From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 51881] New: HighPoint RocketRAID 2720 fail to detect some SATA
hdd
Date: Fri, 21 Dec 2012 14:28:20 +0000 (UTC)
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https://bugzilla.kernel.org/show_bug.cgi?id=51881
Summary: HighPoint RocketRAID 2720 fail to detect some SATA hdd
Product: IO/Storage
Version: 2.5
Kernel Version: 3.7
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: SCSI
AssignedTo: linux-scsi@vger.kernel.org
ReportedBy: kou1.ono@gmail.com
Regression: Yes
After upgrading from 3.6.9 to 3.7, HighPoint RocketRAID 2720 (mvsas) failed to
detect some hdd.
7 SATA hdds are connected, but only 2 or 3 hdds are detected.
I bisected and found bad commit:
65fe1f0f66a57380229a4ced844188103135f37b is the first bad commit
commit 65fe1f0f66a57380229a4ced844188103135f37b
Author: Shane Huang
Date: Fri Sep 7 22:40:01 2012 +0800
ahci: implement aggressive SATA device sleep support
Device Sleep is a feature as described in AHCI 1.3.1 Technical Proposal.
This feature enables an HBA and SATA storage device to enter the DevSleep
interface state, enabling lower power SATA-based systems.
Aggressive Device Sleep enables the HBA to assert the DEVSLP signal as
soon as there are no commands outstanding to the device and the port
specific Device Sleep idle timer has expired. This enables autonomous
entry into the DevSleep interface state without waiting for software
in power sensitive systems.
This patch enables Aggressive Device Sleep only if both host controller
and device support it.
Tested on AMD reference board together with Device Sleep supported device
sample.
Signed-off-by: Shane Huang
Reviewed-by: Aaron Lu
Signed-off-by: Jeff Garzik
:040000 040000 9441b703760224de98a80546977129214d9528f8
436fe4f42392a48b4564f09cad69dafbe82be2c1 M drivers
:040000 040000 3177c859173da3d15f3c2fb287364f063aa420d9
a39a26dc3f6c0b21433688420a820b121a921cec M include
Revert 65fe1f0f66a from 3.7.1, all hdds are detected.
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