Regulators: wm831x-xxx - clean up driver data after removal

It is a good tone to reset driver data after unbinding the device.
Also set up drivers owner.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

3 files changed, 20 insertions, 0 deletions

diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c
index 0a6577577e8d..6e18e56d850b 100644
--- a/drivers/regulator/wm831x-dcdc.c
+++ b/drivers/regulator/wm831x-dcdc.c
@@ -600,6 +600,8 @@ static __devexit int wm831x_buckv_remove(struct platform_device *pdev)
 	struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
 	struct wm831x *wm831x = dcdc->wm831x;
 
+	platform_set_drvdata(pdev, NULL);
+
 	wm831x_free_irq(wm831x, platform_get_irq_byname(pdev, "HC"), dcdc);
 	wm831x_free_irq(wm831x, platform_get_irq_byname(pdev, "UV"), dcdc);
 	regulator_unregister(dcdc->regulator);
@@ -615,6 +617,7 @@ static struct platform_driver wm831x_buckv_driver = {
 	.remove = __devexit_p(wm831x_buckv_remove),
 	.driver		= {
 		.name	= "wm831x-buckv",
+		.owner	= THIS_MODULE,
 	},
 };
 
@@ -769,6 +772,8 @@ static __devexit int wm831x_buckp_remove(struct platform_device *pdev)
 	struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
 	struct wm831x *wm831x = dcdc->wm831x;
 
+	platform_set_drvdata(pdev, NULL);
+
 	wm831x_free_irq(wm831x, platform_get_irq_byname(pdev, "UV"), dcdc);
 	regulator_unregister(dcdc->regulator);
 	kfree(dcdc);
@@ -781,6 +786,7 @@ static struct platform_driver wm831x_buckp_driver = {
 	.remove = __devexit_p(wm831x_buckp_remove),
 	.driver		= {
 		.name	= "wm831x-buckp",
+		.owner	= THIS_MODULE,
 	},
 };
 
@@ -895,6 +901,8 @@ static __devexit int wm831x_boostp_remove(struct platform_device *pdev)
 	struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
 	struct wm831x *wm831x = dcdc->wm831x;
 
+	platform_set_drvdata(pdev, NULL);
+
 	wm831x_free_irq(wm831x, platform_get_irq_byname(pdev, "UV"), dcdc);
 	regulator_unregister(dcdc->regulator);
 	kfree(dcdc);
@@ -907,6 +915,7 @@ static struct platform_driver wm831x_boostp_driver = {
 	.remove = __devexit_p(wm831x_boostp_remove),
 	.driver		= {
 		.name	= "wm831x-boostp",
+		.owner	= THIS_MODULE,
 	},
 };
 
@@ -979,6 +988,8 @@ static __devexit int wm831x_epe_remove(struct platform_device *pdev)
 {
 	struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
 
+	platform_set_drvdata(pdev, NULL);
+
 	regulator_unregister(dcdc->regulator);
 	kfree(dcdc);
 
@@ -990,6 +1001,7 @@ static struct platform_driver wm831x_epe_driver = {
 	.remove = __devexit_p(wm831x_epe_remove),
 	.driver		= {
 		.name	= "wm831x-epe",
+		.owner	= THIS_MODULE,
 	},
 };
 
diff --git a/drivers/regulator/wm831x-isink.c b/drivers/regulator/wm831x-isink.c
index 48857008758c..ca0f6b6c384b 100644
--- a/drivers/regulator/wm831x-isink.c
+++ b/drivers/regulator/wm831x-isink.c
@@ -222,6 +222,8 @@ static __devexit int wm831x_isink_remove(struct platform_device *pdev)
 	struct wm831x_isink *isink = platform_get_drvdata(pdev);
 	struct wm831x *wm831x = isink->wm831x;
 
+	platform_set_drvdata(pdev, NULL);
+
 	wm831x_free_irq(wm831x, platform_get_irq(pdev, 0), isink);
 
 	regulator_unregister(isink->regulator);
@@ -235,6 +237,7 @@ static struct platform_driver wm831x_isink_driver = {
 	.remove = __devexit_p(wm831x_isink_remove),
 	.driver		= {
 		.name	= "wm831x-isink",
+		.owner	= THIS_MODULE,
 	},
 };
 
diff --git a/drivers/regulator/wm831x-ldo.c b/drivers/regulator/wm831x-ldo.c
index 61e02ac2fda3..d2406c1519a1 100644
--- a/drivers/regulator/wm831x-ldo.c
+++ b/drivers/regulator/wm831x-ldo.c
@@ -371,6 +371,8 @@ static __devexit int wm831x_gp_ldo_remove(struct platform_device *pdev)
 	struct wm831x_ldo *ldo = platform_get_drvdata(pdev);
 	struct wm831x *wm831x = ldo->wm831x;
 
+	platform_set_drvdata(pdev, NULL);
+
 	wm831x_free_irq(wm831x, platform_get_irq_byname(pdev, "UV"), ldo);
 	regulator_unregister(ldo->regulator);
 	kfree(ldo);
@@ -383,6 +385,7 @@ static struct platform_driver wm831x_gp_ldo_driver = {
 	.remove = __devexit_p(wm831x_gp_ldo_remove),
 	.driver		= {
 		.name	= "wm831x-ldo",
+		.owner	= THIS_MODULE,
 	},
 };
 
@@ -640,6 +643,7 @@ static struct platform_driver wm831x_aldo_driver = {
 	.remove = __devexit_p(wm831x_aldo_remove),
 	.driver		= {
 		.name	= "wm831x-aldo",
+		.owner	= THIS_MODULE,
 	},
 };
 
@@ -811,6 +815,7 @@ static struct platform_driver wm831x_alive_ldo_driver = {
 	.remove = __devexit_p(wm831x_alive_ldo_remove),
 	.driver		= {
 		.name	= "wm831x-alive-ldo",
+		.owner	= THIS_MODULE,
 	},
 };