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authorWey-Yi Guy <wey-yi.w.guy@intel.com>2011-12-08 15:52:00 -0800
committerJohn W. Linville <linville@tuxdriver.com>2011-12-12 14:23:27 -0500
commit123877b80ed62c3b897c53357b622574c023b642 (patch)
tree61104e080b0211de41e6e7741f16d5bbab05b3a4 /drivers/net
parent329456d1ffb416c220813725b7363cda9975c9aa (diff)
downloadlinux-linaro-123877b80ed62c3b897c53357b622574c023b642.tar.gz
iwlwifi: do not set the sequence control bit is not needed
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. CC: stable@vger.kernel.org #3.0+ Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.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 35a6b71f358..df1540ca610 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
@@ -91,7 +91,10 @@ 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);