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To: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Greg KH <greg@kroah.com>, Miles Bader <miles@gnu.org>,
       "J.E.J. Bottomley" <James.Bottomley@steeleye.com>,
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       parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] Untested port of parisc_device to generic device interface
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Reply-to: mzyngier@freesurf.fr
From: Marc Zyngier <mzyngier@freesurf.fr>
Date: 13 Nov 2002 13:36:14 +0100
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>>>>> "Ivan" == Ivan Kokshaysky <ink@jurassic.park.msu.ru> writes:

Ivan> It seems that two things are fundamentally missing in generic
Ivan> device model:
Ivan> 1. clean way to detect the type of container structure from arbitrary
Ivan>    struct device *;

Indeed.

I'm using the following stuff in some EISA drivers :

#ifdef CONFIG_EISA
#define DEVICE_EISA(dev) (((dev)->bus == &eisa_bus_type) ? to_eisa_device((dev)) : NULL)
#else
#define DEVICE_EISA(dev) NULL
#endif

and frankly, it's really awful. On drivers which are both EISA and
PCI (3c59x, aic7xxx), this is a major pain.

        M.
-- 
Places change, faces change. Life is so very strange.
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