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commitc7a5378a0fupstream. Driver returns -EOPNOTSUPPORTED on unsupported parameters case in set config. Upper level driver checks for -ENOTSUPP. Because of the return code mismatch, the ioctls from userspace fail. Resolve the issue by passing -ENOTSUPP during unsupported case. Fixes:7d3e4d807d("misc: microchip: pci1xxxx: load gpio driver for the gpio controller auxiliary device enumerated by the auxiliary bus driver.") Cc: stable <stable@kernel.org> Signed-off-by: Rengarajan S <rengarajan.s@microchip.com> Link: https://lore.kernel.org/r/20241205133626.1483499-3-rengarajan.s@microchip.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>