mirror of
https://github.com/raspberrypi/linux.git
synced 2025-12-27 12:32:50 +00:00
6938a9da7f
commit7544fd7f38upstream. A bit unexpectedly (but still documented), request_module may return a positive value, in case of a modprobe error. This is currently causing issues in the devfreq framework. When a request_module exits with a positive value, we currently return that via ERR_PTR. However, because the value is positive, it's not a ERR_VALUE proper, and is therefore treated as a valid struct devfreq_governor pointer, leading to a kernel oops. Fix this by returning -EINVAL if request_module returns a positive value. Fixes:b53b012805("PM / devfreq: Fix static checker warning in try_then_request_governor") Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Cc: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>