linux-kernel - Re: early platform drivers vs resource lookup by name

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Message-ID: <20090727174852.GA3137@suse.de>
Date:	Mon, 27 Jul 2009 10:48:52 -0700
From:	Greg KH <gregkh@...e.de>
To:	Mike Frysinger <vapier.adi@...il.com>
Cc:	damm@...l.co.jp, linux-kernel@...r.kernel.org
Subject: Re: early platform drivers vs resource lookup by name

On Mon, Jul 27, 2009 at 02:20:06AM -0400, Mike Frysinger wrote:
> ive been toying with the new early platform driver framework and
> noticed a not-so-friendly feature wrt resource handling.  the
> platform_device_add() function will take care of making sure that
> every resource's name field is not NULL:
> int platform_device_add(struct platform_device *pdev)
> {
> ...
>         if (r->name == NULL)
>             r->name = dev_name(&pdev->dev);
> ...
> 
> unfortunately, the early_platform_add_devices() function does not have
> similar code.  this leads to NULL pointer crashes if you attempt to
> use any of the "byname" resource functions (e.g.
> platform_get_resource_byname) and the resources in question arent
> fully named.
> 
> is the simple fix here to add a resource loop to
> early_platform_add_devices() that makes sure all the name fields are
> non-NULL ?

I really do not know, what do you think would resolve this best for you?

thanks,

greg k-h
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