powerpc/powernv: Fix M64 resource name in /proc/iomem

The name of PCI root bus's M64 resource isn't initialized properly.
When dumping "/proc/iomem", "<BAD>" is seen for those M64 resources
on PCI root buses.

   ~# cat /proc/iomem | grep -e "BAD"
   3b0000000000-3b0fefffffff : <BAD>
   3b1000000000-3b1fefffffff : <BAD>
   3c0000000000-3c0fefffffff : <BAD>
   3c1000000000-3c1fefffffff : <BAD>
   3c2000000000-3c2fefffffff : <BAD>

This fixes the issue by setting the name of PCI root bus's M64
resource to that of PHB's device node full name. With the patch,
no "<BAD>" is seen from "/proc/iomem".

Signed-off-by: Gavin Shan <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index cdd5fa942aedc4fa780b0c7d80438b11813ad401..272f6566d790cddc175673b0bc97f1913540cc03 100644 (file)
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -357,6 +357,7 @@ static void __init pnv_ioda_parse_m64_window(struct pnv_phb *phb)
        }
 
        res = &hose->mem_resources[1];
+       res->name = dn->full_name;
        res->start = of_translate_address(dn, r + 2);
        res->end = res->start + of_read_number(r + 4, 2) - 1;
        res->flags = (IORESOURCE_MEM | IORESOURCE_MEM_64 | IORESOURCE_PREFETCH);