thermal: ti-soc-thermal: Ensure to compute thermal trend

Workaround to compute thermal trend even when update interval
is not set. This patch will ensure to compute the thermal trend
when bandgap counter delay is not set.

Signed-off-by: Ranganath Krishnan <ranganath@ti.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>

diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.c b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
index 9dfd471..74c0e34 100644 (file)
--- a/drivers/thermal/ti-soc-thermal/ti-bandgap.c
+++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
@@ -1020,9 +1020,13 @@ int ti_bandgap_get_trend(struct ti_bandgap *bgp, int id, int *trend)
 
        /* Fetch the update interval */
        ret = ti_bandgap_read_update_interval(bgp, id, &interval);
-       if (ret || !interval)
+       if (ret)
                goto unfreeze;
 
+       /* Set the interval to 1 ms if bandgap counter delay is not set */
+       if (interval == 0)
+               interval = 1;
+
        *trend = (t1 - t2) / interval;
 
        dev_dbg(bgp->dev, "The temperatures are t1 = %d and t2 = %d and trend =%d\n",