From: "Hemmann, Volker Armin" <volker.hemmann@heim9.tu-clausthal.de>
To: linux-kernel@vger.kernel.org
Subject: AGP problem SiS 746FX Linux 2.6.5-rc3
Date: Thu, 1 Apr 2004 19:00:47 +0200
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Hi,

in 2.6.5-rc3 was incorporated a fix for SiS648 chipsets that need a little 
time to get into a sane state again, after switching to AGP 8x.
The 746FX has the same timing problem and needs this 'pause', too.
Unfortunatly in sis-apg.c this fix is only checked against the 648, not the 
746, so the fix never gets invoked:

    		if(device->device == PCI_DEVICE_ID_SI_648) {
			// weird: on 648 and 648fx chipsets any rate change in the target command 
register
			// triggers a 5ms screwup during which the master cannot be configured
			printk(KERN_INFO PFX "sis 648 agp fix - giving bridge time to recover\n");
			set_current_state(TASK_UNINTERRUPTIBLE);
			schedule_timeout (1+(HZ*10)/1000);


Gl?ck Auf,
Volker


-- 
Conclusions 
 In a straight-up fight, the Empire squashes the Federation like a bug. Even 
with its numerical advantage removed, the Empire would still squash the 
Federation like a bug. Accept it. -Michael Wong 
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