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can: tcan4x5x: fix power regulator retrieval during probe

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commit db22720545207f734aaa9d9f71637bfc8b0155e0 upstream.

Fixes the power regulator retrieval in tcan4x5x_can_probe() by ensuring
the regulator pointer is not set to NULL in the successful return from
devm_regulator_get_optional().

Fixes: 3814ca3a10 ("can: tcan4x5x: tcan4x5x_can_probe(): turn on the power before parsing the config")
Signed-off-by: Brett Werling <brett.werling@garmin.com>
Link: https://patch.msgid.link/20250612191825.3646364-1-brett.werling@garmin.com
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Brett Werling
2025-06-12 14:18:25 -05:00
committed by Greg Kroah-Hartman
parent d5d4be47e0
commit 636391e8c9
1 changed files with 5 additions and 4 deletions
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9
drivers/net/can/m_can/tcan4x5x-core.c
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@@ -385,10 +385,11 @@ static int tcan4x5x_can_probe(struct spi_device *spi)
priv = cdev_to_priv(mcan_class);
priv->power = devm_regulator_get_optional(&spi->dev, "vsup");
if (PTR_ERR(priv->power) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
goto out_m_can_class_free_dev;
} else {
if (IS_ERR(priv->power)) {
if (PTR_ERR(priv->power) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
goto out_m_can_class_free_dev;
}
priv->power = NULL;
}