[RFC v2 01/13] usb: misc: usb3503: Clean up on driver unbind

Krzysztof Kozlowski
2016-05-05T12:34:14Z

The driver should clean up after itself by unpreparing the clock when it
is unbound.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
---
drivers/usb/misc/usb3503.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)

diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c
index b45cb77c0744..a464636675a6 100644
--- a/drivers/usb/misc/usb3503.c
+++ b/drivers/usb/misc/usb3503.c
@@ -330,6 +330,19 @@ static int usb3503_i2c_probe(struct i2c_client *i2c,
return usb3503_probe(hub);
}

+static int usb3503_i2c_remove(struct i2c_client *i2c)
+{
+ struct usb3503 *hub;
+
+ hub = i2c_get_clientdata(i2c);
+ if (hub) {
+ if (hub->clk)
+ clk_disable_unprepare(hub->clk);
+ }
+
+ return 0;
+}
+
static int usb3503_platform_probe(struct platform_device *pdev)
{
struct usb3503 *hub;
@@ -342,6 +355,19 @@ static int usb3503_platform_probe(struct platform_device *pdev)
return usb3503_probe(hub);
}

+static int usb3503_platform_remove(struct platform_device *pdev)
+{
+ struct usb3503 *hub;
+
+ hub = platform_get_drvdata(pdev);
+ if (hub) {
+ if (hub->clk)
+ clk_disable_unprepare(hub->clk);
+ }
+
+ return 0;
+}
+
#ifdef CONFIG_PM_SLEEP
static int usb3503_i2c_suspend(struct device *dev)
{
@@ -395,6 +421,7 @@ static struct i2c_driver usb3503_i2c_driver = {
.of_match_table = of_match_ptr(usb3503_of_match),
},
.probe = usb3503_i2c_probe,
+ .remove = usb3503_i2c_remove,
.id_table = usb3503_id,
};

@@ -404,6 +431,7 @@ static struct platform_driver usb3503_platform_driver = {
.of_match_table = of_match_ptr(usb3503_of_match),
},
.probe = usb3503_platform_probe,
+ .remove = usb3503_platform_remove,
};

static int __init usb3503_init(void)
--
1.9.1