BUG: fb_imageblit called before fb_check_var and fb_set_par function

[Knut Petersen <Knut_Petersen@t-online.de>]

Hi everybody,

under certain circumstances the X trident driver does disable mmio
upon returning to a linux console. As mapped ioports are no longer
available, this is an immediate problem.

I never had expected that upon switching from X to a linux console
drawing functions like fb_imageblit would be called before the
fb_check_var and  fb_set_par functions have been called. But that´s
definitely the case.

Cyblafb now has a workaround for the problem, but I do believe that
this odd behaviour could also be the reason for failure or problems of
some other drivers  that do work fine as long as X is not involved,
but fail or show problems upon switching between the linux console
and X.

Please have a look at the code.

cu,
 Knut


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