can: rcar_can: fix IRQ check

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commit 5e63e6baa1 upstream.

rcar_can_probe() regards 0 as a wrong IRQ #, despite platform_get_irq() that it
calls returns negative error code in that case. This leads to the following
being printed to the console when attempting to open the device:

error requesting interrupt fffffffa

because  rcar_can_open() calls request_irq() with a negative IRQ #, and that
function naturally fails with -EINVAL.

Check for the negative error codes instead and propagate them upstream instead
of just returning -ENODEV.

Fixes: fd1159318e ("can: add Renesas R-Car CAN driver")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

...

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Sergei Shtylyov 2015-06-20 03:32:46 +03:00 • committed by Luis Henriques

parent 16da885e5a

commit dfe8266d54

1 changed files with 2 additions and 1 deletions

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drivers/net/can/rcar_can.c

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