diff options
| author | Thomas Bogendoerfer <tbogendoerfer@suse.de> | 2019-05-13 13:47:25 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-06 10:18:04 +0200 |
| commit | afbd69c7c6ce24af5a8165da74b41a7fcb00d0ef (patch) | |
| tree | c08042238196fce8750e2a5bea7ee71cf6a2dd5f /arch/mips/kernel/i8253.c | |
| parent | 4322f947c6f5a28cfb388a919a668ddf983080b4 (diff) | |
MIPS: kernel: only use i8253 clocksource with periodic clockevent
[ 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>
Diffstat (limited to 'arch/mips/kernel/i8253.c')
| -rw-r--r-- | arch/mips/kernel/i8253.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/mips/kernel/i8253.c b/arch/mips/kernel/i8253.c index c5bc344fc745..73039746ae36 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(); |