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Commit 63589e92 authored by Stephen Boyd's avatar Stephen Boyd Committed by Mike Turquette
Browse files

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: default avatarStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
parent 8f2c2db1

drivers/clk/clk.c

+6 −3
Original line number Diff line number Diff line
@@ -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);