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 9dfd47196e63d2ff05c29ecef6ce6a3425b0e63c..74c0e3474d6e935a7d16bf29e6304e59b9a01a1f 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",