linux-kernel - [PATCH v2] wifi: wlcore: fix unbalanced pm

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Message-Id: <20250104195507.402673-1-akemnade@kernel.org>
Date: Sat,  4 Jan 2025 20:55:07 +0100
From: akemnade@...nel.org
To: kvalo@...nel.org,
	rmk+kernel@...linux.org.uk,
	johannes.berg@...el.com,
	miriam.rachel.korenblit@...el.com,
	leitao@...ian.org,
	andreas@...nade.info,
	emmanuel.grumbach@...el.com,
	tony@...mide.com,
	linux-wireless@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2] wifi: wlcore: fix unbalanced pm_runtime calls

From: Andreas Kemnade <andreas@...nade.info>

If firmware boot failes, runtime pm is put too often:
[12092.708099] wlcore: ERROR firmware boot failed despite 3 retries
[12092.708099] wl18xx_driver wl18xx.1.auto: Runtime PM usage count underflow!
Fix that by redirecting all error gotos before runtime_get so that runtime is
not put.

Fixes: c40aad28a3cf ("wlcore: Make sure firmware is initialized in wl1271_op_add_interface()")
Signed-off-by: Andreas Kemnade <andreas@...nade.info>
---
Changes in V2:
- add fixes
- fix one more place

 drivers/net/wireless/ti/wlcore/main.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 986b07bfa0ee8..8fb58a5d911cb 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -2612,24 +2612,24 @@ static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 	if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags) ||
 	    test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)) {
 		ret = -EBUSY;
-		goto out;
+		goto out_unlock;
 	}
 
 
 	ret = wl12xx_init_vif_data(wl, vif);
 	if (ret < 0)
-		goto out;
+		goto out_unlock;
 
 	wlvif->wl = wl;
 	role_type = wl12xx_get_role_type(wl, wlvif);
 	if (role_type == WL12XX_INVALID_ROLE_TYPE) {
 		ret = -EINVAL;
-		goto out;
+		goto out_unlock;
 	}
 
 	ret = wlcore_allocate_hw_queue_base(wl, wlvif);
 	if (ret < 0)
-		goto out;
+		goto out_unlock;
 
 	/*
 	 * TODO: after the nvs issue will be solved, move this block
@@ -2644,7 +2644,7 @@ static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 
 		ret = wl12xx_init_fw(wl);
 		if (ret < 0)
-			goto out;
+			goto out_unlock;
 	}
 
 	/*
-- 
2.39.5