diff --git a/[refs] b/[refs]
index d50b4b576b87..d9141b41b12c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d6ee27eb13beab94056e0de52d81220058ca2297
+refs/heads/master: d012d04e4d6312ea157b6cf19e9689af934f5aa7
diff --git a/trunk/drivers/net/wireless/iwlwifi/iwl-prph.h b/trunk/drivers/net/wireless/iwlwifi/iwl-prph.h
index 3b1069290fa9..dfd54662e3e6 100644
--- a/trunk/drivers/net/wireless/iwlwifi/iwl-prph.h
+++ b/trunk/drivers/net/wireless/iwlwifi/iwl-prph.h
@@ -224,6 +224,7 @@
 #define SCD_TXFACT		(SCD_BASE + 0x10)
 #define SCD_ACTIVE		(SCD_BASE + 0x14)
 #define SCD_QUEUECHAIN_SEL	(SCD_BASE + 0xe8)
+#define SCD_CHAINEXT_EN		(SCD_BASE + 0x244)
 #define SCD_AGGR_SEL		(SCD_BASE + 0x248)
 #define SCD_INTERRUPT_MASK	(SCD_BASE + 0x108)
 
diff --git a/trunk/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c b/trunk/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
index ec6fb395b84d..79c6b91417f9 100644
--- a/trunk/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
+++ b/trunk/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
@@ -1058,6 +1058,11 @@ static void iwl_tx_start(struct iwl_trans *trans)
 	iwl_write_prph(trans, SCD_DRAM_BASE_ADDR,
 		       trans_pcie->scd_bc_tbls.dma >> 10);
 
+	/* The chain extension of the SCD doesn't work well. This feature is
+	 * enabled by default by the HW, so we need to disable it manually.
+	 */
+	iwl_write_prph(trans, SCD_CHAINEXT_EN, 0);
+
 	/* Enable DMA channel */
 	for (chan = 0; chan < FH_TCSR_CHNL_NUM ; chan++)
 		iwl_write_direct32(trans, FH_TCSR_CHNL_TX_CONFIG_REG(chan),