kern/153205: [ahci] PIONEER DVD-RW: timeout with ahci(4), OK with ata(4) + ATA_CAM

[Alexander Motin]

The following reply was made to PR kern/153205; it has been noted by GNATS.

From: Alexander Motin <mav at FreeBSD.org>
To: bug-followup at FreeBSD.org, lynx.ripe at gmail.com
Cc:  
Subject: Re: kern/153205: [ahci] PIONEER DVD-RW: timeout with ahci(4), OK
 with ata(4) + ATA_CAM
Date: Thu, 28 Apr 2011 21:49:51 +0300

 Hi.
 
 As I can see from dmesg, controller reports that command is completed,
 but driver either haven't received interrupt or mishandled it.
 
 Just an idea, could you try to disable MSI interrupts for the controller
 by setting hint.ahci.0.msi=0 in /boot/loader.conf?
 
 -- 
 Alexander Motin