From 63589e92c2d975cc63222e5bd4a9a1fa2a1187ac Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Wed, 26 Mar 2014 16:06:37 -0700 Subject: [PATCH] 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: Stephen Boyd Signed-off-by: Mike Turquette --- drivers/clk/clk.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 3c02be74fd7c..4d562206d62f 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -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); -- 2.34.1