HID: uHID: fix excepted report type

When uhid_get_report() or uhid_set_report() are called, they emit on the
char device a UHID_GET_REPORT or UHID_SET_REPORT message. Then, the
protocol says that the user space asnwers with UHID_GET_REPORT_REPLY
or UHID_SET_REPORT_REPLY.

Unfortunatelly, the current code waits for an event of type UHID_GET_REPORT
or UHID_SET_REPORT instead of the reply one.
Add 1 to UHID_GET_REPORT or UHID_SET_REPORT to actually wait for the
reply, and validate the reply.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
index f6ec5ea..e094c57 100644 (file)
--- a/drivers/hid/uhid.c
+++ b/drivers/hid/uhid.c
@@ -154,7 +154,7 @@ static int __uhid_report_queue_and_wait(struct uhid_device *uhid,
 
        spin_lock_irqsave(&uhid->qlock, flags);
        *report_id = ++uhid->report_id;
-       uhid->report_type = ev->type;
+       uhid->report_type = ev->type + 1;
        uhid->report_running = true;
        uhid_queue(uhid, ev);
        spin_unlock_irqrestore(&uhid->qlock, flags);