diff options
| author | Dean Luick <dean.luick@intel.com> | 2016-04-14 15:31:48 (GMT) |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-04-28 20:32:29 (GMT) |
| commit | 1cbaa670355e4a4e339ac97167fb8ecf536045d3 (patch) | |
| tree | 4f0741140e90daff26913fc652073a279555be82 | |
| parent | 015e91fbc9c6ab48596aa38fc0f8c8aab44036f9 (diff) | |
| download | linux-1cbaa670355e4a4e339ac97167fb8ecf536045d3.tar.xz | |
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: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
| -rw-r--r-- | drivers/staging/rdma/hfi1/mad.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/staging/rdma/hfi1/mad.c b/drivers/staging/rdma/hfi1/mad.c index d1e7f4d..ed58cf2 100644 --- a/drivers/staging/rdma/hfi1/mad.c +++ b/drivers/staging/rdma/hfi1/mad.c @@ -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) || |