firmware: arm_ffa: Ensure drivers provide a probe function

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The bus probe callback calls the driver callback without further
checking. Better be safe than sorry and refuse registration of a driver
without a probe function to prevent a NULL pointer exception.

Link: https://lore.kernel.org/r/20210621201652.127611-1-u.kleine-koenig@pengutronix.de
Fixes: e781858488 ("firmware: arm_ffa: Add initial FFA bus support for device enumeration")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

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Uwe Kleine-König 2021-06-21 22:16:51 +02:00 • committed by Sudeep Holla

parent e73f0f0ee7

commit 9274307146

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drivers/firmware/arm_ffa/bus.c

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