device_online() should be called with device_hotplug_lock() held.
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Rashmica Gupta <[email protected]>
Cc: Balbir Singh <[email protected]>
Cc: Michael Neuling <[email protected]>
Reviewed-by: Pavel Tatashin <[email protected]>
Signed-off-by: David Hildenbrand <[email protected]>
---
arch/powerpc/platforms/powernv/memtrace.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/platforms/powernv/memtrace.c
b/arch/powerpc/platforms/powernv/memtrace.c
index 8f1cd4f3bfd5..ef7181d4fe68 100644
--- a/arch/powerpc/platforms/powernv/memtrace.c
+++ b/arch/powerpc/platforms/powernv/memtrace.c
@@ -229,9 +229,11 @@ static int memtrace_online(void)
* we need to online the memory ourselves.
*/
if (!memhp_auto_online) {
+ lock_device_hotplug();
walk_memory_range(PFN_DOWN(ent->start),
PFN_UP(ent->start + ent->size - 1),
NULL, online_mem_block);
+ unlock_device_hotplug();
}
/*
--
2.17.1
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