| 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¶
| May 2024 | Kernel Hackers Manual 2.6. |