From 9a3031dc3e7a5edfeb52ae8951f8bcd927351854 Mon Sep 17 00:00:00 2001 From: Lukasz Majewski Date: Tue, 18 Nov 2014 11:16:30 +0100 Subject: [PATCH] thermal:core:fix: Check return code of the ->get_max_state() callback The return code from ->get_max_state() callback was not checked during binding cooling device to thermal zone device. Signed-off-by: Lukasz Majewski Signed-off-by: Eduardo Valentin --- drivers/thermal/thermal_core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 43b90709585f..85679295bfd5 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -928,7 +928,7 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, struct thermal_zone_device *pos1; struct thermal_cooling_device *pos2; unsigned long max_state; - int result; + int result, ret; if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE)) return -EINVAL; @@ -945,7 +945,9 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, if (tz != pos1 || cdev != pos2) return -EINVAL; - cdev->ops->get_max_state(cdev, &max_state); + ret = cdev->ops->get_max_state(cdev, &max_state); + if (ret) + return ret; /* lower default 0, upper default max_state */ lower = lower == THERMAL_NO_LIMIT ? 0 : lower;