linux-kernel - Re: [patch 1/3] ps3: Disk Storage Driver

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Date:	Thu, 19 Jul 2007 14:00:38 +0200
From:	Cornelia Huck <cornelia.huck@...ibm.com>
To:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Andy Whitcroft <apw@...dowen.org>,
	Jens Axboe <axboe@...nel.dk>,
	"James E.J. Bottomley" <James.Bottomley@...elEye.com>,
	linux-scsi@...r.kernel.org,
	Linux Kernel Development <linux-kernel@...r.kernel.org>,
	Linux/PPC Development <linuxppc-dev@...abs.org>,
	Paul Mackerras <paulus@...ba.org>,
	Jens Axboe <jens.axboe@...cle.com>
Subject: Re: [patch 1/3] ps3: Disk Storage Driver

On Thu, 19 Jul 2007 11:36:31 +0200 (CEST),
Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com> wrote:

> We have a probe thread that checks for new storage devices and adds them to the
> bus with ps3_system_bus_device_register(), which calls device_register().
> 
> I guess the actual bus probe() routine gets called through the notifier call
> chain? That's where I got lost...

No, ->probe() is called from device_register() directly. If you just
have one probe thread, you should have enough serialization.

(Unless you're doing something interesting from the bus_notifier, which
is called via the notifier chain before ->probe()...)
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