kern/122045: [ata][panic] reiniting detached ata channel kills the kernel

[soralx at cydem.org]

> > Synopsis: [ata][panic] reiniting detached ata channel kills the kernel
> > State-Changed-From-To: feedback->open
> > State-Changed-By: vwe
> > State-Changed-When: Sat Mar 29 15:48:13 UTC 2008
> > State-Changed-Why: 
> > feedback received by private mail, not a problem with mounted filesystem
> > system panics without active mounts on the detached drive 
> > (clean umount before detach done).
> 
> ata(4) freed resources and mutexes when you are detaching it. So, you
> should attach it first before reinit, because it is trying  to get access
> to freed resources. Try this patch.

> 	error = ata_reinit(device);
> -	ata_start(device);
>  	break;

this works nicely, thanks!

[root at soralx ~]# atacontrol reinit ata8
atacontrol: ioctl(IOCATAREINIT): Device not configured
Master:      no device present
Slave:       no device present

so it leaves just one question: how to send a STOP command to an ATA device?
(akin to `camcontrol stop`)

> WBR, Andrey V. Elsukov

[SorAlx]  ridin' VS1400