9313c6..e3bc2cced580 100644
> --- a/drivers/edac/sb_edac.c
> +++ b/drivers/edac/sb_edac.c
> @@ -432,7 +432,7 @@ static const struct pci_id_table pci_dev_descr_ibridge_table[] = {
>   *	pci_device_id	table for which devices we are looking for
>   */
>  static const struct pci_device_id sbridge_pci_tbl[] = {
> -	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TA)},
> +	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_HA0)},
>  	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA)},
>  	{0,}			/* 0 terminated list. */
>  };

Acked-by: Aristeu Rozanski <aris@...hat.com>

-- 
Aristeu

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/