diff options
| author | Easwar Hariharan <easwar.hariharan@intel.com> | 2015-10-26 14:28:36 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-27 08:19:22 (GMT) |
| commit | febffe2c2846305c4c810b2900e70753180f9cda (patch) | |
| tree | 62b65d20d5e2bbe5c7a6dfc8204c57279353587b /drivers/staging/rdma/hfi1 | |
| parent | b421922e66db43ffccb28a7df7c44263a917ba63 (diff) | |
| download | linux-febffe2c2846305c4c810b2900e70753180f9cda.tar.xz | |
staging/rdma/hfi1: Fix port bounce issues with 0.22 DC firmware
The DC firmware overwrites the enable_lane_tx register and does not update it
on a host request to go to Poll. This causes an infinite loop through the LNI
state machine if a link width downgrade occurs. This patch re-sets the
enable_lane_tx register to all 4 lanes.
Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/rdma/hfi1')
| -rw-r--r-- | drivers/staging/rdma/hfi1/chip.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/rdma/hfi1/chip.c b/drivers/staging/rdma/hfi1/chip.c index 52a75a6..e47420f 100644 --- a/drivers/staging/rdma/hfi1/chip.c +++ b/drivers/staging/rdma/hfi1/chip.c @@ -5415,6 +5415,8 @@ static int set_local_link_attributes(struct hfi1_pportdata *ppd) if (ppd->link_speed_enabled & OPA_LINK_SPEED_12_5G) ppd->local_tx_rate |= 1; } + + enable_lane_tx = 0xF; /* enable all four lanes */ ret = write_tx_settings(dd, enable_lane_tx, tx_polarity_inversion, rx_polarity_inversion, ppd->local_tx_rate); if (ret != HCMD_SUCCESS) |