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%3Ba=su...
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 stable@vger.kernel.org know about it.
From foo@baz Mon Dec 18 13:28:59 CET 2017
From: Patel Jay P jay.p.patel@intel.com Date: Mon, 23 Oct 2017 06:05:53 -0700 Subject: Ib/hfi1: Return actual operational VLs in port info query
From: Patel Jay P jay.p.patel@intel.com
[ 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
Reviewed-by: Mike Marciniszyn mike.marciniszyn@intel.com Reviewed-by: Dennis Dalessandro dennis.dalessandro@intel.com Signed-off-by: Patel Jay P jay.p.patel@intel.com Signed-off-by: Dennis Dalessandro dennis.dalessandro@intel.com Signed-off-by: Doug Ledford dledford@redhat.com Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/infiniband/hw/hfi1/chip.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/hw/hfi1/chip.c +++ b/drivers/infiniband/hw/hfi1/chip.c @@ -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 jay.p.patel@intel.com are
queue-4.14/ib-hfi1-return-actual-operational-vls-in-port-info-query.patch