linux-kernel - Re: Controlling Driver Load Order

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Message-ID: <AANLkTinhbSuKl3ajWEonsgsa_BVbUDffK7tNAXINUGZN@mail.gmail.com>
Date:	Wed, 26 May 2010 18:33:47 -0700
From:	Robert Emanuele <rob@...nuele.us>
To:	Wolfram Sang <w.sang@...gutronix.de>
Cc:	Linus Walleij <linus.ml.walleij@...il.com>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-kernel@...r.kernel.org
Subject: Re: Controlling Driver Load Order

Maybe I'm not describing this correctly...
In my platform init_machine I had something like this:
{
at91_add_device_i2c(1, my_i2c_devices, ARRAY_SIZE(my_i2c_devices));

add_my_display


On Wed, May 26, 2010 at 4:52 PM, Wolfram Sang <w.sang@...gutronix.de> wrote:
> On Wed, May 26, 2010 at 11:04:01PM +0200, Linus Walleij wrote:
>> 2010/5/26 Robert Emanuele <rob@...nuele.us>:
>>
>> > On my at91sam9g45 platform I need my i2c drivers to load before the
>> > framebuffer driver.  The i2c drivers control a power management IC
>> > which is needed to enable the graphics controller.
>> >
>> > Is there a way to set up that order?
>>
>> The usual trick (which you can find in a lot of other I2C busses) is to use
>> a core_initcall() instead of module_init().
>
> Correct, but it's subsys_initcall().
>
> --
> Pengutronix e.K.                           | Wolfram Sang                |
> Industrial Linux Solutions                 | http://www.pengutronix.de/  |
>
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