Re: [PATCH 15/15] thermal/of: Initialize trip points separately

From: kernel test robot
Date: Wed Apr 27 2022 - 05:03:03 EST

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Previous message: kernel test robot: "[thierryreding:for-5.19/work 141/141] drivers/gpio/gpio-tegra186.c:170:15: error: implicit declaration of function 'pinctrl_gpio_direction_input'; did you mean 'tegra186_gpio_direction_input'?"
In reply to: Daniel Lezcano: "[PATCH 15/15] thermal/of: Initialize trip points separately"
Next in thread: Daniel Lezcano: "[PATCH 09/15] thermal/core: Move thermal_set_delay_jiffies to static"
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Hi Daniel,

I love your patch! Perhaps something to improve:

[auto build test WARNING on tegra/for-next]
[also build test WARNING on sre-power-supply/for-next linus/master v5.18-rc4]
[cannot apply to rafael-pm/thermal next-20220427]
[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]

url: https://github.com/intel-lab-lkp/linux/commits/Daniel-Lezcano/thermal-OF-rework/20220427-061937
base: https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-next
config: i386-randconfig-a004-20220425 (https://download.01.org/0day-ci/archive/20220427/202204271620.h0RD5aZy-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 1cddcfdc3c683b393df1a5c9063252eb60e52818)
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/b446fa392d1d9fa791ca672608b0860fe37e040f
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Daniel-Lezcano/thermal-OF-rework/20220427-061937
git checkout b446fa392d1d9fa791ca672608b0860fe37e040f
# 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=i386 SHELL=/bin/bash drivers/thermal/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> drivers/thermal/thermal_of.c:965:2: warning: variable 'gchild' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
if (!tz->tbps) {
^~~~~~~~~~~~~~
include/linux/compiler.h:56:28: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:58:30: note: expanded from macro '__trace_if_var'
#define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/thermal/thermal_of.c:996:14: note: uninitialized use occurs here
of_node_put(gchild);
^~~~~~
drivers/thermal/thermal_of.c:965:2: note: remove the 'if' if its condition is always false
if (!tz->tbps) {
^~~~~~~~~~~~~~~~
include/linux/compiler.h:56:23: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^
drivers/thermal/thermal_of.c:905:43: note: initialize the variable 'gchild' to silence this warning
struct device_node *child = NULL, *gchild;
^
= NULL
1 warning generated.

