[PATCH] platform/x86: wmi: Unlock on error in wmi_ioctl()

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We need to drop a lock if try_module_get() fails.

Fixes: 44b6b7661132 ("platform/x86: wmi: create userspace interface for drivers")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 8c31ed4f0e1b..791449a2370f 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -868,8 +868,10 @@ static long wmi_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 	/* let the driver do any filtering and do the call */
 	wdriver = container_of(wblock->dev.dev.driver,
 			       struct wmi_driver, driver);
-	if (!try_module_get(wdriver->driver.owner))
-		return -EBUSY;
+	if (!try_module_get(wdriver->driver.owner)) {
+		ret = -EBUSY;
+		goto out_ioctl;
+	}
 	ret = wdriver->filter_callback(&wblock->dev, cmd, buf);
 	module_put(wdriver->driver.owner);
 	if (ret)



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