提交 63589e92 编写于 作者: S Stephen Boyd 提交者: Mike Turquette

clk: Ignore error and NULL pointers passed to clk_{unprepare, disable}()

This simplifies error paths in drivers that use optional clocks
by allowing the NULL or error pointer to be passed
unconditionally.
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NMike Turquette <mturquette@linaro.org>
上级 8f2c2db1
......@@ -822,6 +822,9 @@ void __clk_unprepare(struct clk *clk)
*/
void clk_unprepare(struct clk *clk)
{
if (IS_ERR_OR_NULL(clk))
return;
clk_prepare_lock();
__clk_unprepare(clk);
clk_prepare_unlock();
......@@ -883,9 +886,6 @@ static void __clk_disable(struct clk *clk)
if (!clk)
return;
if (WARN_ON(IS_ERR(clk)))
return;
if (WARN_ON(clk->enable_count == 0))
return;
......@@ -914,6 +914,9 @@ void clk_disable(struct clk *clk)
{
unsigned long flags;
if (IS_ERR_OR_NULL(clk))
return;
flags = clk_enable_lock();
__clk_disable(clk);
clk_enable_unlock(flags);
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册