[lkml]   [2001]   [Sep]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] parport_pc.c PnP BIOS sanity check
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

I think I saw some BIOS report DMA0 for "none" (could even have
been ACPI which is returning PNP formatted legacy resource data).

I have never seen DMA0 for parport configured by a BIOS.

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
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:03    [W:0.068 / U:2.260 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site