[PATCH RFC v4 21/21] powerpc/pci: Fix crash with enabled movable BARs

[Sergey Miroshnichenko]

Check a resource for the UNSET flags.

Signed-off-by: Sergey Miroshnichenko <s.miroshniche...@yadro.com>
---
 arch/powerpc/platforms/powernv/pci-ioda.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c 
b/arch/powerpc/platforms/powernv/pci-ioda.c
index fa6af52b5219..353b36727f6a 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -2977,7 +2977,8 @@ static void pnv_ioda_setup_pe_res(struct pnv_ioda_pe *pe,
        int index;
        int64_t rc;
 
-       if (!res || !res->flags || res->start > res->end)
+       if (!res || !res->flags || res->start > res->end ||
+           (res->flags & IORESOURCE_UNSET))
                return;
 
        if (res->flags & IORESOURCE_IO) {
-- 
2.20.1