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IB/hfi1: Fix MAD port poll for active cables

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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: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Dean Luick 2016-04-14 08:31:48 -07:00 committed by Doug Ledford
parent 015e91fbc9
commit 1cbaa67035
1 changed files with 15 additions and 1 deletions
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16
drivers/staging/rdma/hfi1/mad.c
View file

@ -999,7 +999,21 @@ static int set_port_states(struct hfi1_pportdata *ppd, struct opa_smp *smp,
break;
}
set_link_state(ppd, link_state);
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) ||