[SCSI] aacraid: adjustable timeouts

Received From Mark Salyzyn

Add the ability to adjust for unusual corner case failures. Both of
these additional module parameters deal with embedded, non-intel or
complicated system scenarios.

Aif_timeout can be increased past the default 2 minute timeout to drop
application registrations when a system has an unusually high event load
resulting from continuing management requests, or simultaneous builds,
or sluggish user space as a result of system load.

Startup_timeout can be increased past the default 3 minute timeout to
drop an adapter initialization for systems that have a very large number
of targets, or slow to spin-up targets, or a complicated set of array
configurations that extend the time for the firmware to declare that it
is operational. This timeout would only have an affect on non-intel
based systems, as the (more patient) BIOS would generally be where the
startup delay would be dealt with.

Signed-off-by: Mark Haverkamp <markh@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index 9f9f4aae23c..1c83af3d0f3 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -1214,7 +1214,7 @@ int aac_command_thread(void *data)
                                                  * since the last read off
                                                  * the queue?
                                                  */
-                                                if ((time_now - time_last) > 120) {
+                                                if ((time_now - time_last) > aif_timeout) {
                                                         entry = entry->next;
                                                         aac_close_fib_context(dev, fibctx);
                                                         continue;