clk: Add some more lockdep assertions

We don't check to make sure the enable_lock is held across
enable/disable and we don't check if the prepare_lock is held
across prepare/unprepare. Add some asserts to catch any future
locking problems.

Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/clk.c

···
 
 static void clk_core_unprepare(struct clk_core *core)
 {
+	lockdep_assert_held(&prepare_lock);
+
 	if (!core)
 		return;
 
···
 static int clk_core_prepare(struct clk_core *core)
 {
 	int ret = 0;
+
+	lockdep_assert_held(&prepare_lock);
 
 	if (!core)
 		return 0;
···
 
 static void clk_core_disable(struct clk_core *core)
 {
+	lockdep_assert_held(&enable_lock);
+
 	if (!core)
 		return;
 
···
 static int clk_core_enable(struct clk_core *core)
 {
 	int ret = 0;
+
+	lockdep_assert_held(&enable_lock);
 
 	if (!core)
 		return 0;