linux-kernel - Re: [PATCH v3 2/7] scsi: pm: use autosuspend if device supports it

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Message-ID: <1476441.ovA4GKBza3@linux-lqwf.site>
Date:	Thu, 26 Jul 2012 12:44:24 +0200
From:	Oliver Neukum <oneukum@...e.de>
To:	Aaron Lu <aaron.lu@....com>
Cc:	James Bottomley <James.Bottomley@...senpartnership.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Jeff Garzik <jgarzik@...ox.com>, Lin Ming <minggr@...il.com>,
	Jeff Wu <jeff.wu@....com>, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-scsi@...r.kernel.org,
	linux-ide@...r.kernel.org, Aaron Lu <aaron.lwe@...il.com>
Subject: Re: [PATCH v3 2/7] scsi: pm: use autosuspend if device supports it

On Thursday 26 July 2012 18:05:24 Aaron Lu wrote:
> If the device is using autosuspend, when scsi_autopm_put_device is
> called for it, use autosuspend runtime pm calls instead of the sync
> call.

What is the purpose of this approach?
You need a very good reason to have an API do two different things
based on this.

	Regards
		Oliver

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