linux-kernel - [PATCH] wifi: ath10k: Fix error handling in ath10k_ahb_clock

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Message-ID: <20260207082424.596554-1-alperyasinak1@gmail.com>
Date: Sat,  7 Feb 2026 11:24:24 +0300
From: Alper Ak <alperyasinak1@...il.com>
To: Jeff Johnson <jjohnson@...nel.org>
Cc: Alper Ak <alperyasinak1@...il.com>,
	Kalle Valo <kvalo@....qualcomm.com>,
	Raja Mani <rmani@....qualcomm.com>,
	linux-wireless@...r.kernel.org,
	ath10k@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] wifi: ath10k: Fix error handling in ath10k_ahb_clock_init()

The devm_clk_get() function never returns NULL, it only returns valid
clock pointers or an ERR_PTR() on failure. Using IS_ERR_OR_NULL() is
incorrect and causes static analyzer warnings about passing zero to
PTR_ERR() when the theoretical NULL case is handled.

Fixes: 8beff219c528 ("ath10k: add clock ctrl related functions in ahb")
Signed-off-by: Alper Ak <alperyasinak1@...il.com>
---
 drivers/net/wireless/ath/ath10k/ahb.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/ahb.c b/drivers/net/wireless/ath/ath10k/ahb.c
index eb8b35b6224d..7456f885d2b5 100644
--- a/drivers/net/wireless/ath/ath10k/ahb.c
+++ b/drivers/net/wireless/ath/ath10k/ahb.c
@@ -87,24 +87,24 @@ static int ath10k_ahb_clock_init(struct ath10k *ar)
 	dev = &ar_ahb->pdev->dev;
 
 	ar_ahb->cmd_clk = devm_clk_get(dev, "wifi_wcss_cmd");
-	if (IS_ERR_OR_NULL(ar_ahb->cmd_clk)) {
+	if (IS_ERR(ar_ahb->cmd_clk)) {
 		ath10k_err(ar, "failed to get cmd clk: %ld\n",
 			   PTR_ERR(ar_ahb->cmd_clk));
-		return ar_ahb->cmd_clk ? PTR_ERR(ar_ahb->cmd_clk) : -ENODEV;
+		return PTR_ERR(ar_ahb->cmd_clk);
 	}
 
 	ar_ahb->ref_clk = devm_clk_get(dev, "wifi_wcss_ref");
-	if (IS_ERR_OR_NULL(ar_ahb->ref_clk)) {
+	if (IS_ERR(ar_ahb->ref_clk)) {
 		ath10k_err(ar, "failed to get ref clk: %ld\n",
 			   PTR_ERR(ar_ahb->ref_clk));
-		return ar_ahb->ref_clk ? PTR_ERR(ar_ahb->ref_clk) : -ENODEV;
+		return PTR_ERR(ar_ahb->ref_clk);
 	}
 
 	ar_ahb->rtc_clk = devm_clk_get(dev, "wifi_wcss_rtc");
-	if (IS_ERR_OR_NULL(ar_ahb->rtc_clk)) {
+	if (IS_ERR(ar_ahb->rtc_clk)) {
 		ath10k_err(ar, "failed to get rtc clk: %ld\n",
 			   PTR_ERR(ar_ahb->rtc_clk));
-		return ar_ahb->rtc_clk ? PTR_ERR(ar_ahb->rtc_clk) : -ENODEV;
+		return PTR_ERR(ar_ahb->rtc_clk);
 	}
 
 	return 0;
-- 
2.43.0