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From: Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
To: Sebastian Andrzej Siewior
	<bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
Cc: dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org,
	eric.y.miao-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	David Brownell <david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>,
	sodaville-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org,
	Dirk Brandewie
	<dirk.brandewie-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH 1/9] spi/pxa2xx: register driver properly
Date: Wed, 29 Dec 2010 14:40:55 -0700	[thread overview]
Message-ID: <20101229214054.GB15198@angua.secretlab.ca> (raw)
In-Reply-To: <20101229212635.GA31347-Hfxr4Dq0UpYb1SvskN2V4Q@public.gmane.org>

On Wed, Dec 29, 2010 at 10:26:35PM +0100, Sebastian Andrzej Siewior wrote:
> * David Brownell | 2010-12-29 09:00:36 [-0800]:
> 
> >I detect an effort to change the classic model for board initialization in Linux:  first set up
> >and register all system/platform devices on each
> >board then do the same for their drivers.  ("hardware first" ... "software second".
> 
> What are you suggesting? platform_driver_probe() does not work with
> hotpluged devices.

That assumption only holds for certain devices on certain boards.
platform_device_probe() is a machine specific optimization that I will
not hesitate to remove if it breaks the driver on other machines.

> I don't see a reason why it should be available to drivers. It is
> unlikely that platform devices are hotlpluged but not impossible.

More and more likely all the time though.  Many drivers use the model
of registering child platform_devices (for instance, multi function
devices).

g.


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  parent reply	other threads:[~2010-12-29 21:40 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-02 17:47 SPI support for CE4100, v2 Sebastian Andrzej Siewior
     [not found] ` <1291312057-7933-1-git-send-email-bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-12-02 17:47   ` [PATCH 1/9] spi/pxa2xx: register driver properly Sebastian Andrzej Siewior
     [not found]     ` <1291312057-7933-2-git-send-email-bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-12-29  8:11       ` Grant Likely
2010-12-29 17:00         ` David Brownell
2010-12-29 21:26           ` Sebastian Andrzej Siewior
     [not found]             ` <20101229212635.GA31347-Hfxr4Dq0UpYb1SvskN2V4Q@public.gmane.org>
2010-12-29 21:40               ` Grant Likely [this message]
     [not found]                 ` <20101229214054.GB15198-MrY2KI0G/OVr83L8+7iqerDks+cytr/Z@public.gmane.org>
2010-12-30  1:55                   ` David Brownell
     [not found]           ` <349566.41372.qm-g47maUHHHF+ORdMXk8NaZPu2YVrzzGjVVpNB7YpNyf8@public.gmane.org>
2010-12-29 21:36             ` Grant Likely
2010-12-02 17:47   ` [PATCH 2/9] spi/pxa2xx: add support for shared IRQ handler Sebastian Andrzej Siewior
     [not found]     ` <1291312057-7933-3-git-send-email-bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-12-29  8:11       ` Grant Likely
2010-12-02 17:47   ` [PATCH 3/9] spi/pxa2xx: Use define for SSSR_TFL_MASK instead of plain numbers Sebastian Andrzej Siewior
     [not found]     ` <1291312057-7933-4-git-send-email-bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-12-29  8:11       ` Grant Likely
2010-12-02 17:47   ` [PATCH 4/9] arm/pxa2xx: reorgazine SSP and SPI header files Sebastian Andrzej Siewior
     [not found]     ` <1291312057-7933-5-git-send-email-bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-12-29  8:11       ` Grant Likely
2010-12-02 17:47   ` [PATCH 5/9] spi/pxa2xx: Add CE4100 support Sebastian Andrzej Siewior
     [not found]     ` <1291312057-7933-6-git-send-email-bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-12-29  8:11       ` Grant Likely
2010-12-02 17:47   ` [PATCH 6/9] spi/pxa2xx: Consider CE4100's FIFO depth Sebastian Andrzej Siewior
     [not found]     ` <1291312057-7933-7-git-send-email-bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-12-29  8:11       ` Grant Likely
2010-12-02 17:47   ` [PATCH 7/9] spi/pxa2xx: Add chipselect support for Sodaville Sebastian Andrzej Siewior
     [not found]     ` <1291312057-7933-8-git-send-email-bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-12-29  8:11       ` Grant Likely
2010-12-02 17:47   ` [PATCH 8/9] spi/pxa2xx: Modify RX-Tresh instead of busy-loop for the remaining RX bytes Sebastian Andrzej Siewior
     [not found]     ` <1291312057-7933-9-git-send-email-bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-12-29  8:12       ` Grant Likely
2010-12-02 17:47   ` [PATCH 9/9] spi/pxa2xx: pass of_node to spi device and set a parent device Sebastian Andrzej Siewior
     [not found]     ` <1291312057-7933-10-git-send-email-bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-12-29  8:11       ` Grant Likely
2010-12-09 16:43   ` [sodaville] SPI support for CE4100, v2 Sebastian Andrzej Siewior
     [not found]     ` <4D01074A.2020106-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-12-29  8:10       ` Grant Likely

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