diff options
| author | Tejun Heo <htejun@gmail.com> | 2007-07-16 14:29:40 +0900 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-07-20 08:19:06 -0400 |
| commit | f1545154a5c96590b1992aac8ee1e2c445e301ed (patch) | |
| tree | edd95f465369d8597c40e7fdcc9513dea5fd2712 /drivers/ata | |
| parent | 008a78961ec72990d09d7625ef9499d7317d040d (diff) | |
libata: quickly trigger SATA SPD down after debouncing failed
Debouncing failure is a good indicator of basic link problem. Use
-EPIPE to indicate debouncing failure and make ata_eh_reset() invoke
sata_down_spd_limit() if the error occurs during reset.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/libata-core.c | 6 | ||||
| -rw-r--r-- | drivers/ata/libata-eh.c | 2 |
2 files changed, 5 insertions, 3 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index c325b7a4246..05922e9f4fa 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -3267,9 +3267,11 @@ int sata_phy_debounce(struct ata_port *ap, const unsigned long *params, last = cur; last_jiffies = jiffies; - /* check deadline */ + /* Check deadline. If debouncing failed, return + * -EPIPE to tell upper layer to lower link speed. + */ if (time_after(jiffies, deadline)) - return -EBUSY; + return -EPIPE; } } diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 183eaf466d4..1a4397ae9e4 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -1790,7 +1790,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify, schedule_timeout_uninterruptible(delta); } - if (reset == hardreset && + if (rc == -EPIPE || try == ARRAY_SIZE(ata_eh_reset_timeouts) - 1) sata_down_spd_limit(ap); if (hardreset) |