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SubjectRe: [PATCH] radeonfb: (#2) Implement proper workarounds for PLL accesses
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Benjamin Herrenschmidt <benh@kernel.crashing.org> writes:

> After discussion with ATIs, it seems that the workarounds they initially
> gave me were not completely correct.
>
> This patch implements the proper ones, which includes sleeping in PLL
> accesses, and thus requires the previous patch to make sure we do not
> call unblank at interrupt time (unless oops_in_progress is set, in which
> case I use an mdelay).
>
> It also removes obsolete code that used to disable some power management
> features in the accel init code.

This patch does no good on Radeon M6 (iBook G3). It makes mode switching
to take an extraordinary amount of time, ie. when switching away from X it
takes about 2-3 seconds until the console is restored.

Andreas.

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Andreas Schwab, SuSE Labs, schwab@suse.de
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