Commit 94b28226 authored Jul 18, 2017 by Jonas Gorski Committed by Greg Ungerer Aug 28, 2017

m68k: allow NULL clock for clk_get_rate

Make the behaviour of clk_get_rate consistent with common clk's
clk_get_rate by accepting NULL clocks as parameter. Some device
drivers rely on this, and will cause an OOPS otherwise.

Fixes: facdf0ed ("m68knommu: introduce basic clk infrastructure")
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
Cc: linux-kernel@vger.kernel.org
Reported-by: Mathias Kresin <dev@kresin.me>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>

parent cc4a41fe

arch/m68k/coldfire/clk.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -121,6 +121,9 @@ EXPORT_SYMBOL(clk_put);

		unsigned long clk_get_rate(struct clk *clk)
		{
		if (!clk)
		return 0;

		return clk->rate;
		}
		EXPORT_SYMBOL(clk_get_rate);

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