[PATCH] libata: enforce default EH actions
LLDDs rely on libata that certain EH actions are automatically taken
on some errors. If the port is frozen or one or more qc's have failed
with HSM violation or timeout, softreset is enforced (LLDD can ask for
storonger EH action at will). If any other error condition exists,
libata EH always revalidates.
This behavior existed in earlier revisions of new EH but lost during
development process. This patch restores it.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/scsi/libata-eh.c b/drivers/scsi/libata-eh.c
index 7244caf..750e734 100644
--- a/drivers/scsi/libata-eh.c
+++ b/drivers/scsi/libata-eh.c
@@ -1169,9 +1169,6 @@
/* inherit upper level err_mask */
qc->err_mask |= ehc->i.err_mask;
- if (qc->err_mask & AC_ERR_TIMEOUT)
- action |= ATA_EH_SOFTRESET;
-
/* analyze TF */
action |= ata_eh_analyze_tf(qc, &qc->result_tf);
@@ -1201,9 +1198,14 @@
if (failed_dev)
action |= ata_eh_speed_down(failed_dev, is_io, all_err_mask);
- if (all_err_mask)
+ /* enforce default EH actions */
+ if (ap->flags & ATA_FLAG_FROZEN ||
+ all_err_mask & (AC_ERR_HSM | AC_ERR_TIMEOUT))
+ action |= ATA_EH_SOFTRESET;
+ else if (all_err_mask)
action |= ATA_EH_REVALIDATE;
+ /* record autopsy result */
ehc->i.dev = failed_dev;
ehc->i.action = action;