centos man page for sata_set_spd

SATA_SET_SPD(9) 						  libata Library						   SATA_SET_SPD(9)

NAME
       sata_set_spd - set SATA spd according to spd limit

SYNOPSIS
       int sata_set_spd(struct ata_link * link);

ARGUMENTS
       link
	   Link to set SATA spd for

DESCRIPTION
       Set SATA spd of link according to sata_spd_limit.

LOCKING
       Inherited from caller.

RETURNS
       0 if spd doesn't need to be changed, 1 if spd has been changed. Negative errno if SCR registers are inaccessible.

AUTHOR
       Jeff Garzik
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							   SATA_SET_SPD(9)