Messages in this thread |  | | Date | Fri, 21 Sep 2001 20:09:10 +0200 | From | (Gunther Mayer) | Subject | Re: [PATCH] parport_pc.c PnP BIOS sanity check |
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Thomas Hood wrote: > > I'm still wondering why this function in parport_pc.c rejects dma > values of zero. Is DMA0 not usable by the parallel port for some > reason? I should think that if the PnP BIOS returns a dma of zero > then it means that the parallel port is using DMA0. Sorry if I'm > being obtuse. // Thomas Hood
1) I think I saw some BIOS report DMA0 for "none" (could even have been ACPI which is returning PNP formatted legacy resource data).
2) I have never seen DMA0 for parport configured by a BIOS.
3) Try "lssuperio" if you want the real hardware thing.
This qualifies the code as it is as a sanity check. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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