linux-kernel - Re: Driver_data is probably zero in serverworks IDE driver

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Date:	Sat, 09 Sep 2006 21:36:37 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Marton Balint <cus@...ekas.hu>
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org, torvalds@...l.org
Subject: Re: Driver_data is probably zero in serverworks IDE driver

Ar Sad, 2006-09-09 am 19:19 +0200, ysgrifennodd Marton Balint:
> Please take a look at commit f201f5046ddaeeccb036bdf6848549bf5cb51bb1.
> This commit introduced the usage of the PCI_DEVICE macro, but this macro 
> does not set class and class_mask so I think now we set .class instead of 
> .driver_data. The drivers that are also affected by this commit may 
> have similar problems.

Yes it looks to be the case, and PCI_DEVICE_CLASS() macros don't help as
they assign in differing orders.

The following drivers appear to be broken from this

Aec62xx.c			All	
Serverworks.c			OSB4/CSB5/CSB6/CSB6-2/HT1000

Actual breakage will affect CSB6/CSB6-2/HT1000, and all the AEC6xxx
chips in various ways.

Unfortunately it appears I missed the bug, nobody checked the diff and
nobody ever ran -mm with these chipsets so it somehow got through. I'll
look at rolling a patch but it might be Monday. Until then anyone
rolling a 2.6.18 tree should revert the PCI table changes in serverworks
and aec62xx.

Alan

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