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authorJeff Skirvin <jeffrey.d.skirvin@intel.com>2012-03-08 22:42:07 -0800
committerDan Williams <dan.j.williams@intel.com>2012-05-17 14:33:42 -0700
commitc5457a82a404db3c447df22e6425c5c140c4bee1 (patch)
treea98780529a483b511af46b85c021b27f26d06e2f /drivers/scsi/isci
parent8c731888bf1be8d15d587ab1b4da80553302e653 (diff)
downloadlinux-linaro-stable-c5457a82a404db3c447df22e6425c5c140c4bee1.tar.gz
isci: Change the phy control and link reset interface for HW reasons.
There is an apparent HW lockup caused when the PE is disabled while there is an outstanding TC in progress. This change puts the link into OOB to force the TC to end before the PE is disabled. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/scsi/isci')
-rw-r--r--drivers/scsi/isci/phy.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c
index 85b26ac9074c..18f43d4c30ba 100644
--- a/drivers/scsi/isci/phy.c
+++ b/drivers/scsi/isci/phy.c
@@ -1442,12 +1442,14 @@ int isci_phy_control(struct asd_sas_phy *sas_phy,
switch (func) {
case PHY_FUNC_DISABLE:
spin_lock_irqsave(&ihost->scic_lock, flags);
+ scu_link_layer_start_oob(iphy);
sci_phy_stop(iphy);
spin_unlock_irqrestore(&ihost->scic_lock, flags);
break;
case PHY_FUNC_LINK_RESET:
spin_lock_irqsave(&ihost->scic_lock, flags);
+ scu_link_layer_start_oob(iphy);
sci_phy_stop(iphy);
sci_phy_start(iphy);
spin_unlock_irqrestore(&ihost->scic_lock, flags);