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Message-ID: <202207100924.K7DHJPX2-lkp@intel.com>
Date: Sun, 10 Jul 2022 09:12:49 +0800
From: kernel test robot <lkp@...el.com>
To: Daniel Lezcano <daniel.lezcano@...exp.org>,
daniel.lezcano@...aro.org, rafael@...nel.org
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org, rui.zhang@...el.com,
linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
khilman@...libre.com, abailon@...libre.com, lukasz.luba@....com,
Amit Kucheria <amitk@...nel.org>
Subject: Re: [PATCH v4 12/12] thermal/of: Initialize trip points separately
Hi Daniel,
I love your patch! Perhaps something to improve:
[auto build test WARNING on rafael-pm/thermal]
[also build test WARNING on tegra/for-next linus/master v5.19-rc5 next-20220708]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Daniel-Lezcano/thermal-OF-rework/20220710-063550
base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git thermal
config: x86_64-randconfig-a003 (https://download.01.org/0day-ci/archive/20220710/202207100924.K7DHJPX2-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 77a38f6839980bfac61babb40d83772c51427011)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/ae09a5baa03d816f54f1e0654fd0ad08eab5d427
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Daniel-Lezcano/thermal-OF-rework/20220710-063550
git checkout ae09a5baa03d816f54f1e0654fd0ad08eab5d427
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/thermal/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> drivers/thermal/thermal_of.c:977:6: warning: variable 'gchild' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
if (!tz->tbps) {
^~~~~~~~~
drivers/thermal/thermal_of.c:1010:14: note: uninitialized use occurs here
of_node_put(gchild);
^~~~~~
drivers/thermal/thermal_of.c:977:2: note: remove the 'if' if its condition is always false
if (!tz->tbps) {
^~~~~~~~~~~~~~~~
drivers/thermal/thermal_of.c:917:43: note: initialize the variable 'gchild' to silence this warning
struct device_node *child = NULL, *gchild;
^
= NULL
1 warning generated.
vim +977 drivers/thermal/thermal_of.c
ae09a5baa03d81 drivers/thermal/thermal_of.c Daniel Lezcano 2022-07-10 899
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 900 /**
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 901 * thermal_of_build_thermal_zone - parse and fill one thermal zone data
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 902 * @np: DT node containing a thermal zone node
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 903 *
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 904 * This function parses a thermal zone type of node represented by
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 905 * @np parameter and fills the read data into a __thermal_zone data structure
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 906 * and return this pointer.
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 907 *
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 908 * TODO: Missing properties to parse: thermal-sensor-names
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 909 *
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 910 * Return: On success returns a valid struct __thermal_zone,
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 911 * otherwise, it returns a corresponding ERR_PTR(). Caller must
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 912 * check the return value with help of IS_ERR() helper.
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 913 */
c0ff8aaae36955 drivers/thermal/of-thermal.c Julia Lawall 2016-04-19 914 static struct __thermal_zone
c0ff8aaae36955 drivers/thermal/of-thermal.c Julia Lawall 2016-04-19 915 __init *thermal_of_build_thermal_zone(struct device_node *np)
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 916 {
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 917 struct device_node *child = NULL, *gchild;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 918 struct __thermal_zone *tz;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 919 int ret, i;
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 920 u32 prop, coef[2];
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 921
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 922 if (!np) {
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 923 pr_err("no thermal zone np\n");
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 924 return ERR_PTR(-EINVAL);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 925 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 926
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 927 tz = kzalloc(sizeof(*tz), GFP_KERNEL);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 928 if (!tz)
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 929 return ERR_PTR(-ENOMEM);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 930
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 931 ret = of_property_read_u32(np, "polling-delay-passive", &prop);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 932 if (ret < 0) {
3079f340caa72a drivers/thermal/of-thermal.c Amit Kucheria 2019-01-21 933 pr_err("%pOFn: missing polling-delay-passive property\n", np);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 934 goto free_tz;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 935 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 936 tz->passive_delay = prop;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 937
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 938 ret = of_property_read_u32(np, "polling-delay", &prop);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 939 if (ret < 0) {
3079f340caa72a drivers/thermal/of-thermal.c Amit Kucheria 2019-01-21 940 pr_err("%pOFn: missing polling-delay property\n", np);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 941 goto free_tz;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 942 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 943 tz->polling_delay = prop;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 944
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 945 /*
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 946 * REVIST: for now, the thermal framework supports only
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 947 * one sensor per thermal zone. Thus, we are considering
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 948 * only the first two values as slope and offset.
