linux-kernel - [PATCH] hwmon: occ: Fix power sensor indexing

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Date:   Tue, 19 Mar 2019 16:01:58 -0500
From:   Eddie James <eajames@...ux.ibm.com>
To:     linux-hwmon@...r.kernel.org
Cc:     linux@...ck-us.net, jdelvare@...e.com,
        linux-kernel@...r.kernel.org, Eddie James <eajames@...ux.ibm.com>
Subject: [PATCH] hwmon: occ: Fix power sensor indexing

In the case of power sensor version 0xA0, the sensor indexing overlapped
with the "caps" power sensors, resulting in probe failure and kernel
warnings. Fix this by specifying the next index for each power sensor
version.

Fixes: 54076cb ("hwmon (occ): Add sensor attributes and register ...")
Signed-off-by: Eddie James <eajames@...ux.ibm.com>
---
 drivers/hwmon/occ/common.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/occ/common.c b/drivers/hwmon/occ/common.c
index 391118c..c888f4a 100644
--- a/drivers/hwmon/occ/common.c
+++ b/drivers/hwmon/occ/common.c
@@ -889,6 +889,8 @@ static int occ_setup_sensor_attrs(struct occ *occ)
 				s++;
 			}
 		}
+
+		s = (sensors->power.num_sensors * 4) + 1;
 	} else {
 		for (i = 0; i < sensors->power.num_sensors; ++i) {
 			s = i + 1;
@@ -917,11 +919,11 @@ static int occ_setup_sensor_attrs(struct occ *occ)
 						     show_power, NULL, 3, i);
 			attr++;
 		}
-	}
 
-	if (sensors->caps.num_sensors >= 1) {
 		s = sensors->power.num_sensors + 1;
+	}
 
+	if (sensors->caps.num_sensors >= 1) {
 		snprintf(attr->name, sizeof(attr->name), "power%d_label", s);
 		attr->sensor = OCC_INIT_ATTR(attr->name, 0444, show_caps, NULL,
 					     0, 0);
-- 
1.8.3.1