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can: mcp251x: get regulators optionally 

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;