From 1debfb3315d95ab5ce328e307bd115b4400685fb Mon Sep 17 00:00:00 2001
From: Chase Douglas <chase.douglas@ubuntu.com>
Date: Mon, 30 Aug 2010 13:27:45 -0400
Subject: [PATCH] HID: debugfs: wake up reading tasks upon event
Some devices poke the hid core in a way that causes hid_debug_event to
be called, while never calling hid_dump_input. Without this wakeup
addition, tasks reading for hid events through debugfs may never see any
events. It may be that a well written driver doesn't cause this, but
then what's the point of debugfs?
Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---
drivers/hid/hid-debug.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c
index 850d02a7a925..adff4efdc169 100644
--- a/drivers/hid/hid-debug.c
+++ b/drivers/hid/hid-debug.c
@@ -570,6 +570,8 @@ void hid_debug_event(struct hid_device *hdev, char *buf)
buf[i];
list->tail = (list->tail + i) % HID_DEBUG_BUFSIZE;
}
+
+ wake_up_interruptible(&hdev->debug_wait);
}
EXPORT_SYMBOL_GPL(hid_debug_event);