As the transcevier regulator is optional, this patch switches from devm_regulator_get() to devm_regulator_get_optional(). This gets rid of "using dummy regulator" warning message from the regulator core, if no regulator is available. Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20200922144429.2613631-8-mkl@xxxxxxxxxxxxxx --- drivers/net/can/flexcan.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index 06cddc468739..52b53ff223f4 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -1579,11 +1579,13 @@ static int flexcan_probe(struct platform_device *pdev) u8 clk_src = 1; u32 clock_freq = 0; - reg_xceiver = devm_regulator_get(&pdev->dev, "xceiver"); + reg_xceiver = devm_regulator_get_optional(&pdev->dev, "xceiver"); if (PTR_ERR(reg_xceiver) == -EPROBE_DEFER) return -EPROBE_DEFER; - else if (IS_ERR(reg_xceiver)) + else if (PTR_ERR(reg_xceiver) == -ENODEV) reg_xceiver = NULL; + else if (IS_ERR(reg_xceiver)) + return PTR_ERR(reg_xceiver); if (pdev->dev.of_node) { of_property_read_u32(pdev->dev.of_node, -- 2.28.0