vim +965 drivers/thermal/thermal_of.c

b446fa392d1d9f drivers/thermal/thermal_of.c Daniel Lezcano 2022-04-27 887
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 888 /**
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 889 * thermal_of_build_thermal_zone - parse and fill one thermal zone data
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 890 * @np: DT node containing a thermal zone node
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 891 *
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 892 * This function parses a thermal zone type of node represented by
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 893 * @np parameter and fills the read data into a __thermal_zone data structure
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 894 * and return this pointer.
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 895 *
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 896 * TODO: Missing properties to parse: thermal-sensor-names
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 897 *
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 898 * Return: On success returns a valid struct __thermal_zone,
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 899 * otherwise, it returns a corresponding ERR_PTR(). Caller must
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 900 * check the return value with help of IS_ERR() helper.
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 901 */
c0ff8aaae36955 drivers/thermal/of-thermal.c Julia Lawall 2016-04-19 902 static struct __thermal_zone
c0ff8aaae36955 drivers/thermal/of-thermal.c Julia Lawall 2016-04-19 903 __init *thermal_of_build_thermal_zone(struct device_node *np)
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 904 {
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 905 struct device_node *child = NULL, *gchild;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 906 struct __thermal_zone *tz;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 907 int ret, i;
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 908 u32 prop, coef[2];
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 909
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 910 if (!np) {
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 911 pr_err("no thermal zone np\n");
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 912 return ERR_PTR(-EINVAL);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 913 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 914
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 915 tz = kzalloc(sizeof(*tz), GFP_KERNEL);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 916 if (!tz)
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 917 return ERR_PTR(-ENOMEM);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 918
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 919 ret = of_property_read_u32(np, "polling-delay-passive", &prop);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 920 if (ret < 0) {
3079f340caa72a drivers/thermal/of-thermal.c Amit Kucheria 2019-01-21 921 pr_err("%pOFn: missing polling-delay-passive property\n", np);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 922 goto free_tz;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 923 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 924 tz->passive_delay = prop;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 925
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 926 ret = of_property_read_u32(np, "polling-delay", &prop);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 927 if (ret < 0) {
3079f340caa72a drivers/thermal/of-thermal.c Amit Kucheria 2019-01-21 928 pr_err("%pOFn: missing polling-delay property\n", np);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 929 goto free_tz;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 930 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 931 tz->polling_delay = prop;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 932
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 933 /*
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 934 * REVIST: for now, the thermal framework supports only
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 935 * one sensor per thermal zone. Thus, we are considering
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 936 * only the first two values as slope and offset.
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 937 */
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 938 ret = of_property_read_u32_array(np, "coefficients", coef, 2);
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 939 if (ret == 0) {
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 940 tz->slope = coef[0];
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 941 tz->offset = coef[1];
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 942 } else {
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 943 tz->slope = 1;
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 944 tz->offset = 0;
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 945 }
a46dbae8abe5cd drivers/thermal/of-thermal.c Eduardo Valentin 2015-05-11 946
b446fa392d1d9f drivers/thermal/thermal_of.c Daniel Lezcano 2022-04-27 947 tz->trips = thermal_of_trips_init(np, &tz->ntrips);
b446fa392d1d9f drivers/thermal/thermal_of.c Daniel Lezcano 2022-04-27 948 if (IS_ERR(tz->trips)) {
b446fa392d1d9f drivers/thermal/thermal_of.c Daniel Lezcano 2022-04-27 949 ret = PTR_ERR(tz->trips);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 950 goto finish;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 951 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 952
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 953 /* cooling-maps */
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 954 child = of_get_child_by_name(np, "cooling-maps");
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 955
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 956 /* cooling-maps not provided */
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 957 if (!child)
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 958 goto finish;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 959
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 960 tz->num_tbps = of_get_child_count(child);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 961 if (tz->num_tbps == 0)
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
6396bb221514d2 drivers/thermal/of-thermal.c Kees Cook 2018-06-12 964 tz->tbps = kcalloc(tz->num_tbps, sizeof(*tz->tbps), GFP_KERNEL);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 @965 if (!tz->tbps) {
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 966 ret = -ENOMEM;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 967 goto free_trips;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 968 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 969
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 970 i = 0;
ca9521b770c988 drivers/thermal/of-thermal.c Stephen Boyd 2014-06-18 971 for_each_child_of_node(child, gchild) {
b446fa392d1d9f drivers/thermal/thermal_of.c Daniel Lezcano 2022-04-27 972 ret = thermal_of_populate_bind_params(np, gchild, &tz->tbps[i++]);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 973 if (ret)
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 974 goto free_tbps;
ca9521b770c988 drivers/thermal/of-thermal.c Stephen Boyd 2014-06-18 975 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 976
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 977 finish:
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 978 of_node_put(child);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 979
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 980 return tz;
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 981
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 982 free_tbps:
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 983 for (i = i - 1; i >= 0; i--) {
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 984 struct __thermal_bind_params *tbp = tz->tbps + i;
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 985 int j;
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 986
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 987 for (j = 0; j < tbp->count; j++)
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 988 of_node_put(tbp->tcbp[j].cooling_device);
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 989
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 990 kfree(tbp->tcbp);
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 991 }
a92bab8919e3fb drivers/thermal/of-thermal.c Viresh Kumar 2018-08-08 992
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 993 kfree(tz->tbps);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 994 free_trips:
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 995 kfree(tz->trips);
c2aad93c7edd5e drivers/thermal/of-thermal.c Vladimir Zapolskiy 2014-09-29 996 of_node_put(gchild);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 997 free_tz:
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 998 kfree(tz);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 999 of_node_put(child);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1000
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1001 return ERR_PTR(ret);
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1002 }
4e5e4705bf69ea drivers/thermal/of-thermal.c Eduardo Valentin 2013-07-03 1003

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Next message: Li kunyu: "Re: [PATCH] kernel: Optimize unused integer return values"
Previous message: kernel test robot: "[thierryreding:for-5.19/work 141/141] drivers/gpio/gpio-tegra186.c:170:15: error: implicit declaration of function 'pinctrl_gpio_direction_input'; did you mean 'tegra186_gpio_direction_input'?"
In reply to: Daniel Lezcano: "[PATCH 15/15] thermal/of: Initialize trip points separately"
Next in thread: Daniel Lezcano: "[PATCH 09/15] thermal/core: Move thermal_set_delay_jiffies to static"
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