Messages in this thread Patch in this message |  | | From | David Hildenbrand <> | Subject | [PATCH RFCv2 4/6] powerpc/powernv: hold device_hotplug_lock when calling device_online() | Date | Tue, 21 Aug 2018 12:44:16 +0200 |
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device_online() should be called with device_hotplug_lock() held.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Rashmica Gupta <rashmica.g@gmail.com> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Michael Neuling <mikey@neuling.org> Signed-off-by: David Hildenbrand <david@redhat.com> --- 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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