From: Andy Lutomirski <luto@amacapital.net>
Date: Sat, 7 Jun 2014 16:21:15 +0000 (-0700)
Subject: iwlwifi: dvm: add a force_cam module parameter to fully disable power saving
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=c9e38e770981ff25d203f0f5c1423a863c484446;p=deliverable%2Flinux.git

iwlwifi: dvm: add a force_cam module parameter to fully disable power saving

iwldvm stalls are often blamed on power management.  Add an option
to force it all the way off.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
---

diff --git a/drivers/net/wireless/iwlwifi/dvm/power.c b/drivers/net/wireless/iwlwifi/dvm/power.c
index f2c1439566b5..760c45c34ef3 100644
--- a/drivers/net/wireless/iwlwifi/dvm/power.c
+++ b/drivers/net/wireless/iwlwifi/dvm/power.c
@@ -40,6 +40,10 @@
 #include "commands.h"
 #include "power.h"
 
+static bool force_cam;
+module_param(force_cam, bool, 0644);
+MODULE_PARM_DESC(force_cam, "force continuously aware mode (no power saving at all)");
+
 /*
  * Setting power level allows the card to go to sleep when not busy.
  *
@@ -288,6 +292,11 @@ static void iwl_power_build_cmd(struct iwl_priv *priv,
 	bool enabled = priv->hw->conf.flags & IEEE80211_CONF_PS;
 	int dtimper;
 
+	if (force_cam) {
+		iwl_power_sleep_cam_cmd(priv, cmd);
+		return;
+	}
+
 	dtimper = priv->hw->conf.ps_dtim_period ?: 1;
 
 	if (priv->wowlan)