From f1545154a5c96590b1992aac8ee1e2c445e301ed Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 16 Jul 2007 14:29:40 +0900 Subject: 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 Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/ata/libata-core.c') 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; } } -- cgit v1.2.3