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authorWey-Yi Guy <wey-yi.w.guy@intel.com>2011-12-08 15:52:00 -0800
committerRohan Somvanshi <rsomvanshi@nvidia.com>2012-01-11 10:08:47 -0800
commit8e456212aa53c417f3decc8d9bd8f77fac782491 (patch)
tree1da1bb34afe03ebc26009d6a6466c5b26cb936a3 /drivers/net
parentfaedcbb048581d41ed499c6d477da0c004171c52 (diff)
iwlwifi: do not set the sequence control bit is not needed
commit 123877b80ed62c3b897c53357b622574c023b642 upstream. Check the IEEE80211_TX_CTL_ASSIGN_SEQ flag from mac80211, then decide how to set the TX_CMD_FLG_SEQ_CTL_MSK bit. Setting the wrong bit in BAR frame whill make the firmware to increment the sequence number which is incorrect and cause unknown behavior. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: I3b610f6383fc35467b8451621b7ce4d154196e4a Reviewed-on: http://git-master/r/74190 Reviewed-by: Varun Wadekar <vwadekar@nvidia.com> Tested-by: Varun Wadekar <vwadekar@nvidia.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-agn-tx.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
index 53bb59ee719d..475f9d4f56e2 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
@@ -166,7 +166,10 @@ static void iwlagn_tx_cmd_build_basic(struct iwl_priv *priv,
tx_cmd->tid_tspec = qc[0] & 0xf;
tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
} else {
- tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
+ if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
+ tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
+ else
+ tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
}
iwlagn_tx_cmd_protection(priv, info, fc, &tx_flags);