The mask parameter of syscfg property is mandatory for MP13 but
optional for all other cases.
The function should not return error code because for non-MP13
the missing syscfg phandle in DT is not considered an error.
So reset err to 0 in that case to support existing DTs without
syscfg phandle.
Fixes: 50bbc0393114 ("net: stmmac: dwmac-stm32: add management of stm32mp13 for stm32")
Signed-off-by: Christophe Roullier <christophe.roullier@xxxxxxxxxxx>
Reviewed-by: Marek Vasut <marex@xxxxxxx>
Tested-by: Mark Brown <broonie@xxxxxxxxxx>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
index d6a268237ca1..c1732955a697 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
@@ -435,10 +435,12 @@ static int stm32_dwmac_parse_data(struct stm32_dwmac *dwmac,
dwmac->mode_mask = SYSCFG_MP1_ETH_MASK;
err = of_property_read_u32_index(np, "st,syscon", 2, &dwmac->mode_mask);
if (err) {
- if (dwmac->ops->is_mp13)
+ if (dwmac->ops->is_mp13) {
dev_err(dev, "Sysconfig register mask must be set (%d)\n", err);
- else
+ } else {
dev_dbg(dev, "Warning sysconfig register mask not set\n");
+ err = 0;
+ }
}
return err;
--
2.25.1
