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Use IS_ERR_OR_NULL macro to use the same code on kernel 4.19 as well as 5.4. Signed-off-by: David Bauer <mail@david-bauer.net>
Use IS_ERR_OR_NULL macro to use the same code on kernel 4.19 as well as 5.4. Signed-off-by: David Bauer <mail@david-bauer.net>