[BISECTED] commit 619efb1059 makes the MacBookPro2,2 screen flickerlike its broken or half plugged in

[Justin P. Mattock]

With the current HEAD Im getting screen flickering really bad to point 
where it looks like the screen is damaged and/or half plugged-in etc..

the bisect pointed to here:

commit 619efb105924d8cafa0c1dd9389e9ab506f5425d

doing a git revert 619efb10592
gets the screen working properly again.
I havent looked much through the code to see if I can fix this. for the 
time being I'll revert this on my machine with the current, until later on.

lspci -vv shows my card info(let me know if you need anymore)

01:00.0 VGA compatible controller: ATI Technologies Inc M56P [Radeon 
Mobility X1600] (prog-if 00 [VGA controller])
        Subsystem: Apple Computer Inc. MacBook Pro
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- 
ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- 
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 256 bytes
        Interrupt: pin A routed to IRQ 42
        Region 0: Memory at 40000000 (32-bit, prefetchable) [size=128M]
        Region 1: I/O ports at 3000 [size=256]
        Region 2: Memory at 50300000 (32-bit, non-prefetchable) [size=64K]
        Expansion ROM at 50320000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: radeon
        Kernel modules: radeon


Justin P. Mattock
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