4.8-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx>
commit d63e51b31e0b655ed0f581b8a8fd4c4b4f8d1919 upstream.
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")
Suggested-by: Paul Mackerras <paulus@xxxxxxxxx>
Signed-off-by: Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Russell Currey <ruscur@xxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/platforms/powernv/eeh-powernv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -1538,7 +1538,7 @@ static int pnv_eeh_next_error(struct eeh
/* 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 ||
--
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