On Wed, 7 Sep 2005, Jeff Garzik wrote:
The phy status register must be read twice in order to get the actual link
state.
Can the original poster give an explanation ? I've enjoyed a rather
well functioning 3c59x driver for the past ~6 years without such
double reading. Plus:
- this operation is I/O expensive
- it is performed inside a region protected by a spinlock
- it is performed often, every 60 seconds
Is there some specific hardware that exhibits a problem that is solved
by this double reading ?
--
Bogdan Costescu
IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
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E-mail: [email protected]
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