can: xilinx_can: xcan_probe(): check for error irq

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For the possible failure of the platform_get_irq(), the returned irq
could be error number and will finally cause the failure of the
request_irq().

Consider that platform_get_irq() can now in certain cases return
-EPROBE_DEFER, and the consequences of letting request_irq()
effectively convert that into -EINVAL, even at probe time rather than
later on. So it might be better to check just now.

Fixes: b1201e44f5 ("can: xilinx CAN controller support")
Link: https://lore.kernel.org/all/20211224021324.1447494-1-jiasheng@iscas.ac.cn
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

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Jiasheng Jiang 2021-12-24 10:13:24 +08:00 • committed by Marc Kleine-Budde

parent 370d988cc5

commit c6564c13da

1 changed files with 6 additions and 1 deletions

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drivers/net/can/xilinx_can.c

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