i2c: 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 (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.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Alain Volmat <alain.volmat@foss.st.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Acked-by: Jochen Friedrich <jochen@scram.de>
Acked-by: Peter Rosin <peda@axentia.se>
Acked-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Asmaa Mnebhi <asnaa@nvidia.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Chris Pringle <chris.pringle@phabrix.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Tali Perry <tali.perry@nuvoton.com>
Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

7 files changed, 14 insertions, 26 deletions

diff --git a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
index 1c78657631f4..24168e9f7df4 100644
--- a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
+++ b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
@@ -174,13 +174,12 @@ static int i2c_arbitrator_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int i2c_arbitrator_remove(struct platform_device *pdev)
+static void i2c_arbitrator_remove(struct platform_device *pdev)
 {
 	struct i2c_mux_core *muxc = platform_get_drvdata(pdev);
 
 	i2c_mux_del_adapters(muxc);
 	i2c_put_adapter(muxc->parent);
-	return 0;
 }
 
 static const struct of_device_id i2c_arbitrator_of_match[] = {
@@ -191,7 +190,7 @@ MODULE_DEVICE_TABLE(of, i2c_arbitrator_of_match);
 
 static struct platform_driver i2c_arbitrator_driver = {
 	.probe	= i2c_arbitrator_probe,
-	.remove	= i2c_arbitrator_remove,
+	.remove_new = i2c_arbitrator_remove,
 	.driver	= {
 		.name	= "i2c-arb-gpio-challenge",
 		.of_match_table = i2c_arbitrator_of_match,
diff --git a/drivers/i2c/muxes/i2c-demux-pinctrl.c b/drivers/i2c/muxes/i2c-demux-pinctrl.c
index f7a7405d4350..a3a122fae71e 100644
--- a/drivers/i2c/muxes/i2c-demux-pinctrl.c
+++ b/drivers/i2c/muxes/i2c-demux-pinctrl.c
@@ -282,7 +282,7 @@ err_rollback:
 	return err;
 }
 
-static int i2c_demux_pinctrl_remove(struct platform_device *pdev)
+static void i2c_demux_pinctrl_remove(struct platform_device *pdev)
 {
 	struct i2c_demux_pinctrl_priv *priv = platform_get_drvdata(pdev);
 	int i;
@@ -296,8 +296,6 @@ static int i2c_demux_pinctrl_remove(struct platform_device *pdev)
 		of_node_put(priv->chan[i].parent_np);
 		of_changeset_destroy(&priv->chan[i].chgset);
 	}
-
-	return 0;
 }
 
 static const struct of_device_id i2c_demux_pinctrl_of_match[] = {
@@ -312,7 +310,7 @@ static struct platform_driver i2c_demux_pinctrl_driver = {
 		.of_match_table = i2c_demux_pinctrl_of_match,
 	},
 	.probe	= i2c_demux_pinctrl_probe,
-	.remove	= i2c_demux_pinctrl_remove,
+	.remove_new = i2c_demux_pinctrl_remove,
 };
 module_platform_driver(i2c_demux_pinctrl_driver);
 
diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c
index 73a23e117ebe..5d5cbe0130cd 100644
--- a/drivers/i2c/muxes/i2c-mux-gpio.c
+++ b/drivers/i2c/muxes/i2c-mux-gpio.c
@@ -225,14 +225,12 @@ alloc_failed:
 	return ret;
 }
 
-static int i2c_mux_gpio_remove(struct platform_device *pdev)
+static void i2c_mux_gpio_remove(struct platform_device *pdev)
 {
 	struct i2c_mux_core *muxc = platform_get_drvdata(pdev);
 
 	i2c_mux_del_adapters(muxc);
 	i2c_put_adapter(muxc->parent);
-
-	return 0;
 }
 
 static const struct of_device_id i2c_mux_gpio_of_match[] = {
@@ -243,7 +241,7 @@ MODULE_DEVICE_TABLE(of, i2c_mux_gpio_of_match);
 
 static struct platform_driver i2c_mux_gpio_driver = {
 	.probe	= i2c_mux_gpio_probe,
-	.remove	= i2c_mux_gpio_remove,
+	.remove_new = i2c_mux_gpio_remove,
 	.driver	= {
 		.name	= "i2c-mux-gpio",
 		.of_match_table = i2c_mux_gpio_of_match,
diff --git a/drivers/i2c/muxes/i2c-mux-gpmux.c b/drivers/i2c/muxes/i2c-mux-gpmux.c
index 33024acaac02..0405af0e1510 100644
--- a/drivers/i2c/muxes/i2c-mux-gpmux.c
+++ b/drivers/i2c/muxes/i2c-mux-gpmux.c
@@ -142,19 +142,17 @@ err_parent:
 	return ret;
 }
 
