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.
AUTHOR
Jeff Garzik
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Author.