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 <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index cdd5fa942aed..272f6566d790 100644
--- 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);