Patch "Ib/hfi1: Return actual operational VLs in port info query" has been added to the 4.14-stable tree

This is a note to let you know that I've just added the patch titled

Ib/hfi1: Return actual operational VLs in port info query

to the 4.14-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:
ib-hfi1-return-actual-operational-vls-in-port-info-query.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Patel Jay P <[email protected]>
Date: Mon, 23 Oct 2017 06:05:53 -0700
Subject: Ib/hfi1: Return actual operational VLs in port info query

From: Patel Jay P <[email protected]>

[ Upstream commit 00f9203119dd2774564407c7a67b17d81916298b ]

__subn_get_opa_portinfo stores value returned by hfi1_get_ib_cfg() as operational vls. hfi1_get_ib_cfg() returns vls_operational field in hfi1_pportdata. The problem with this is that the value is always equal to vls_supported field in hfi1_pportdata.

The logic to calculate operational_vls is to set value passed by FM (in __subn_set_opa_portinfo routine). If no value is passed then default value is stored in operational_vls.

Field actual_vls_operational is calculated on the basis of buffer control table. Hence, modifying hfi1_get_ib_cfg() to return actual_operational_vls when used with HFI1_IB_CFG_OP_VLS parameter

---
 drivers/infiniband/hw/hfi1/chip.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -9952,7 +9952,7 @@ int hfi1_get_ib_cfg(struct hfi1_pportdat
 		goto unimplemented;
 
 	case HFI1_IB_CFG_OP_VLS:
-		val = ppd->vls_operational;
+		val = ppd->actual_vls_operational;
 		break;
 	case HFI1_IB_CFG_VL_HIGH_CAP: /* VL arb high priority table size */
 		val = VL_ARB_HIGH_PRIO_TABLE_SIZE;

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/ib-hfi1-return-actual-operational-vls-in-port-info-query.patch