linux-kernel - [PATCH] nvmem: jz4780-efuse: 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: <20240820102333.133503-1-link@vivo.com>
Date: Tue, 20 Aug 2024 18:23:33 +0800
From: Huan Yang <link@...o.com>
To: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	linux-kernel@...r.kernel.org
Cc: opensource.kernel@...o.com,
	Huan Yang <link@...o.com>
Subject: [PATCH] nvmem: jz4780-efuse: Use devm_clk_get_enabled() helpers

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

This simplifies the code and avoids the calls to clk_disable_unprepare().

Signed-off-by: Huan Yang <link@...o.com>
---
 drivers/nvmem/jz4780-efuse.c | 18 +-----------------
 1 file changed, 1 insertion(+), 17 deletions(-)

diff --git a/drivers/nvmem/jz4780-efuse.c b/drivers/nvmem/jz4780-efuse.c
index 0b01b840edd9..2b5badfbf22f 100644
--- a/drivers/nvmem/jz4780-efuse.c
+++ b/drivers/nvmem/jz4780-efuse.c
@@ -131,11 +131,6 @@ static const struct regmap_config jz4780_efuse_regmap_config = {
 	.max_register = JZ_EFUDATA(7),
 };
 
-static void clk_disable_unprepare_helper(void *clock)
-{
-	clk_disable_unprepare(clock);
-}
-
 static int jz4780_efuse_probe(struct platform_device *pdev)
 {
 	struct nvmem_device *nvmem;
@@ -146,7 +141,6 @@ static int jz4780_efuse_probe(struct platform_device *pdev)
 	unsigned long rd_strobe;
 	struct device *dev = &pdev->dev;
 	void __iomem *regs;
-	int ret;
 
 	efuse = devm_kzalloc(dev, sizeof(*efuse), GFP_KERNEL);
 	if (!efuse)
@@ -161,20 +155,10 @@ static int jz4780_efuse_probe(struct platform_device *pdev)
 	if (IS_ERR(efuse->map))
 		return PTR_ERR(efuse->map);
 
-	efuse->clk = devm_clk_get(&pdev->dev, NULL);
+	efuse->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(efuse->clk))
 		return PTR_ERR(efuse->clk);
 
-	ret = clk_prepare_enable(efuse->clk);
-	if (ret < 0)
-		return ret;
-
-	ret = devm_add_action_or_reset(&pdev->dev,
-				       clk_disable_unprepare_helper,
-				       efuse->clk);
-	if (ret < 0)
-		return ret;
-
 	clk_rate = clk_get_rate(efuse->clk);
 
 	efuse->dev = dev;
-- 
2.45.2