Nvidiafb broken in 2.6.21-rc1

[Andreas Schwab]

With 2.6.21-rc1 I get no video signal from nvidiafb on PowerMac G5.
Bisection has identified this patch:

commit 599a52d12629394236d785615808845823875868
Author: Richard Purdie <rpurdie at rpsys.net>
Date:   Sat Feb 10 23:07:48 2007 +0000

    backlight: Separate backlight properties from backlight ops pointers
    
    Per device data such as brightness belongs to the indivdual device
    and should therefore be separate from the the backlight operation
    function pointers. This patch splits the two types of data and
    allows simplifcation of some code.
    
    Signed-off-by: Richard Purdie <rpurdie at rpsys.net>

Andreas.

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Andreas Schwab, SuSE Labs, schwab at suse.de
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