-static int i2c_mux_remove(struct platform_device *pdev)
+static void i2c_mux_remove(struct platform_device *pdev)
 {
 	struct i2c_mux_core *muxc = platform_get_drvdata(pdev);
 
 	i2c_mux_del_adapters(muxc);
 	i2c_put_adapter(muxc->parent);
-
-	return 0;
 }
 
 static struct platform_driver i2c_mux_driver = {
 	.probe	= i2c_mux_probe,
-	.remove	= i2c_mux_remove,
+	.remove_new = i2c_mux_remove,
 	.driver	= {
 		.name	= "i2c-mux-gpmux",
 		.of_match_table = i2c_mux_of_match,
diff --git a/drivers/i2c/muxes/i2c-mux-mlxcpld.c b/drivers/i2c/muxes/i2c-mux-mlxcpld.c
index 1a879f6a31ef..3dda00f1df78 100644
--- a/drivers/i2c/muxes/i2c-mux-mlxcpld.c
+++ b/drivers/i2c/muxes/i2c-mux-mlxcpld.c
@@ -170,12 +170,11 @@ virt_reg_failed:
 	return err;
 }
 
-static int mlxcpld_mux_remove(struct platform_device *pdev)
+static void mlxcpld_mux_remove(struct platform_device *pdev)
 {
 	struct i2c_mux_core *muxc = platform_get_drvdata(pdev);
 
 	i2c_mux_del_adapters(muxc);
-	return 0;
 }
 
 static struct platform_driver mlxcpld_mux_driver = {
@@ -183,7 +182,7 @@ static struct platform_driver mlxcpld_mux_driver = {
 		.name = "i2c-mux-mlxcpld",
 	},
 	.probe = mlxcpld_mux_probe,
-	.remove = mlxcpld_mux_remove,
+	.remove_new = mlxcpld_mux_remove,
 };
 
 module_platform_driver(mlxcpld_mux_driver);
diff --git a/drivers/i2c/muxes/i2c-mux-pinctrl.c b/drivers/i2c/muxes/i2c-mux-pinctrl.c
index d5ad904756fd..18236b9fa14a 100644
--- a/drivers/i2c/muxes/i2c-mux-pinctrl.c
+++ b/drivers/i2c/muxes/i2c-mux-pinctrl.c
@@ -166,14 +166,12 @@ err_put_parent:
 	return ret;
 }
 
-static int i2c_mux_pinctrl_remove(struct platform_device *pdev)
+static void i2c_mux_pinctrl_remove(struct platform_device *pdev)
 {
 	struct i2c_mux_core *muxc = platform_get_drvdata(pdev);
 
 	i2c_mux_del_adapters(muxc);
 	i2c_put_adapter(muxc->parent);
-
-	return 0;
 }
 
 static const struct of_device_id i2c_mux_pinctrl_of_match[] = {
@@ -188,7 +186,7 @@ static struct platform_driver i2c_mux_pinctrl_driver = {
 		.of_match_table = i2c_mux_pinctrl_of_match,
 	},
 	.probe	= i2c_mux_pinctrl_probe,
-	.remove	= i2c_mux_pinctrl_remove,
+	.remove_new = i2c_mux_pinctrl_remove,
 };
 module_platform_driver(i2c_mux_pinctrl_driver);
 
diff --git a/drivers/i2c/muxes/i2c-mux-reg.c b/drivers/i2c/muxes/i2c-mux-reg.c
index 30a6de1694e0..9efc1ed01577 100644
--- a/drivers/i2c/muxes/i2c-mux-reg.c
+++ b/drivers/i2c/muxes/i2c-mux-reg.c
@@ -233,14 +233,12 @@ err_put_parent:
 	return ret;
 }
 
-static int i2c_mux_reg_remove(struct platform_device *pdev)
+static void i2c_mux_reg_remove(struct platform_device *pdev)
 {
 	struct i2c_mux_core *muxc = platform_get_drvdata(pdev);
 
 	i2c_mux_del_adapters(muxc);
 	i2c_put_adapter(muxc->parent);
-
-	return 0;
 }
 
 static const struct of_device_id i2c_mux_reg_of_match[] = {
@@ -251,7 +249,7 @@ MODULE_DEVICE_TABLE(of, i2c_mux_reg_of_match);
 
 static struct platform_driver i2c_mux_reg_driver = {
 	.probe	= i2c_mux_reg_probe,
-	.remove	= i2c_mux_reg_remove,
+	.remove_new = i2c_mux_reg_remove,
 	.driver	= {
 		.name	= "i2c-mux-reg",
 		.of_match_table = of_match_ptr(i2c_mux_reg_of_match),