Wind River Support Network

Description

In the Linux kernel, the following vulnerability has been resolved:[EOL][EOL]pinctrl: check the return value of pinmux_ops::get_function_name()[EOL][EOL]While the API contract in docs doesn't specify it explicitly, the[EOL]generic implementation of the get_function_name() callback from struct[EOL]pinmux_ops - pinmux_generic_get_function_name() - can fail and return[EOL]NULL. This is already checked in pinmux_check_ops() so add a similar[EOL]check in pinmux_func_name_to_selector() instead of passing the returned[EOL]pointer right down to strcmp() where the NULL can get dereferenced. This[EOL]is normal operation when adding new pinfunctions.