> > this will fix crash bug when doing rmmod to the driver, this is because the > > port_stop function get called later and it could access the device's > registers. > > > > Where does the iounmap() now get done instead of that place? > nowhere, the /proc/iomem still shows that sata_mv uses io mempry after the rrmod, but when I re-load the driver, I can see it reuses the same io address range. so it doesn't waste io mem resources.
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