CABLE_IS_40WIRE(9) libata Core Internals CABLE_IS_40WIRE(9)NAMEcable_is_40wire - 40/80/SATA decider
int cable_is_40wire(struct ata_port * ap);
port to consider
This function encapsulates the policy for speed management in one
place. At the moment we don't cache the result but there is a good case
for setting ap->cbl to the result when we are called with unknown
cables (and figuring out if it impacts hotplug at all).
Return 1 if the cable appears to be 40 wire.
COPYRIGHTKernel Hackers Manual 3.8. June 2014 CABLE_IS_40WIRE(9)