commit a63347251907d7f9fc2fc02e3b9898efda573c05
author Stephen Boyd <sboyd@codeaurora.org> Wed May 06 17:00:54 2015 -0700
committer Stephen Boyd <sboyd@codeaurora.org> Thu May 07 11:32:54 2015 -0700
tree 7ba9c5fbc3d328d0457469ada3988056bb42b3a6
parent 18e70efe3e2a27b53a63fb4454cc6c9e1dc0db49

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 <sboyd@codeaurora.org>

drivers/clk/clk.c

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 9e9d18c..659f2b0 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -543,6 +543,8 @@
 
 static void clk_core_unprepare(struct clk_core *core)
 {
+	lockdep_assert_held(&prepare_lock);
+
 	if (!core)
 		return;
 
@@ -589,6 +591,8 @@
 {
 	int ret = 0;
 
+	lockdep_assert_held(&prepare_lock);
+
 	if (!core)
 		return 0;
 
@@ -644,6 +648,8 @@
 
 static void clk_core_disable(struct clk_core *core)
 {
+	lockdep_assert_held(&enable_lock);
+
 	if (!core)
 		return;
 
@@ -692,6 +698,8 @@
 {
 	int ret = 0;
 
+	lockdep_assert_held(&enable_lock);
+
 	if (!core)
 		return 0;