Name

sata_phy_debounce — debounce SATA phy status

Synopsis

int sata_phy_debounce (struct ata_port * ap,
 const unsigned long * params);
 

Arguments

ap

ATA port to debounce SATA phy status for

params

timing parameters { interval, duratinon, timeout } in msec

Description

Make sure SStatus of ap 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, after hot unplugging, DET gets stuck at 1 on some controllers, this functions waits until timeout then returns 0 if DET is stable at 1.

LOCKING

Kernel thread context (may sleep)

RETURNS

0 on success, -errno on failure.