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Date: Tue, 13 Aug 2019 22:17:52 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Thomas Bogendoerfer <tbogendoerfer@...e.de>, Paul Burton <paul.burton@...s.com>, Ralf Baechle <ralf@...ux-mips.org>, James Hogan <jhogan@...nel.org>, linux-mips@...r.kernel.org, Sasha Levin <sashal@...nel.org> Subject: [PATCH AUTOSEL 4.14 03/44] MIPS: kernel: only use i8253 clocksource with periodic clockevent From: Thomas Bogendoerfer <tbogendoerfer@...e.de> [ Upstream commit a07e3324538a989b7cdbf2c679be6a7f9df2544f ] i8253 clocksource needs a free running timer. This could only be used, if i8253 clockevent is set up as periodic. Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@...e.de> Signed-off-by: Paul Burton <paul.burton@...s.com> Cc: Ralf Baechle <ralf@...ux-mips.org> Cc: James Hogan <jhogan@...nel.org> Cc: linux-mips@...r.kernel.org Cc: linux-kernel@...r.kernel.org Signed-off-by: Sasha Levin <sashal@...nel.org> --- arch/mips/kernel/i8253.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/mips/kernel/i8253.c b/arch/mips/kernel/i8253.c index 5f209f111e59e..df7ddd246eaac 100644 --- a/arch/mips/kernel/i8253.c +++ b/arch/mips/kernel/i8253.c @@ -32,7 +32,8 @@ void __init setup_pit_timer(void) static int __init init_pit_clocksource(void) { - if (num_possible_cpus() > 1) /* PIT does not scale! */ + if (num_possible_cpus() > 1 || /* PIT does not scale! */ + !clockevent_state_periodic(&i8253_clockevent)) return 0; return clocksource_i8253_init(); -- 2.20.1
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