can: flexcan: Deferred on Regulator return EPROBE_DEFER
authorAndreas Werner <kernel@andy89.org>
Sun, 22 Mar 2015 16:35:52 +0000 (17:35 +0100)
committerMarc Kleine-Budde <mkl@pengutronix.de>
Sun, 22 Mar 2015 18:20:10 +0000 (19:20 +0100)
commit555828ef45f825d6ee06559f0304163550eed380
tree484cc1b0e4cd6a4c4ceea5f08e365c93dd232e94
parent258ce80e19211f06c97a562a71308ec21a9ab98f
can: flexcan: Deferred on Regulator return EPROBE_DEFER

Return EPROBE_DEFER if Regulator returns EPROBE_DEFER

If the Flexcan driver is built into kernel and a regulator is used to
enable the CAN transceiver, the Flexcan driver may not use the regulator.

When initializing the Flexcan device with a regulator defined in the device
tree, but not initialized, the regulator subsystem returns EPROBE_DEFER, hence
the Flexcan init fails.

The solution for this is to return EPROBE_DEFER if regulator is not initialized
and wait until the regulator is initialized.

Signed-off-by: Andreas Werner <kernel@andy89.org>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
drivers/net/can/flexcan.c