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Commit 1cbaa670 authored by Dean Luick's avatar Dean Luick Committed by Doug Ledford
Browse files

IB/hfi1: Fix MAD port poll for active cables 



A MAD directive to start polling must go through the normal
link tuning and start steps in order to correctly handle
active cables.

Reviewed-by: default avatarEaswar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: default avatarDean Luick <dean.luick@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 015e91fb

drivers/staging/rdma/hfi1/mad.c

+15 −1
Original line number Diff line number Diff line
@@ -999,7 +999,21 @@ static int set_port_states(struct hfi1_pportdata *ppd, struct opa_smp *smp, 
			break;

		}



		if ((link_state == HLS_DN_POLL ||

		     link_state == HLS_DN_DOWNDEF)) {

			/*

			 * Going to poll.  No matter what the current state,

			 * always move offline first, then tune and start the

			 * link.  This correctly handles a FM link bounce and

			 * a link enable.  Going offline is a no-op if already

			 * offline.

			 */

			set_link_state(ppd, HLS_DN_OFFLINE);

			tune_serdes(ppd);

			start_link(ppd);

		} else {

			set_link_state(ppd, link_state);

		}

		if (link_state == HLS_DN_DISABLE &&

		    (ppd->offline_disabled_reason >

		     HFI1_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED) ||