m68k: let clk_disable() return immediately if clk is NULL
In many of clk_disable() implementations, it is a no-op for a NULL pointer input, but this is one of the exceptions. Making it treewide consistent will allow clock consumers to call clk_disable() without NULL pointer check. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
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@ -101,6 +101,10 @@ EXPORT_SYMBOL(clk_enable);
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void clk_disable(struct clk *clk)
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{
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unsigned long flags;
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if (!clk)
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return;
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spin_lock_irqsave(&clk_lock, flags);
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if ((--clk->enabled == 0) && clk->clk_ops)
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clk->clk_ops->disable(clk);
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