[PATCH 6.4 440/800] platform/x86: lenovo-yogabook: Reprobe devices on remove()

Greg Kroah-Hartman
2023-07-16T20:13:26Z

From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit 711bcc0cb34e96a60e88d7b0260862781de3e530 ]

Ensure that both the keyboard touchscreen and the digitizer have their
driver bound after remove(). Without this modprobing lenovo-yogabook-wmi
after a rmmod fails because lenovo-yogabook-wmi defers probing until
both devices have their driver bound.

Fixes: c0549b72d99d ("platform/x86: lenovo-yogabook-wmi: Add driver for Lenovo Yoga Book")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230430165807.472798-4-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/platform/x86/lenovo-yogabook-wmi.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/drivers/platform/x86/lenovo-yogabook-wmi.c b/drivers/platform/x86/lenovo-yogabook-wmi.c
index 3a6de4ab74a41..5948ffa74acd5 100644
--- a/drivers/platform/x86/lenovo-yogabook-wmi.c
+++ b/drivers/platform/x86/lenovo-yogabook-wmi.c
@@ -332,9 +332,20 @@ static int yogabook_wmi_probe(struct wmi_device *wdev, const void *context)
static void yogabook_wmi_remove(struct wmi_device *wdev)
{
struct yogabook_wmi *data = dev_get_drvdata(&wdev->dev);
+ int r = 0;

free_irq(data->backside_hall_irq, data);
cancel_work_sync(&data->work);
+
+ if (!test_bit(YB_KBD_IS_ON, &data->flags))
+ r |= device_reprobe(data->kbd_dev);
+
+ if (!test_bit(YB_DIGITIZER_IS_ON, &data->flags))
+ r |= device_reprobe(data->dig_dev);
+
+ if (r)
+ dev_warn(&wdev->dev, "Reprobe of devices failed\n");
+
put_device(data->dig_dev);
put_device(data->kbd_dev);
acpi_dev_put(data->dig_adev);
--
2.39.2