From: Tejun Heo <tj@kernel.org>
To: Aaron Lu <aaron.lu@intel.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
linux-pm@vger.kernel.org, Jeff Garzik <jgarzik@pobox.com>,
Alan Stern <stern@rowland.harvard.edu>, Jeff Wu <jeff.wu@amd.com>,
linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org,
linux-acpi@vger.kernel.org
Subject: Re: [PATCH v9 06/10] ata: zpodd: check zero power ready status
Date: Mon, 10 Dec 2012 21:10:27 -0800 [thread overview]
Message-ID: <20121211051027.GB1932@mtj.dyndns.org> (raw)
In-Reply-To: <50C5564F.8030000@intel.com>
Hello, guys.
On Mon, Dec 10, 2012 at 11:26:07AM +0800, Aaron Lu wrote:
> >>> The problem here is there's no easy to reach genhd from libata (or the
> >>> other way around) without going through sr. I think we're gonna have
> >>> to have something in sr one way or the other.
> >>
> >> Can't we do that via an event? It's a bit clunky because we need the
> >> callback in the layer that sees the sdev, which is libata-scsi, we just
> >> need an analogue of ata_scsi_media_change_notify, but ignoring and
> >> allowing polling is essentially event driven as well, so it should all
> >> work. We'll need a listener in genhd, which might be trickier.
I'm not really following what you mean. Can you please elaborate?
One way or the other, doesn't the notification have to bubble up
through SCSI?
> A colleague of mine reminded me that it's impolite to write something
> like this, and here is my apology. I didn't mean to be rude, I'm sorry
> for this if it made you feel uncomfortable.
Oh, no, it's not rude at all. I was just being distracted w/ other
stuff and lazy. Sorry about that.
Thanks.
--
tejun
next prev parent reply other threads:[~2012-12-11 5:10 UTC|newest]
Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-09 6:51 [PATCH v9 00/10] ZPODD Patches Aaron Lu
2012-11-09 6:51 ` [PATCH v9 01/10] scsi: sr: support runtime pm Aaron Lu
2012-11-09 6:51 ` [PATCH v9 02/10] ata: zpodd: Add CONFIG_SATA_ZPODD Aaron Lu
2012-11-09 6:51 ` [PATCH v9 03/10] ata: zpodd: identify and init ZPODD devices Aaron Lu
2012-11-12 18:53 ` Tejun Heo
2012-11-14 1:32 ` Aaron Lu
2012-11-18 14:38 ` Tejun Heo
2012-11-19 2:15 ` Aaron Lu
2012-11-09 6:51 ` [PATCH v9 04/10] libata: acpi: move acpi notification code to zpodd Aaron Lu
2012-11-12 18:55 ` Tejun Heo
2012-11-14 1:36 ` Aaron Lu
2012-11-09 6:51 ` [PATCH v9 05/10] libata: separate ATAPI code Aaron Lu
2012-11-12 18:57 ` Tejun Heo
2012-11-13 12:49 ` Aaron Lu
2012-11-18 15:01 ` Tejun Heo
2012-11-19 2:21 ` Aaron Lu
2012-11-19 14:51 ` Tejun Heo
2012-11-09 6:51 ` [PATCH v9 06/10] ata: zpodd: check zero power ready status Aaron Lu
2012-11-12 19:13 ` Tejun Heo
2012-11-13 13:20 ` Aaron Lu
2012-11-14 2:18 ` Aaron Lu
2012-11-18 15:00 ` Tejun Heo
2012-11-19 3:09 ` Aaron Lu
2012-11-19 14:56 ` Tejun Heo
2012-11-19 15:06 ` James Bottomley
2012-11-26 0:33 ` Rafael J. Wysocki
2012-11-26 0:45 ` Aaron Lu
2012-11-26 5:03 ` James Bottomley
2012-11-26 5:09 ` Aaron Lu
2012-11-26 7:32 ` James Bottomley
2012-11-26 8:27 ` Aaron Lu
2012-11-26 13:17 ` James Bottomley
2012-11-26 16:21 ` Alan Stern
2012-11-26 19:15 ` James Bottomley
2012-11-27 1:41 ` Aaron Lu
2012-11-28 0:51 ` Rafael J. Wysocki
2012-11-28 1:39 ` Tejun Heo
2012-11-28 2:24 ` Aaron Lu
2012-11-28 8:56 ` James Bottomley
2012-12-03 8:13 ` Aaron Lu
2012-12-03 8:25 ` James Bottomley
2012-12-03 8:59 ` Aaron Lu
2012-12-03 16:23 ` Tejun Heo
2012-12-03 18:56 ` Jeff Garzik
2012-12-04 5:04 ` Aaron Lu
2012-12-04 12:11 ` James Bottomley
2012-12-07 6:13 ` Aaron Lu
2012-12-10 3:26 ` Aaron Lu
2012-12-11 5:10 ` Tejun Heo [this message]
2012-12-18 8:30 ` Aaron Lu
2012-12-20 6:07 ` Aaron Lu
2012-12-25 17:17 ` Tejun Heo
2012-12-26 1:42 ` Aaron Lu
2012-12-28 21:16 ` Tejun Heo
2013-01-04 1:04 ` Aaron Lu
2012-11-30 8:55 ` Aaron Lu
2012-11-30 11:15 ` Rafael J. Wysocki
2012-11-20 6:00 ` Aaron Lu
2012-11-20 8:59 ` Aaron Lu
2012-11-26 0:50 ` Rafael J. Wysocki
2012-11-26 0:48 ` Aaron Lu
2012-11-26 1:03 ` Rafael J. Wysocki
2012-11-26 1:05 ` Aaron Lu
2012-11-26 1:11 ` Rafael J. Wysocki
2012-11-26 1:09 ` Aaron Lu
2012-11-26 1:22 ` Rafael J. Wysocki
2012-11-26 1:22 ` Aaron Lu
2012-11-26 1:17 ` Aaron Lu
2012-11-09 6:51 ` [PATCH v9 07/10] block: add a new interface to block events Aaron Lu
2012-11-12 19:14 ` Tejun Heo
2012-11-12 19:18 ` Alan Stern
2012-11-12 19:21 ` Tejun Heo
2012-11-12 19:34 ` Alan Stern
2012-11-18 15:05 ` Tejun Heo
2012-11-18 17:41 ` Alan Stern
2012-11-18 21:56 ` Tejun Heo
2012-11-18 21:58 ` Tejun Heo
2012-11-18 23:28 ` Alan Stern
2012-11-18 23:35 ` Tejun Heo
2012-11-19 2:07 ` Alan Stern
2012-11-19 3:21 ` Aaron Lu
2012-11-19 14:50 ` Tejun Heo
2012-11-09 6:52 ` [PATCH v9 08/10] scsi: sr: support (un)block events Aaron Lu
2012-11-09 6:52 ` [PATCH v9 09/10] ata: zpodd: handle power transition of ODD Aaron Lu
2012-11-09 6:52 ` [PATCH v9 10/10] ata: expose pm qos flags to user space for ata device Aaron Lu
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