Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.4 02/28] MIPS: kernel: only use i8253 clocksource with periodic clockevent | Date | Tue, 13 Aug 2019 22:25:24 -0400 |
| |
From: Thomas Bogendoerfer <tbogendoerfer@suse.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@suse.de> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Sasha Levin <sashal@kernel.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 c5bc344fc745c..73039746ae364 100644 --- a/arch/mips/kernel/i8253.c +++ b/arch/mips/kernel/i8253.c @@ -31,7 +31,8 @@ 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
| |