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firmware: arm_scmi: replace of_match_device->data with of_device_get_match_data()

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of_match_device can return NULL if no matching device is found though
it's highly unlikely to happen in scmi_probe as it's called only if
a valid match is found.

However we can use of_device_get_match_data() instead of
of_match_device()->data to handle NULL pointer checks and return -EINVAL
in such a scenario.

Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Aditya Pakki 2019-03-22 16:55:03 -05:00 committed by Sudeep Holla
parent fa7fe29a64
commit d9350f21e5
1 changed files with 3 additions and 1 deletions
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4
drivers/firmware/arm_scmi/driver.c
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@ -796,7 +796,9 @@ static int scmi_probe(struct platform_device *pdev)
return -EINVAL;
}
desc = of_match_device(scmi_of_match, dev)->data;
desc = of_device_get_match_data(dev);
if (!desc)
return -EINVAL;
info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
if (!info)