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iwlwifi: mvm: rs: fix handling of column switch error 

If we can't switch to a column because no rates are supported
in that column this led to a state where the search cycle
got stuck and never ended. This in turn also led to aggregation
not being turned on. Fix this by marking a column as
visited if we can't switch to it.

Reported-and-tested-by: Karl Beldan <karl.beldan@gmail.com>
Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Eyal Shapira 2014-01-07 18:19:35 +02:00 committed by Emmanuel Grumbach
parent 91b0d11984
commit 75d3e2d693
1 changed files with 2 additions and 1 deletions
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3
drivers/net/wireless/iwlwifi/mvm/rs.c
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@ -1591,6 +1591,8 @@ static int rs_switch_to_column(struct iwl_mvm *mvm,
search_tbl->column = col_id;
rs_set_expected_tpt_table(lq_sta, search_tbl);
lq_sta->visited_columns |= BIT(col_id);
/* Get the best matching rate if we're changing modes. e.g.
* SISO->MIMO, LEGACY->SISO, MIMO->SISO
*/
@ -1614,7 +1616,6 @@ static int rs_switch_to_column(struct iwl_mvm *mvm,
IWL_DEBUG_RATE(mvm, "Switched to column %d: Index %d\n",
col_id, rate->index);
lq_sta->visited_columns |= BIT(col_id);
return 0;
err: