From: Marek Vasut <marek.vasut+renesas@xxxxxxxxx>
In case the "dma-ranges" DT property contains either too many ranges
or the range start address is unaligned in such a way that populating
the range into the controller requires multiple entries, a situation
may occur where all ranges cannot be loaded into the controller.
Currently, the driver refuses to probe in such a situation. Relax this
behavior, load as many ranges as possible and warn if some ranges do
not fit anymore.
Signed-off-by: Marek Vasut <marek.vasut+renesas@xxxxxxxxx>
Cc: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Cc: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Cc: linux-renesas-soc@xxxxxxxxxxxxxxx
To: linux-pci@xxxxxxxxxxxxxxx
---
drivers/pci/controller/pcie-rcar.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/controller/pcie-rcar.c b/drivers/pci/controller/pcie-rcar.c
index f6a669a9af41..938adff4148f 100644
--- a/drivers/pci/controller/pcie-rcar.c
+++ b/drivers/pci/controller/pcie-rcar.c
@@ -1069,8 +1069,9 @@ static int rcar_pcie_inbound_ranges(struct rcar_pcie *pcie,
idx += 2;
if (idx > MAX_NR_INBOUND_MAPS) {
- dev_err(pcie->dev, "Failed to map inbound regions!\n");
- return -EINVAL;
+ dev_warn(pcie->dev,
+ "Too many inbound regions, not all are mapped.\n");
+ break;
}
}
*index = idx;
--
2.20.1
