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authorPeter Zijlstra <peterz@infradead.org>2008-04-18 08:25:38 +0400
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2008-04-24 21:25:13 +0400
commit8fd76c4506817a93718fab0d6b3a55b9becc9f2c (patch)
tree897f0a659dfa193230be6590443c3d675ba8c244 /drivers/macintosh
parent8c6deb9c8fd29feaeae3aae500608beac777ea9e (diff)
downloadlinux-8fd76c4506817a93718fab0d6b3a55b9becc9f2c.tar.xz
Input: mac_hid - add lockdep annotation to emumousebtn
The mouse button emulation calls input device methods from an input device. This causes funny lock nesting which is harmless as each device has its own locks. Give the nesting device its own lock classes so that lockdep will not consider them the same. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/macintosh')
-rw-r--r--drivers/macintosh/mac_hid.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/macintosh/mac_hid.c b/drivers/macintosh/mac_hid.c
index 89302309da92..f972ff377b63 100644
--- a/drivers/macintosh/mac_hid.c
+++ b/drivers/macintosh/mac_hid.c
@@ -103,6 +103,9 @@ int mac_hid_mouse_emulate_buttons(int caller, unsigned int keycode, int down)
return 0;
}
+static struct lock_class_key emumousebtn_event_class;
+static struct lock_class_key emumousebtn_mutex_class;
+
static int emumousebtn_input_register(void)
{
int ret;
@@ -111,6 +114,9 @@ static int emumousebtn_input_register(void)
if (!emumousebtn)
return -ENOMEM;
+ lockdep_set_class(emumousebtn->event_lock, &emumousebtn_event_class);
+ lockdep_set_class(emumousebtn->mutex, &emumousebtn_mutex_class);
+
emumousebtn->name = "Macintosh mouse button emulation";
emumousebtn->id.bustype = BUS_ADB;
emumousebtn->id.vendor = 0x0001;