From 386787b1fcab2dd3d16ca3f46729aaafdef306e3 Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Tue, 18 Jul 2017 12:17:28 +0200 Subject: MIPS: Loongson 2F: 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, as some device drivers rely on this. 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: f8ede0f700f5 ("MIPS: Loongson 2F: Add CPU frequency scaling support") Reported-by: Mathias Kresin Signed-off-by: Jonas Gorski Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/16777/ Signed-off-by: Ralf Baechle --- arch/mips/loongson64/lemote-2f/clock.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/mips') diff --git a/arch/mips/loongson64/lemote-2f/clock.c b/arch/mips/loongson64/lemote-2f/clock.c index a78fb657068c..8281334df9c8 100644 --- a/arch/mips/loongson64/lemote-2f/clock.c +++ b/arch/mips/loongson64/lemote-2f/clock.c @@ -80,6 +80,9 @@ EXPORT_SYMBOL(clk_disable); unsigned long clk_get_rate(struct clk *clk) { + if (!clk) + return 0; + return (unsigned long)clk->rate; } EXPORT_SYMBOL(clk_get_rate); -- cgit v1.2.3