linux-kernel - [PATCH 20/40] soc/qcom: ocmem: Convert to platform remove callback returning void

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Message-Id: <20230925095532.1984344-21-u.kleine-koenig@pengutronix.de>
Date:   Mon, 25 Sep 2023 11:55:11 +0200
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...gutronix.de
Subject: [PATCH 20/40] soc/qcom: ocmem: Convert to platform remove callback returning void

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new() which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
 drivers/soc/qcom/ocmem.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/soc/qcom/ocmem.c b/drivers/soc/qcom/ocmem.c
index 20f5461d46b9..5e9f2c1fd305 100644
--- a/drivers/soc/qcom/ocmem.c
+++ b/drivers/soc/qcom/ocmem.c
@@ -416,14 +416,12 @@ static int ocmem_dev_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int ocmem_dev_remove(struct platform_device *pdev)
+static void ocmem_dev_remove(struct platform_device *pdev)
 {
 	struct ocmem *ocmem = platform_get_drvdata(pdev);
 
 	clk_disable_unprepare(ocmem->core_clk);
 	clk_disable_unprepare(ocmem->iface_clk);
-
-	return 0;
 }
 
 static const struct ocmem_config ocmem_8226_config = {
@@ -446,7 +444,7 @@ MODULE_DEVICE_TABLE(of, ocmem_of_match);
 
 static struct platform_driver ocmem_driver = {
 	.probe = ocmem_dev_probe,
-	.remove = ocmem_dev_remove,
+	.remove_new = ocmem_dev_remove,
 	.driver = {
 		.name = "ocmem",
 		.of_match_table = ocmem_of_match,
-- 
2.40.1