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Date: Wed, 6 Feb 2008 22:07:04 +0100 (CET)
From: Stefan Richter <stefanr@...6.in-berlin.de>
To: linux1394-devel@...ts.sourceforge.net
cc: linux-kernel@...r.kernel.org
Subject: [PATCH 10/9] firewire: fw-sbp2: preemptively block sdev
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@...6.in-berlin.de>
---
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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