suse man page for sata_link_debounce

SATA_LINK_DEBOUNCE(9)						  libata Library					     SATA_LINK_DEBOUNCE(9)

NAME
       sata_link_debounce - debounce SATA phy status

SYNOPSIS
       int sata_link_debounce(struct ata_link * link, const unsigned long * params, unsigned long deadline);

ARGUMENTS
       link
	   ATA link to debounce SATA phy status for

       params
	   timing parameters { interval, duratinon, timeout } in msec

       deadline
	   deadline jiffies for the operation

DESCRIPTION
       Make sure SStatus of link reaches stable state, determined by holding the same value where DET is not 1 for duration polled every interval,
       before timeout. Timeout constraints the beginning of the stable state. Because DET gets stuck at 1 on some controllers after hot
       unplugging, this functions waits until timeout then returns 0 if DET is stable at 1.

       timeout is further limited by deadline. The sooner of the two is used.

LOCKING
       Kernel thread context (may sleep)

RETURNS
       0 on success, -errno on failure.

AUTHOR
       Jeff Garzik
	   Author.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010						     SATA_LINK_DEBOUNCE(9)