[PATCH] HID: roccat: Fixing race condition on initialization

[Stefan Achatz]

Fixed raced condition where event occurs before drvdata is set.

Signed-off-by: Stefan Achatz <erazor_de@xxxxxxxxxxxxxxxxxxxxx>
---
 drivers/hid/hid-roccat-kone.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/hid/hid-roccat-kone.c b/drivers/hid/hid-roccat-kone.c
index f776957..cfeab56 100644
--- a/drivers/hid/hid-roccat-kone.c
+++ b/drivers/hid/hid-roccat-kone.c
@@ -966,6 +966,10 @@ static int kone_raw_event(struct hid_device *hdev, struct hid_report *report,
 	struct kone_device *kone = hid_get_drvdata(hdev);
 	struct kone_mouse_event *event = (struct kone_mouse_event *)data;
 
+	/* possible race condition on initialization */
+	if (!kone)
+		return 0;
+
 	/* keyboard events are always processed by default handler */
 	if (size != sizeof(struct kone_mouse_event))
 		return 0;
-- 
1.7.2.2



--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/