From 484278a79fa5824c902a94a6bc18a8046ea9b952 Mon Sep 17 00:00:00 2001 From: Sam Bobroff Date: Wed, 12 Sep 2018 11:23:22 +1000 Subject: [PATCH] powerpc/eeh: Fix use of EEH_PE_KEEP on wrong field [ Upstream commit 473af09b56dc4be68e4af33220ceca6be67aa60d ] eeh_add_to_parent_pe() sometimes removes the EEH_PE_KEEP flag, but it incorrectly removes it from pe->type, instead of pe->state. However, rather than clearing it from the correct field, remove it. Inspection of the code shows that it can't ever have had any effect (even if it had been cleared from the correct field), because the field is never tested after it is cleared by the statement in question. The clear statement was added by commit 807a827d4e74 ("powerpc/eeh: Keep PE during hotplug"), but it didn't explain why it was necessary. Signed-off-by: Sam Bobroff Signed-off-by: Michael Ellerman Signed-off-by: Sasha Levin --- arch/powerpc/kernel/eeh_pe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c index 8545a9523b9b..7339ca4fdc19 100644 --- a/arch/powerpc/kernel/eeh_pe.c +++ b/arch/powerpc/kernel/eeh_pe.c @@ -381,7 +381,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev) while (parent) { if (!(parent->type & EEH_PE_INVALID)) break; - parent->type &= ~(EEH_PE_INVALID | EEH_PE_KEEP); + parent->type &= ~EEH_PE_INVALID; parent = parent->parent; } -- 2.20.1