From: Paul Marques Mota <[email protected]>
To: HARDWARE MONITORING <[email protected]>
Date: Thu, 7 Dec 2017 20:04:22 +0000
Subject: [PATCH] add stack trace to deprecated hwmon_device_register()

Hi,

hwmon_device_register() in drivers/hwmon/hwmon.c prints the unhelpful
message below on my machine:

(NULL device *): hwmon_device_register() is deprecated. Please convert the 
driver to use hwmon_device_register_with_info().

Therefore, this patch dumps the stack at that point. In my case it is
then obvious in the resulting dmesg, available at

http://www.marquesmota.pt/dmesg.txt

that thermal_add_hwmon_sysfs() in drivers/thermal/thermal_hwmon.c needs
to be converted to the new API.

This patch is against 4.15.0-rc2
I believe it is also needed in Bugzilla bug #195843
https://bugzilla.kernel.org/show_bug.cgi?id=195843

Signed-off-by: Paul Marques Mota<[email protected]>

---
 drivers/hwmon/hwmon.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index c9790e2c3440..31719ce4a681 100644
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -702,6 +702,7 @@ struct device *hwmon_device_register(struct device *dev)
 {
        dev_warn(dev,
                 "hwmon_device_register() is deprecated. Please convert the 
driver to use hwmon_device_register_with_info().\n");
+       dump_stack();
 
        return __hwmon_device_register(dev, NULL, NULL, NULL, NULL);
 }
-- 
2.15.1

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