The patch below does not apply to the 3.17-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 5ac6c72e594471acfa5b00210c51d533a73413ad Mon Sep 17 00:00:00 2001
From: Luciano Coelho <luciano.coelho@xxxxxxxxx>
Date: Tue, 21 Oct 2014 16:12:18 +0300
Subject: [PATCH] iwlwifi: mvm: check TLV flag before trying to use hotspot
firmware commands
Older firmwares do not provide support for the HOT_SPOT_CMD command.
Check for the appropriate TLV flag that declares hotspot support in
the firmware to prevent a firmware assertion failure that can be
triggered from the userspace,
Cc: stable@xxxxxxxxxxxxxxx [3.17+]
Signed-off-by: Luciano Coelho <luciano.coelho@xxxxxxxxx>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
diff --git a/drivers/net/wireless/iwlwifi/iwl-fw.h b/drivers/net/wireless/iwlwifi/iwl-fw.h
index 4f6e66892acc..b894a84e8393 100644
--- a/drivers/net/wireless/iwlwifi/iwl-fw.h
+++ b/drivers/net/wireless/iwlwifi/iwl-fw.h
@@ -155,6 +155,7 @@ enum iwl_ucode_tlv_api {
* @IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT: supports Quiet Period requests
* @IWL_UCODE_TLV_CAPA_DQA_SUPPORT: supports dynamic queue allocation (DQA),
* which also implies support for the scheduler configuration command
+ * @IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT: supports Hot Spot Command
*/
enum iwl_ucode_tlv_capa {
IWL_UCODE_TLV_CAPA_D0I3_SUPPORT = BIT(0),
@@ -163,6 +164,7 @@ enum iwl_ucode_tlv_capa {
IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT = BIT(10),
IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT = BIT(11),
IWL_UCODE_TLV_CAPA_DQA_SUPPORT = BIT(12),
+ IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT = BIT(18),
};
/* The default calibrate table size if not specified by firmware file */
diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index b62405865b25..b6d2683da3a9 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -2448,9 +2448,15 @@ static int iwl_mvm_roc(struct ieee80211_hw *hw,
switch (vif->type) {
case NL80211_IFTYPE_STATION:
- /* Use aux roc framework (HS20) */
- ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
- vif, duration);
+ if (mvm->fw->ucode_capa.capa[0] &
+ IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
+ /* Use aux roc framework (HS20) */
+ ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
+ vif, duration);
+ goto out_unlock;
+ }
+ IWL_ERR(mvm, "hotspot not supported\n");
+ ret = -EINVAL;
goto out_unlock;
case NL80211_IFTYPE_P2P_DEVICE:
/* handle below */
--
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