Messages in this thread | | | Date | Tue, 18 May 2010 10:45:51 +0200 | From | Andi Kleen <> | Subject | Re: [PATCH] x86: Disable HPET MSI on ATI SB700/SB800 |
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> If one wanted, you could disable HPET MSI on this chipset only when a > driver requests an ISA DMA channel. Then if there's no floppy or other LPC > DMA device present, it can stay enabled. I don't know if it's worth the > trouble, though.
There can be LPC devices which are not visible to the kernel, but only used through ACPI or the BIOS. Think of fancy fan controllers and similar.
-Andi -- ak@linux.intel.com -- Speaking for myself only.
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