[PATCH 10/9] firewire: fw-sbp2: preemptively block sdev

[Stefan Richter]

Since "fw-sbp2: fix I/O errors during reconnect", a Scsi_Host will be
blocked as soon as a command failed due to bus generation change.  Now
we also block it when fw-core signalled a bus reset via sbp2_update.
This will avoid some command failures and retries (but not all because
commands are injected from tasklet context while sbp2_update runs from
workqueue thread context).

Signed-off-by: Stefan Richter <stefanr@xxxxxxxxxxxxxxxxx>
---
 drivers/firewire/fw-sbp2.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux/drivers/firewire/fw-sbp2.c
===================================================================
--- linux.orig/drivers/firewire/fw-sbp2.c
+++ linux/drivers/firewire/fw-sbp2.c
@@ -1135,6 +1135,7 @@ static void sbp2_update(struct fw_unit *
 	 * Iteration over tgt->lu_list is therefore safe here.
 	 */
 	list_for_each_entry(lu, &tgt->lu_list, link) {
+		sbp2_conditionally_block(lu);
 		lu->retries = 0;
 		sbp2_queue_work(lu, 0);
 	}

-- 
Stefan Richter
-=====-==--- --=- --==-
http://arcgraph.de/sr/

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