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, duration, 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)

RETURN
       0 on success, -errno on failure.

AUTHOR
       Jeff Garzik
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                     SATA_LINK_DEBOUNCE(9)