This is a note to let you know that I've just added the patch titled
SCSI: libsas: fix sas_find_bcast_phy() in the presence of 'vacant' phys
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-libsas-fix-sas_find_bcast_phy-in-the-presence-of-vacant-phys.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 1699490db339e2c6b3037ea8e7dcd6b2755b688e Mon Sep 17 00:00:00 2001
From: Thomas Jackson <[email protected]>
Date: Fri, 17 Feb 2012 18:33:10 -0800
Subject: SCSI: libsas: fix sas_find_bcast_phy() in the presence of 'vacant' phys
From: Thomas Jackson <[email protected]>
commit 1699490db339e2c6b3037ea8e7dcd6b2755b688e upstream.
If an expander reports 'PHY VACANT' for a phy index prior to the one
that generated a BCN libsas fails rediscovery. Since a vacant phy is
defined as a valid phy index that will never have an attached device
just continue the search.
Signed-off-by: Thomas Jackson <[email protected]>
Signed-off-by: Dan Williams <[email protected]>
Signed-off-by: James Bottomley <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/scsi/libsas/sas_expander.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -1632,9 +1632,17 @@ static int sas_find_bcast_phy(struct dom
int phy_change_count = 0;
res = sas_get_phy_change_count(dev, i, &phy_change_count);
- if (res)
- goto out;
- else if (phy_change_count != ex->ex_phy[i].phy_change_count) {
+ switch (res) {
+ case SMP_RESP_PHY_VACANT:
+ case SMP_RESP_NO_PHY:
+ continue;
+ case SMP_RESP_FUNC_ACC:
+ break;
+ default:
+ return res;
+ }
+
+ if (phy_change_count != ex->ex_phy[i].phy_change_count) {
if (update)
ex->ex_phy[i].phy_change_count =
phy_change_count;
@@ -1642,8 +1650,7 @@ static int sas_find_bcast_phy(struct dom
return 0;
}
}
-out:
- return res;
+ return 0;
}
static int sas_get_ex_change_count(struct domain_device *dev, int *ecc)
Patches currently in stable-queue which might be from
[email protected] are
queue-3.0/scsi-libsas-fix-sas_find_bcast_phy-in-the-presence-of-vacant-phys.patch
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