linux-kernel - [PATCH] watchdog: rtd119x: Use devm_clk_get

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: <14b521b821279bc5111dc80b55d0936c5767c737.1672418470.git.christophe.jaillet@wanadoo.fr>
Date:   Fri, 30 Dec 2022 17:41:31 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-watchdog@...r.kernel.org
Subject: [PATCH] watchdog: rtd119x: Use devm_clk_get_enabled() helper

The devm_clk_get_enabled() helper:
   - calls devm_clk_get()
   - calls clk_prepare_enable() and registers what is needed in order to
     call clk_disable_unprepare() when needed, as a managed resource.

This simplifies the code and avoids the need of a dedicated function used
with devm_add_action_or_reset().

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/watchdog/rtd119x_wdt.c | 16 +---------------
 1 file changed, 1 insertion(+), 15 deletions(-)

diff --git a/drivers/watchdog/rtd119x_wdt.c b/drivers/watchdog/rtd119x_wdt.c
index 834b94ff3f90..95c8d7abce42 100644
--- a/drivers/watchdog/rtd119x_wdt.c
+++ b/drivers/watchdog/rtd119x_wdt.c
@@ -94,16 +94,10 @@ static const struct of_device_id rtd119x_wdt_dt_ids[] = {
 	 { }
 };
 
-static void rtd119x_clk_disable_unprepare(void *data)
-{
-	clk_disable_unprepare(data);
-}
-
 static int rtd119x_wdt_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct rtd119x_watchdog_device *data;
-	int ret;
 
 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 	if (!data)
@@ -113,18 +107,10 @@ static int rtd119x_wdt_probe(struct platform_device *pdev)
 	if (IS_ERR(data->base))
 		return PTR_ERR(data->base);
 
-	data->clk = devm_clk_get(dev, NULL);
+	data->clk = devm_clk_get_enabled(dev, NULL);
 	if (IS_ERR(data->clk))
 		return PTR_ERR(data->clk);
 
-	ret = clk_prepare_enable(data->clk);
-	if (ret)
-		return ret;
-	ret = devm_add_action_or_reset(dev, rtd119x_clk_disable_unprepare,
-				       data->clk);
-	if (ret)
-		return ret;
-
 	data->wdt_dev.info = &rtd119x_wdt_info;
 	data->wdt_dev.ops = &rtd119x_wdt_ops;
 	data->wdt_dev.timeout = 120;
-- 
2.34.1