Commit 8642b31b authored by Helge Deller's avatar Helge Deller

parisc: Fix detection of nonsynchronous cr16 cycle counters

For CPUs which have an unknown or invalid CPU location (physical location)
assume that their cycle counters aren't syncronized across CPUs.
Signed-off-by: default avatarHelge Deller <>
Fixes: c8c37359 ("parisc: Enhance detection of synchronous cr16 clocksources")
Cc: # 4.13+
Signed-off-by: default avatarHelge Deller <>
parent 2aae008c
......@@ -253,7 +253,10 @@ static int __init init_cr16_clocksource(void)
cpu0_loc = per_cpu(cpu_data, 0).cpu_loc;
for_each_online_cpu(cpu) {
if (cpu0_loc == per_cpu(cpu_data, cpu).cpu_loc)
if (cpu == 0)
if ((cpu0_loc != 0) &&
(cpu0_loc == per_cpu(cpu_data, cpu).cpu_loc))
continue; = "cr16_unstable";
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