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
---
V2: Update on top of 1/3
V3: No change
---
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 56a6433eb70b..e2735005ffd3 100644
--- a/drivers/pci/controller/pcie-rcar.c
+++ b/drivers/pci/controller/pcie-rcar.c
@@ -1049,8 +1049,9 @@ static int rcar_pcie_inbound_ranges(struct rcar_pcie *pcie,
while (cpu_addr < cpu_end) {
if (idx >= MAX_NR_INBOUND_MAPS - 1) {
- 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;
}
/*
* Set up 64-bit inbound regions as the range parser doesn't
--
2.20.1
