tree fcf0ccdd9fbbed3ab33fca17c9b534905e5159cf
parent 7ac7038ab36feff54e882422de0f3127db094565
author Dario Binacchi <dariobin@libero.it> 1619109358 +0200
committer Tom Rini <trini@konsulko.com> 1619525130 -0400

pinctrl: single: check function mask to be non-zero

Otherwise it can generate a division by zero, which has an undefined
behavior.

Signed-off-by: Dario Binacchi <dariobin@libero.it>