Re: Odd behaviour of device in response to idleimmediate with unload

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Fri, Nov 07, 2008 at 01:08:29PM +0900, Tejun Heo wrote:
> > This suggests to me that hdparm --idle-unload does indeed trigger a phy
> > event, but the interrupt handler clears SError. Issuing the unload
> > command in EH, on the other hand, does not result in a phy event because
> > event notification is disabled. That way, phyrdy and commwake don't get
> > cleared in SError in will indicate a hotplug event next time SError is
> > checked. Does that make sense? If so, what's to be done about it?
> 
> Hmmm... if ALPM is enabled, it could explain all.  Enabling ALPM does
> inhibit event notifications but it doesn't prevent autopsy from
> interpreting SError as if ALPM is not enabled.
> 
> Evgeni, is ALPM enabled?

You mean Aggressive Link Power Management? As patches from here:
http://www.kernel.org/pub/linux/kernel/people/kristen/patches/SATA/alpm/
?
Unless they got merged into 2.6.27 and autoenabled, no, I dont use ALPM :)

Regards
Evgeni
--
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Filesystems]     [Linux SCSI]     [Linux RAID]     [Git]     [Kernel Newbies]     [Linux Newbie]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Samba]     [Device Mapper]

  Powered by Linux