https://bugzilla.kernel.org/show_bug.cgi?id=51881 --- Comment #3 from jack_wang@xxxxxxxxx 2012-12-24 04:53:42 --- Cc the author of the bad commit. Jack [Bug 51881] New: HighPoint RocketRAID 2720 fail to detect some SATA hdd 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@xxxxxxxxxxxxxxx ReportedBy: kou1.ono@xxxxxxxxx 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 <shane.huang@xxxxxxx> 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 <shane.huang@xxxxxxx> Reviewed-by: Aaron Lu <aaron.lwe@xxxxxxxxx> Signed-off-by: Jeff Garzik <jgarzik@xxxxxxxxxx> :040000 040000 9441b703760224de98a80546977129214d9528f8 436fe4f42392a48b4564f09cad69dafbe82be2c1 M drivers :040000 040000 3177c859173da3d15f3c2fb287364f063aa420d9 a39a26dc3f6c0b21433688420a820b121a921cec M include Revert 65fe1f0f66a from 3.7.1, all hdds are detected. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
