The return code from ->get_max_state() callback was not checked during
binding cooling device to thermal zone device.
Signed-off-by: Lukasz Majewski <l.majew...@samsung.com>
---
Changes for v2:
- It turned out that patches from 1 to 6 from v1 are not needed, since
they either already solve the problem (like imx_thermal.c) or not use
cpufreq as a thermal cooling device.
- The patch 7 from v1 is also not needed since this patch on error exits
this function without using max_state variable.
- In thermal driver probe the cpufreq_cooling_register() method presence
is crucial to evaluate if the thermal driver needs any actions with
-EPROBE_DEFER.
---
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 43b9070..8567929 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;
--
2.0.0.rc2
--
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