From: Rob Herring <robh@kernel.org>
Date: Wed, 22 Jul 2020 02:25:11 +0000 (-0600)
Subject: PCI: of: Reduce missing non-prefetchable memory region to a warning
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4cb18d13b01142d54a5fab66a2e9f562c08bc23b;p=linux.git

PCI: of: Reduce missing non-prefetchable memory region to a warning

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.

Link: https://lore.kernel.org/r/20200722022514.1283916-17-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
---

diff --git a/drivers/pci/of.c b/drivers/pci/of.c
index 27839cd2459f6..cfb940c8b3995 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);