From d63e51b31e0b655ed0f581b8a8fd4c4b4f8d1919 Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Tue, 2 Aug 2016 14:10:29 +1000 Subject: [PATCH] powerpc/powernv: Pass CPU-endian PE number to opal_pci_eeh_freeze_clear() The PE number (@frozen_pe_no), filled by opal_pci_next_error() is in big-endian format. It should be converted to CPU-endian before it is passed to opal_pci_eeh_freeze_clear() when clearing the frozen state if the PE is invalid one. As Michael Ellerman pointed out, the issue is also detected by sparse: eeh-powernv.c:1541:41: warning: incorrect type in argument 2 (different base types) This passes CPU-endian PE number to opal_pci_eeh_freeze_clear() and it should be part of commit <0f36db77643b> ("powerpc/eeh: Fix wrong printed PE number"), which was merged to 4.3 kernel. Fixes: 71b540adffd9 ("powerpc/powernv: Don't escalate non-existing frozen PE") Cc: stable@vger.kernel.org # v4.3+ Suggested-by: Paul Mackerras Signed-off-by: Gavin Shan Reviewed-by: Russell Currey Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/powernv/eeh-powernv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c index 995947d..1596a7e 100644 --- a/arch/powerpc/platforms/powernv/eeh-powernv.c +++ b/arch/powerpc/platforms/powernv/eeh-powernv.c @@ -1546,7 +1546,7 @@ static int pnv_eeh_next_error(struct eeh_pe **pe) /* Try best to clear it */ opal_pci_eeh_freeze_clear(phb->opal_id, - frozen_pe_no, + be64_to_cpu(frozen_pe_no), OPAL_EEH_ACTION_CLEAR_FREEZE_ALL); ret = EEH_NEXT_ERR_NONE; } else if ((*pe)->state & EEH_PE_ISOLATED || -- 2.7.4