Jan Beulich wrote: >> Do you have any real case where the above behavior causes problem? > > It's not strictly a problem (i.e. nothing really mis-behaves), but it made > me wonder why the box I saw this on gets 6 ahci device instances set > up when spec as well as port map say there ought to be only 5. After > looking at the ESB2 spec it seemed that behavior was clearly violating > the spec: "For ports that are not available, software must not read or > write to registers within that port.", which contradicts status being > displayed for (and therefore status being read) from the 6th (not > present) port. Well, two values don't agree with each other and we know for a fact that vendors sometimes get PI wrong, so we trust n_ports in such cases. We can reverse the behavior but that's likely to cause more problems than it fixes. -- tejun - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
