linux-kernel - [PATCH] net: ath9k: use devm for gpio_request

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240731210052.6974-1-rosenp@gmail.com>
Date: Wed, 31 Jul 2024 14:00:09 -0700
From: Rosen Penev <rosenp@...il.com>
To: linux-kernel@...r.kernel.org
Subject: [PATCH] net: ath9k: use devm for gpio_request_one

No need to manually free the gpio now.

Remove if statement as it's redundant now. The gpio bit now gets cleared
whether set or not.

Signed-off-by: Rosen Penev <rosenp@...il.com>
---
 drivers/net/wireless/ath/ath9k/hw.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 5982e0db45f9..dc18a813f1a0 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -2732,7 +2732,7 @@ static void ath9k_hw_gpio_cfg_soc(struct ath_hw *ah, u32 gpio, bool out,
 	if (ah->caps.gpio_requested & BIT(gpio))
 		return;
 
-	err = gpio_request_one(gpio, out ? GPIOF_OUT_INIT_LOW : GPIOF_IN, label);
+	err = devm_gpio_request_one(ah->dev, gpio, out ? GPIOF_OUT_INIT_LOW : GPIOF_IN, label);
 	if (err) {
 		ath_err(ath9k_hw_common(ah), "request GPIO%d failed:%d\n",
 			gpio, err);
@@ -2801,10 +2801,7 @@ void ath9k_hw_gpio_free(struct ath_hw *ah, u32 gpio)
 
 	WARN_ON(gpio >= ah->caps.num_gpio_pins);
 
-	if (ah->caps.gpio_requested & BIT(gpio)) {
-		gpio_free(gpio);
-		ah->caps.gpio_requested &= ~BIT(gpio);
-	}
+	ah->caps.gpio_requested &= ~BIT(gpio);
 }
 EXPORT_SYMBOL(ath9k_hw_gpio_free);
 
-- 
2.45.2