From: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Date: Wed, 29 Mar 2017 18:43:53 +0000 (+0200)
Subject: thermal: rcar_gen3_thermal: record and check number of TSCs found
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=97dad1f1d2b3f2a2a77551849357b7ac38b0b6ff;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

thermal: rcar_gen3_thermal: record and check number of TSCs found

Record how many TSCs are found in struct rcar_gen3_thermal_priv, this is
needed to be able to add hardware interrupts for trip points later. Also
add a check to make sure at least one TSC is found.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
---

diff --git a/drivers/thermal/rcar_gen3_thermal.c b/drivers/thermal/rcar_gen3_thermal.c
index 9b6bc03dd142..4a08b35533dc 100644
--- a/drivers/thermal/rcar_gen3_thermal.c
+++ b/drivers/thermal/rcar_gen3_thermal.c
@@ -75,6 +75,7 @@ struct rcar_gen3_thermal_tsc {
 
 struct rcar_gen3_thermal_priv {
 	struct rcar_gen3_thermal_tsc *tscs[TSC_MAX_NUM];
+	unsigned int num_tscs;
 };
 
 struct rcar_gen3_thermal_data {
@@ -307,6 +308,13 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
 		tsc->zone = zone;
 	}
 
+	priv->num_tscs = i;
+
+	if (!priv->num_tscs) {
+		ret = -ENODEV;
+		goto error_unregister;
+	}
+
 	return 0;
 
 error_unregister: