[PATCH 16/19] PCI: of: Reduce missing non-prefetchable memory region to a warning

[Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>]

The pci-rcar-gen2 controller requires only a prefetchable memory region,
and the error prevents using pci_parse_request_of_pci_ranges() for it.
Let's reduce this to just a warning message so this function can be used
for pci-rcar-gen2.

Cc: Bjorn Helgaas <bhelgaas-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org>
Signed-off-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
 drivers/pci/of.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/of.c b/drivers/pci/of.c
index 27839cd2459f..cfb940c8b399 100644
--- a/drivers/pci/of.c
+++ b/drivers/pci/of.c
@@ -564,11 +564,10 @@ int pci_parse_request_of_pci_ranges(struct device *dev,
 		}
 	}
 
-	if (res_valid)
-		return 0;
+	if (!res_valid)
+		dev_warn(dev, "non-prefetchable memory resource required\n");
 
-	dev_err(dev, "non-prefetchable memory resource required\n");
-	err = -EINVAL;
+	return 0;
 
  out_release_res:
 	pci_free_resource_list(resources);
-- 
2.25.1