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

Rob Herring
2020-07-22T02:31:41Z

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@google.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Rob Herring <robh@kernel.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);