linux-kernel - [PATCH 2/3] memory: ti-aemif: 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-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240809-ti-aemif-v1-2-27b1e5001390@linaro.org>
Date: Fri, 09 Aug 2024 16:15:55 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Santosh Shilimkar <ssantosh@...nel.org>, 
 Krzysztof Kozlowski <krzk@...nel.org>
Cc: linux-kernel@...r.kernel.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 2/3] memory: ti-aemif: use devm_clk_get_enabled() and
 shrink the code

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

Remove several lines of code and a jump label by using the managed
variant of clk_get() that also prepares and enables the clock (and
disables and unprepares it on driver detach).

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 drivers/memory/ti-aemif.c | 29 ++++++-----------------------
 1 file changed, 6 insertions(+), 23 deletions(-)

diff --git a/drivers/memory/ti-aemif.c b/drivers/memory/ti-aemif.c
index b92cab455cbb..fbe0786f5ac4 100644
--- a/drivers/memory/ti-aemif.c
+++ b/drivers/memory/ti-aemif.c
@@ -338,26 +338,20 @@ static int aemif_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, aemif);
 
-	aemif->clk = devm_clk_get(dev, NULL);
+	aemif->clk = devm_clk_get_enabled(dev, NULL);
 	if (IS_ERR(aemif->clk)) {
 		dev_err(dev, "cannot get clock 'aemif'\n");
 		return PTR_ERR(aemif->clk);
 	}
 
-	ret = clk_prepare_enable(aemif->clk);
-	if (ret)
-		return ret;
-
 	aemif->clk_rate = clk_get_rate(aemif->clk) / MSEC_PER_SEC;
 
 	if (np && of_device_is_compatible(np, "ti,da850-aemif"))
 		aemif->cs_offset = 2;
 
 	aemif->base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(aemif->base)) {
-		ret = PTR_ERR(aemif->base);
-		goto error;
-	}
+	if (IS_ERR(aemif->base))
+		return PTR_ERR(aemif->base);
 
 	if (np) {
 		/*
@@ -370,7 +364,7 @@ static int aemif_probe(struct platform_device *pdev)
 			ret = of_aemif_parse_abus_config(pdev, child_np);
 			if (ret < 0) {
 				of_node_put(child_np);
-				goto error;
+				return ret;
 			}
 		}
 	}
@@ -380,7 +374,7 @@ static int aemif_probe(struct platform_device *pdev)
 		if (ret < 0) {
 			dev_err(dev, "Error configuring chip select %d\n",
 				aemif->cs_data[i].cs);
-			goto error;
+			return ret;
 		}
 	}
 
@@ -393,27 +387,16 @@ static int aemif_probe(struct platform_device *pdev)
 			ret = of_platform_populate(child_np, NULL, NULL, dev);
 			if (ret < 0) {
 				of_node_put(child_np);
-				goto error;
+				return ret;
 			}
 		}
 	}
 
 	return 0;
-error:
-	clk_disable_unprepare(aemif->clk);
-	return ret;
-}
-
-static void aemif_remove(struct platform_device *pdev)
-{
-	struct aemif_device *aemif = platform_get_drvdata(pdev);
-
-	clk_disable_unprepare(aemif->clk);
 }
 
 static struct platform_driver aemif_driver = {
 	.probe = aemif_probe,
-	.remove_new = aemif_remove,
 	.driver = {
 		.name = "ti-aemif",
 		.of_match_table = of_match_ptr(aemif_of_match),

-- 
2.43.0