[PATCH 3/3] gpio: virtuser: lock device when calling device_is_bound()

[Bartosz Golaszewski]

The kerneldoc for device_is_bound() says it must be called with the
device lock taken. Add missing synchronization to this driver.

Fixes: c3e2a8aef28c ("gpio: virtuser: stop using dev-sync-probe")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>
---
 drivers/gpio/gpio-virtuser.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-virtuser.c b/drivers/gpio/gpio-virtuser.c
index fe0eac920ced323926b2bc83ca0a2eb5f85c2154..128520d340d46cbaa36b492cbdcb996bade93d77 100644
--- a/drivers/gpio/gpio-virtuser.c
+++ b/drivers/gpio/gpio-virtuser.c
@@ -1477,9 +1477,12 @@ gpio_virtuser_device_activate(struct gpio_virtuser_device *dev)
 	}
 
 	wait_for_device_probe();
-	if (!device_is_bound(&pdev->dev)) {
-		ret = -ENXIO;
-		goto err_unregister_pdev;
+
+	scoped_guard(device, &pdev->dev) {
+		if (!device_is_bound(&pdev->dev)) {
+			ret = -ENXIO;
+			goto err_unregister_pdev;
+		}
 	}
 
 	dev->pdev = pdev;

-- 
2.47.3