| From | Ben Hutchings <> | Date | Wed, 22 Nov 2017 01:58:13 +0000 | Subject | [PATCH 3.16 090/133] MIPS: Loongson 2F: allow NULL clock for clk_get_rate |
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3.16.51-rc1 review patch. If anyone has any objections, please let me know.
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From: Jonas Gorski <jonas.gorski@gmail.com>
commit 386787b1fcab2dd3d16ca3f46729aaafdef306e3 upstream.
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 <dev@kresin.me> Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> 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 <ralf@linux-mips.org> [bwh: Backported to 3.16: adjust filename] Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- arch/mips/loongson/lemote-2f/clock.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/arch/mips/loongson/lemote-2f/clock.c +++ b/arch/mips/loongson/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);
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