Messages in this thread | | | Date | Wed, 4 May 2022 11:18:05 +0300 | From | Dan Carpenter <> | Subject | Re: [PATCH 15/15] thermal/of: Initialize trip points separately |
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Hi Daniel,
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-m021 (https://download.01.org/0day-ci/archive/20220503/202205031504.J62WedEw-lkp@intel.com/config) compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
smatch warnings: drivers/thermal/thermal_of.c:996 thermal_of_build_thermal_zone() error: uninitialized symbol 'gchild'.
vim +/gchild +996 drivers/thermal/thermal_of.c
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;
"gchild" not initialized on this path.
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;
Better to do the of_node_put(gchild); before the goto anyway.
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 }
-- 0-DAY CI Kernel Test Service https://01.org/lkp
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