From: Johan Hovold johan@kernel.org Date: Mon, 5 Aug 2019 12:00:55 +0200
Fix two reset-gpio sanity checks which were never converted to use gpio_is_valid(), and make sure to use -EINVAL to indicate a missing reset line also for the UART-driver module parameter and for the USB driver.
This specifically prevents the UART and USB drivers from incidentally trying to request and use gpio 0, and also avoids triggering a WARN() in gpio_to_desc() during probe when no valid reset line has been specified.
Fixes: e33a3f84f88f ("NFC: nfcmrvl: allow gpio 0 for reset signalling") Cc: stable stable@vger.kernel.org # 4.13 Reported-by: syzbot+cf35b76f35e068a1107f@syzkaller.appspotmail.com Tested-by: syzbot+cf35b76f35e068a1107f@syzkaller.appspotmail.com Signed-off-by: Johan Hovold johan@kernel.org
Applied and queued up for -stable.