sata_link_debounce (9) - Linux Manuals
sata_link_debounce: debounce SATA phy status
NAME
sata_link_debounce - debounce SATA phy status
SYNOPSIS
-
int sata_link_debounce(struct ata_link
* link, const unsigned long* params, unsigned longdeadline);
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