From 94b282267c2f3af725b154c91275ed374c1f11de Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Tue, 18 Jul 2017 12:17:25 +0200 Subject: [PATCH] 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: facdf0ed4f59 ("m68knommu: introduce basic clk infrastructure") Cc: Greg Ungerer Cc: Geert Uytterhoeven Cc: linux-m68k@lists.linux-m68k.org Cc: linux-kernel@vger.kernel.org Reported-by: Mathias Kresin Signed-off-by: Jonas Gorski Signed-off-by: Greg Ungerer --- arch/m68k/coldfire/clk.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/m68k/coldfire/clk.c b/arch/m68k/coldfire/clk.c index 1e3c7e9193d1..856069a3196d 100644 --- a/arch/m68k/coldfire/clk.c +++ b/arch/m68k/coldfire/clk.c @@ -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); -- GitLab