CABLE_IS_40WIRE(9) libata Core Internals CABLE_IS_40WIRE(9)
NAME
cable_is_40wire - 40/80/SATA decider
SYNOPSIS
int cable_is_40wire(struct ata_port * ap);
ARGUMENTS
ap
port to consider
DESCRIPTION
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.
AUTHOR
Jeff Garzik
Author.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 CABLE_IS_40WIRE(9)
