clk: qcom: cbf-msm8996: 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() is renamed to .remove().

qcom_msm8996_cbf_icc_remove() returned zero unconditionally. After
changing this function to return void instead, the driver can be
converted trivially to use .remove_new().

Signed-off-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>

Author: Uwe Kleine-König

drivers/clk/qcom/clk-cbf-8996.c

@@ -250,13 +250,11 @@ static int qcom_msm8996_cbf_icc_register(struct platform_device *pdev, struct cl
 	return 0;
 }
 
-static int qcom_msm8996_cbf_icc_remove(struct platform_device *pdev)
+static void qcom_msm8996_cbf_icc_remove(struct platform_device *pdev)
 {
 	struct icc_provider *provider = platform_get_drvdata(pdev);
 
 	icc_clk_unregister(provider);
-
-	return 0;
 }
 #define qcom_msm8996_cbf_icc_sync_state icc_sync_state
 #else
@@ -266,7 +264,7 @@ static int qcom_msm8996_cbf_icc_register(struct platform_device *pdev,  struct c
 
 	return 0;
 }
-#define qcom_msm8996_cbf_icc_remove(pdev) (0)
+#define qcom_msm8996_cbf_icc_remove(pdev) { }
 #define qcom_msm8996_cbf_icc_sync_state NULL
 #endif
 
@@ -340,9 +338,9 @@ static int qcom_msm8996_cbf_probe(struct platform_device *pdev)
 	return qcom_msm8996_cbf_icc_register(pdev, &cbf_mux.clkr.hw);
 }
 
-static int qcom_msm8996_cbf_remove(struct platform_device *pdev)
+static void qcom_msm8996_cbf_remove(struct platform_device *pdev)
 {
-	return qcom_msm8996_cbf_icc_remove(pdev);
+	qcom_msm8996_cbf_icc_remove(pdev);
 }
 
 static const struct of_device_id qcom_msm8996_cbf_match_table[] = {
@@ -354,7 +352,7 @@ MODULE_DEVICE_TABLE(of, qcom_msm8996_cbf_match_table);
 
 static struct platform_driver qcom_msm8996_cbf_driver = {
 	.probe = qcom_msm8996_cbf_probe,
-	.remove = qcom_msm8996_cbf_remove,
+	.remove_new = qcom_msm8996_cbf_remove,
 	.driver = {
 		.name = "qcom-msm8996-cbf",
 		.of_match_table = qcom_msm8996_cbf_match_table,