Messages in this thread |  | | Date | Wed, 30 Jan 2002 20:58:39 +0100 | | From | David Weinehall <> | | Subject | Re: [PATCH] IBM Lanstreamer bugfixes |
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On Wed, Jan 30, 2002 at 01:27:29PM -0600, Kent E Yoder wrote: > I think the delays in the driver *were* just working around PCI posting > effects. I tested by removing all the delays and instead putting > something like: > writew(val, addr); > (void) read(addr); > > instead, to flush the PCI cache. Things seem to be happy. > > Is this the best way to make sure the PCI cache is flushed for writes that > need to happen immediately? I don't see many other drivers doing it...
Wouldn't creating a flush_and_writew() or similar be an idea here?
/David Weinehall _ _ // David Weinehall <tao@acc.umu.se> /> Northern lights wander \\ // Maintainer of the v2.0 kernel // Dance across the winter sky // \> http://www.acc.umu.se/~tao/ </ Full colour fire </ - 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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