iwlwifi: do not set dual_stream_ant_msk for 3 streams

This patch fixes a bug introduced by commit "iwlwifi: adding MIMO3 support
in rate scaling". We should not set the dual_stream_ant_msk (for 2x2 MIMO)
when using a 3x3 rate, this will cause a SYSASSERT in uCode.

Note: there is no triple_stream_ant_msk, because all three antennas are used.

Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 0 insertions, 3 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index 786b11d52b45..98b6b37951b3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -2666,9 +2666,6 @@ static void rs_fill_link_cmd(const struct iwl_priv *priv,
         } else if (num_of_ant(tbl_type.ant_type) == 2) {
                 lq_cmd->general_params.dual_stream_ant_msk =
                                                 tbl_type.ant_type;
-        } else if (num_of_ant(tbl_type.ant_type) == 3) {
-                lq_cmd->general_params.dual_stream_ant_msk =
-                                                tbl_type.ant_type;
         } /* otherwise we don't modify the existing value */
 
         index++;