From: Wey-Yi Guy Date: Tue, 10 Mar 2009 21:35:12 +0000 (-0700) Subject: iwlwifi: verify the antenna selection when receive fixed rate debugfs X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3c4955f8d9b706231d226d7a73877cb7d786277f;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git iwlwifi: verify the antenna selection when receive fixed rate debugfs When iwlwifi driver receive fixed rate debugfs command, validate the antenna selection, if the selection is invalid, report the valid antenna choice and do not set the rate scale table to fixed rate. Otherwise, set the entire rate scale table to the fixed rate request by the user. this validation can prevent sysassert happen in uCode Signed-off-by: Wey-Yi Guy Signed-off-by: Reinette Chatre Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c index 43c796bb580..cab7842a73a 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c @@ -2473,18 +2473,25 @@ static void rs_dbgfs_set_mcs(struct iwl_lq_sta *lq_sta, u32 *rate_n_flags, int index) { struct iwl_priv *priv; + u8 valid_tx_ant; + u8 ant_sel_tx; priv = lq_sta->drv; + valid_tx_ant = priv->hw_params.valid_tx_ant; if (lq_sta->dbg_fixed_rate) { - if (index < 12) { + ant_sel_tx = + ((lq_sta->dbg_fixed_rate & RATE_MCS_ANT_ABC_MSK) + >> RATE_MCS_ANT_POS); + if ((valid_tx_ant & ant_sel_tx) == ant_sel_tx) { *rate_n_flags = lq_sta->dbg_fixed_rate; + IWL_DEBUG_RATE(priv, "Fixed rate ON\n"); } else { - if (lq_sta->band == IEEE80211_BAND_5GHZ) - *rate_n_flags = 0x800D; - else - *rate_n_flags = 0x820A; + lq_sta->dbg_fixed_rate = 0; + IWL_ERR(priv, + "Invalid antenna selection 0x%X, Valid is 0x%X\n", + ant_sel_tx, valid_tx_ant); + IWL_DEBUG_RATE(priv, "Fixed rate OFF\n"); } - IWL_DEBUG_RATE(priv, "Fixed rate ON\n"); } else { IWL_DEBUG_RATE(priv, "Fixed rate OFF\n"); }