[PATCH 02/13] libata: add new EH operations

[Tejun Heo <htejun@gmail.com>]

This patch adds three operations for new EH.  The operations are...

->freeze		freeze the port
->error_handler		new EH
->post_internal_cmd	EH/clean up for internal commands

The old and new EH's have to live together for the time being and
->error_handler will be used as a switch to select which EH mechanism
to use.

Signed-off-by: Tejun Heo <htejun@gmail.com>

---

 include/linux/libata.h |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

9ee247ea9ddf4f1d0f5d7d2e457c8b4edd9c54f6
diff --git a/include/linux/libata.h b/include/linux/libata.h
index cc57c4d..0858788 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -463,7 +463,14 @@ struct ata_port_operations {
 	void (*qc_prep) (struct ata_queued_cmd *qc);
 	unsigned int (*qc_issue) (struct ata_queued_cmd *qc);
 
-	void (*eng_timeout) (struct ata_port *ap);
+	/* Error handlers.  ->error_handler overrides ->eng_timeout and
+	 * indicates that new-style EH is in place.
+	 */
+	void (*eng_timeout) (struct ata_port *ap); /* obsolete */
+
+	void (*freeze) (struct ata_port *ap);
+	void (*error_handler) (struct ata_port *ap);
+	void (*post_internal_cmd) (struct ata_queued_cmd *qc);
 
 	irqreturn_t (*irq_handler)(int, void *, struct pt_regs *);
 	void (*irq_clear) (struct ata_port *);
-- 
1.2.4