thermal: Fix test of unsigned in thermal_cooling_device_cur_state_store()

state is unsigned long so the test did not work.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index 6f8d8f971212..800e0c56cc83 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -374,7 +374,7 @@ thermal_cooling_device_cur_state_store(struct device *dev,
         if (!sscanf(buf, "%ld\n", &state))
                 return -EINVAL;
 
-        if (state < 0)
+        if ((long)state < 0)
                 return -EINVAL;
 
         result = cdev->ops->set_cur_state(cdev, state);