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can: mcp251x: get regulators optionally

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The regulators power and transceiver are optional. If those are not
present, the pointer (or error pointer) is correctly handled by the
driver, hence we can use devm_regulator_get_optional safely, which
avoids regulators getting created.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Stefan Agner 2015-05-18 18:33:28 +02:00 committed by Marc Kleine-Budde
parent 25b401c181
commit 69da3f2ac5
1 changed files with 2 additions and 2 deletions
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4
drivers/net/can/spi/mcp251x.c
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@ -1086,8 +1086,8 @@ static int mcp251x_can_probe(struct spi_device *spi)
if (ret)
goto out_clk;
priv->power = devm_regulator_get(&spi->dev, "vdd");
priv->transceiver = devm_regulator_get(&spi->dev, "xceiver");
priv->power = devm_regulator_get_optional(&spi->dev, "vdd");
priv->transceiver = devm_regulator_get_optional(&spi->dev, "xceiver");
if ((PTR_ERR(priv->power) == -EPROBE_DEFER) ||
(PTR_ERR(priv->transceiver) == -EPROBE_DEFER)) {
ret = -EPROBE_DEFER;