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Use the helper function devm_kmemdup() rather than duplicating its implementation, which helps to enhance code readability. Signed-off-by: Li Zetao <lizetao1@huawei.com> Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Link: https://lore.kernel.org/r/20230810115049.2104099-1-lizetao1@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>