linux-kernel - Re: [PATCH v2] ahci: disable DEVSLP for Intel Valleyview

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] [day] [month] [year] [list]

Date:	Thu, 24 Apr 2014 10:26:58 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Jacob Pan <jacob.jun.pan@...ux.intel.com>
Cc:	linux-ide@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Alan Cox <alan@...ux.intel.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Kristen Carlson Accardi <kristen.c.accardi@...el.com>
Subject: Re: [PATCH v2] ahci: disable DEVSLP for Intel Valleyview

On Tue, Apr 15, 2014 at 10:27:11PM -0700, Jacob Pan wrote:
> On Intel Valleyview SoC, SATA device sleep is not reliable. When
> DEVSLP is attempted on certain SSDs, port_devslp write would fail
> and result in malfunction of AHCI controller. AHCI controller may
> be not shown in PCI enumeration after reset. Complete power source
> removal may be required to recover from this failure. So we blacklist
> this device and override host device reported capabilities such that
> device LPM will only attempt slumber but not DEVSLP.
> 
> Signed-off-by: Jacob Pan <jacob.jun.pan@...ux.intel.com>
> Acked-by: Dan Williams <dan.j.williams@...el.com>

Applied to libata/for-3.15-fixes.

Thanks.

-- 
tejun
--
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/