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 949 */
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 950 ret = of_property_read_u32_array(np, "coefficients", coef, 2);
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 951 if (ret == 0) {
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 952 tz->slope = coef[0];
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 953 tz->offset = coef[1];
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 954 } else {
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 955 tz->slope = 1;
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 956 tz->offset = 0;
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 957 }
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 958
ae09a5baa03d81 drivers/thermal/thermal_of.c Daniel Lezcano 2022-07-10 959 tz->trips = thermal_of_trips_init(np, &tz->ntrips);
ae09a5baa03d81 drivers/thermal/thermal_of.c Daniel Lezcano 2022-07-10 960 if (IS_ERR(tz->trips)) {
ae09a5baa03d81 drivers/thermal/thermal_of.c Daniel Lezcano 2022-07-10 961 ret = PTR_ERR(tz->trips);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 962 goto finish;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 963 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 964
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 965 /* cooling-maps */
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 966 child = of_get_child_by_name(np, "cooling-maps");
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 967
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 968 /* cooling-maps not provided */
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 969 if (!child)
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 970 goto finish;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 971
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 972 tz->num_tbps = of_get_child_count(child);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 973 if (tz->num_tbps == 0)
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 974 goto finish;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 975
6396bb221514d2 drivers/thermal/of-thermal.c Kees Cook 2018-06-12 976 tz->tbps = kcalloc(tz->num_tbps, sizeof(*tz->tbps), GFP_KERNEL);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 @977 if (!tz->tbps) {
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 978 ret = -ENOMEM;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 979 goto free_trips;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 980 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 981
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 982 i = 0;
ca9521b770c988 drivers/thermal/of-thermal.c Stephen Boyd 2014-06-18 983 for_each_child_of_node(child, gchild) {
ae09a5baa03d81 drivers/thermal/thermal_of.c Daniel Lezcano 2022-07-10 984 ret = thermal_of_populate_bind_params(np, gchild, &tz->tbps[i++]);
ae09a5baa03d81 drivers/thermal/thermal_of.c Daniel Lezcano 2022-07-10 985 if (ret) {
ae09a5baa03d81 drivers/thermal/thermal_of.c Daniel Lezcano 2022-07-10 986 of_node_put(gchild);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 987 goto free_tbps;
ca9521b770c988 drivers/thermal/of-thermal.c Stephen Boyd 2014-06-18 988 }
ae09a5baa03d81 drivers/thermal/thermal_of.c Daniel Lezcano 2022-07-10 989 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 990
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 991 finish:
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 992 of_node_put(child);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 993
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 994 return tz;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 995
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 996 free_tbps:
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 997 for (i = i - 1; i >= 0; i--) {
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 998 struct __thermal_bind_params *tbp = tz->tbps + i;
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 999 int j;
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 1000
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 1001 for (j = 0; j < tbp->count; j++)
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 1002 of_node_put(tbp->tcbp[j].cooling_device);
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 1003
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 1004 kfree(tbp->tcbp);
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 1005 }
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 1006
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1007 kfree(tz->tbps);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1008 free_trips:
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1009 kfree(tz->trips);
c2aad93c7edd5e drivers/thermal/of-thermal.c Vladimir Zapolskiy 2014-09-29 1010 of_node_put(gchild);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1011 free_tz:
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1012 kfree(tz);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1013 of_node_put(child);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1014
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1015 return ERR_PTR(ret);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1016 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1017
--
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