From: Eliad Peller <eliad@wizery.com>
Date: Sun, 4 Mar 2012 08:55:54 +0000 (+0200)
Subject: wl12xx: avoid bug_on_recovery during fw switch
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e9ba7152c1f5babd6ad9ad45619e0a10b4c08554;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

wl12xx: avoid bug_on_recovery during fw switch

Add a flag to indicate we initiated a recovery work
on purpose, in order to avoid triggering BUG() (when
the bug_on_recovery module param was set).

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---

diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index 89bf9eadc840..3c966f2e00d0 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -1154,7 +1154,8 @@ static void wl1271_recovery_work(struct work_struct *work)
 	wl1271_info("Hardware recovery in progress. FW ver: %s pc: 0x%x",
 		    wl->chip.fw_ver_str, wl1271_read32(wl, SCR_PAD4));
 
-	BUG_ON(bug_on_recovery);
+	BUG_ON(bug_on_recovery &&
+	       !test_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags));
 
 	/*
 	 * Advance security sequence number to overcome potential progress
@@ -2133,6 +2134,7 @@ static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 
 	if (wl12xx_need_fw_change(wl, vif_count, true)) {
 		wl12xx_force_active_psm(wl);
+		set_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags);
 		mutex_unlock(&wl->mutex);
 		wl1271_recovery_work(&wl->recovery_work);
 		return 0;
@@ -2317,6 +2319,7 @@ static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
 	WARN_ON(iter != wlvif);
 	if (wl12xx_need_fw_change(wl, vif_count, false)) {
 		wl12xx_force_active_psm(wl);
+		set_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags);
 		wl12xx_queue_recovery_work(wl);
 		cancel_recovery = false;
 	}
diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h
index b26b1be9a98b..6e13a3073e9f 100644
--- a/drivers/net/wireless/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/wl12xx/wl12xx.h
@@ -260,6 +260,7 @@ enum wl12xx_flags {
 	WL1271_FLAG_SOFT_GEMINI,
 	WL1271_FLAG_RECOVERY_IN_PROGRESS,
 	WL1271_FLAG_VIF_CHANGE_IN_PROGRESS,
+	WL1271_FLAG_INTENDED_FW_RECOVERY,
 };
 
 enum wl12xx_vif_flags {