ASoC: uniphier: Make uniphier_aio_remove() return 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 (mostly) ignored
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.

uniphier_aio_remove() returned zero unconditionally.  Make it return
void instead and convert all users to struct
platform_device::remove_new().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20231013221945.1489203-16-u.kleine-koenig@pengutronix.deSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/uniphier/aio-cpu.c

@@ -822,14 +822,12 @@ int uniphier_aio_probe(struct platform_device *pdev)
 }
 EXPORT_SYMBOL_GPL(uniphier_aio_probe);
 
-int uniphier_aio_remove(struct platform_device *pdev)
+void uniphier_aio_remove(struct platform_device *pdev)
 {
 	struct uniphier_aio_chip *chip = platform_get_drvdata(pdev);
 
 	reset_control_assert(chip->rst);
 	clk_disable_unprepare(chip->clk);
-
-	return 0;
 }
 EXPORT_SYMBOL_GPL(uniphier_aio_remove);
 

sound/soc/uniphier/aio-ld11.c

@@ -347,7 +347,7 @@ static struct platform_driver uniphier_aio_driver = {
 		.of_match_table = of_match_ptr(uniphier_aio_of_match),
 	},
 	.probe    = uniphier_aio_probe,
-	.remove   = uniphier_aio_remove,
+	.remove_new = uniphier_aio_remove,
 };
 module_platform_driver(uniphier_aio_driver);
 

sound/soc/uniphier/aio-pxs2.c

@@ -256,7 +256,7 @@ static struct platform_driver uniphier_aio_driver = {
 		.of_match_table = of_match_ptr(uniphier_aio_of_match),
 	},
 	.probe    = uniphier_aio_probe,
-	.remove   = uniphier_aio_remove,
+	.remove_new = uniphier_aio_remove,
 };
 module_platform_driver(uniphier_aio_driver);
 

sound/soc/uniphier/aio.h

@@ -307,7 +307,7 @@ int uniphier_aiodma_soc_register_platform(struct platform_device *pdev);
 extern const struct snd_compress_ops uniphier_aio_compress_ops;
 
 int uniphier_aio_probe(struct platform_device *pdev);
-int uniphier_aio_remove(struct platform_device *pdev);
+void uniphier_aio_remove(struct platform_device *pdev);
 extern const struct snd_soc_dai_ops uniphier_aio_i2s_ld11_ops;
 extern const struct snd_soc_dai_ops uniphier_aio_i2s_pxs2_ops;
 extern const struct snd_soc_dai_ops uniphier_aio_spdif_ld11_ops;