linux-kernel - [PATCH AUTOSEL 4.19 208/237] scsi: mpt3sas: Don't modify EEDPTagMode field setting on SAS3.5 HBA devices

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Date:   Sat, 16 Nov 2019 10:40:43 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Suganath Prabu <suganath-prabu.subramani@...adcom.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Sasha Levin <sashal@...nel.org>,
        MPT-FusionLinux.pdl@...adcom.com, linux-scsi@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 208/237] scsi: mpt3sas: Don't modify EEDPTagMode field setting on SAS3.5 HBA devices

From: Suganath Prabu <suganath-prabu.subramani@...adcom.com>

[ Upstream commit 6cd1bc7b9b5075d395ba0120923903873fc7ea0e ]

If EEDPTagMode field in manufacturing page11 is set then unset it. This is
needed to fix a hardware bug only in SAS3/SAS2 cards. So, skipping
EEDPTagMode changes in Manufacturing page11 for SAS 3.5 controllers.

Signed-off-by: Suganath Prabu <suganath-prabu.subramani@...adcom.com>
Reviewed-by: Bjorn Helgaas <bhelgaas@...gle.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/scsi/mpt3sas/mpt3sas_base.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index d2ab52026014f..2c556c7fcf0dc 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -4117,7 +4117,7 @@ _base_static_config_pages(struct MPT3SAS_ADAPTER *ioc)
 	 * flag unset in NVDATA.
 	 */
 	mpt3sas_config_get_manufacturing_pg11(ioc, &mpi_reply, &ioc->manu_pg11);
-	if (ioc->manu_pg11.EEDPTagMode == 0) {
+	if (!ioc->is_gen35_ioc && ioc->manu_pg11.EEDPTagMode == 0) {
 		pr_err("%s: overriding NVDATA EEDPTagMode setting\n",
 		    ioc->name);
 		ioc->manu_pg11.EEDPTagMode &= ~0x3;
-- 
2.20.1