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HID: debugfs: wake up reading tasks upon event

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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>
This commit is contained in:
Chase Douglas 2010-08-30 13:27:45 -04:00 committed by Jiri Kosina
parent 816651a7d4
commit 1debfb3315
1 changed files with 2 additions and 0 deletions
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2
drivers/hid/hid-debug.c
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@ -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);