Hello Alan > Less than ideal in some ways because the base may well be remapped by > other hardware or on non x86 devices. No obvious ideas how to fix it > though and PnP kind of implies x86. If I extend the driver to consider other hw than x86 and PnP I will definitely look into this. > > On the bright side you can then make the resource layer do your locking > work for you. We have an IORESOURCE_MUXED flag for these little horrors > so you can request the resource with IORESOURCE_MUXED. If the resource is > busy then you will get a failure back, if it is idle you will get the > resource, if it is busy but held by another driver using IORESOURCE_MUXED > then the request will block until they finish with it. I was not aware of request_mutex, thanks for your help!. I am preparing v2 with no mutex and requtest_mutex_region. Thanks! -- Ricardo Ribalda -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
