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| author | Chase Douglas <chase.douglas@ubuntu.com> | 2010-08-30 13:27:45 -0400 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2010-09-08 12:04:03 +0200 |
| commit | 1debfb3315d95ab5ce328e307bd115b4400685fb (patch) | |
| tree | a95b278e7a86d1a2688ec67476558fcac744b2bd /drivers/hid/hid-debug.c | |
| parent | 816651a7d4a32664261e5f9f88ad0d558faed4cc (diff) | |
| download | lwn-1debfb3315d95ab5ce328e307bd115b4400685fb.tar.gz lwn-1debfb3315d95ab5ce328e307bd115b4400685fb.zip | |
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>
Diffstat (limited to 'drivers/hid/hid-debug.c')
| -rw-r--r-- | drivers/hid/hid-debug.c | 2 |
1 files changed, 2 insertions, 0 deletions
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); |