Hi, https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Gireesh-Hiremath-in-bosch-com/driver-input-matric-keypad-switch-to-gpiod/20220819-151155 base: https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next config: s390-randconfig-m041-20220819 (https://download.01.org/0day-ci/archive/20220820/202208200111.6wvFtbES-lkp@xxxxxxxxx/config) compiler: s390-linux-gcc (GCC) 12.1.0 If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> smatch warnings: drivers/input/keyboard/matrix_keypad.c:932 matrix_keypad_probe() error: uninitialized symbol 'err'. vim +/err +932 drivers/input/keyboard/matrix_keypad.c 5298cc4cc753bb Bill Pemberton 2012-11-23 823 static int matrix_keypad_probe(struct platform_device *pdev) bab7614d6d1b1f Eric Miao 2009-06-29 824 { bab7614d6d1b1f Eric Miao 2009-06-29 825 const struct matrix_keypad_platform_data *pdata; bab7614d6d1b1f Eric Miao 2009-06-29 826 struct matrix_keypad *keypad; bab7614d6d1b1f Eric Miao 2009-06-29 827 struct input_dev *input_dev; bab7614d6d1b1f Eric Miao 2009-06-29 828 int err; bab7614d6d1b1f Eric Miao 2009-06-29 829 4a83eecff65bd3 AnilKumar Ch 2012-11-20 830 pdata = dev_get_platdata(&pdev->dev); bab7614d6d1b1f Eric Miao 2009-06-29 831 if (!pdata) { 4a83eecff65bd3 AnilKumar Ch 2012-11-20 832 pdata = matrix_keypad_parse_dt(&pdev->dev); d55bda1b3e7c5a Christian Hoff 2018-11-12 833 if (IS_ERR(pdata)) 4a83eecff65bd3 AnilKumar Ch 2012-11-20 834 return PTR_ERR(pdata); 4a83eecff65bd3 AnilKumar Ch 2012-11-20 835 } else if (!pdata->keymap_data) { bab7614d6d1b1f Eric Miao 2009-06-29 836 dev_err(&pdev->dev, "no keymap data defined\n"); bab7614d6d1b1f Eric Miao 2009-06-29 837 return -EINVAL; bab7614d6d1b1f Eric Miao 2009-06-29 838 } bab7614d6d1b1f Eric Miao 2009-06-29 839 4a83eecff65bd3 AnilKumar Ch 2012-11-20 840 keypad = kzalloc(sizeof(struct matrix_keypad), GFP_KERNEL); bab7614d6d1b1f Eric Miao 2009-06-29 841 input_dev = input_allocate_device(); 01111fcd42b050 Dmitry Torokhov 2012-04-20 842 if (!keypad || !input_dev) { bab7614d6d1b1f Eric Miao 2009-06-29 843 err = -ENOMEM; bab7614d6d1b1f Eric Miao 2009-06-29 844 goto err_free_mem; bab7614d6d1b1f Eric Miao 2009-06-29 845 } bab7614d6d1b1f Eric Miao 2009-06-29 846 bab7614d6d1b1f Eric Miao 2009-06-29 847 keypad->input_dev = input_dev; bab7614d6d1b1f Eric Miao 2009-06-29 848 keypad->pdata = pdata; 4a83eecff65bd3 AnilKumar Ch 2012-11-20 849 keypad->row_shift = get_count_order(pdata->num_col_gpios); bab7614d6d1b1f Eric Miao 2009-06-29 850 keypad->stopped = true; a0b420e08e3b87 Gireesh Hiremath 2022-08-19 851 a0b420e08e3b87 Gireesh Hiremath 2022-08-19 852 if (pdata->mode == REDUCED) { a0b420e08e3b87 Gireesh Hiremath 2022-08-19 853 keypad->button_array = devm_kzalloc( a0b420e08e3b87 Gireesh Hiremath 2022-08-19 854 &pdev->dev, a0b420e08e3b87 Gireesh Hiremath 2022-08-19 855 sizeof(struct button) * (pdata->num_of_buttons), a0b420e08e3b87 Gireesh Hiremath 2022-08-19 856 GFP_KERNEL); a0b420e08e3b87 Gireesh Hiremath 2022-08-19 857 if (!keypad->button_array) { a0b420e08e3b87 Gireesh Hiremath 2022-08-19 858 dev_err(&pdev->dev, a0b420e08e3b87 Gireesh Hiremath 2022-08-19 859 "could not allocate memory for button array\n"); err = -ENOMEM; a0b420e08e3b87 Gireesh Hiremath 2022-08-19 860 goto err_free_mem; a0b420e08e3b87 Gireesh Hiremath 2022-08-19 861 ; Why the extra ;? a0b420e08e3b87 Gireesh Hiremath 2022-08-19 862 } a0b420e08e3b87 Gireesh Hiremath 2022-08-19 863 a0b420e08e3b87 Gireesh Hiremath 2022-08-19 864 poll_prepare(keypad); a0b420e08e3b87 Gireesh Hiremath 2022-08-19 865 a0b420e08e3b87 Gireesh Hiremath 2022-08-19 866 err = input_setup_polling(input_dev, matrix_keypad_poll); a0b420e08e3b87 Gireesh Hiremath 2022-08-19 867 if (err) { a0b420e08e3b87 Gireesh Hiremath 2022-08-19 868 dev_err(&pdev->dev, a0b420e08e3b87 Gireesh Hiremath 2022-08-19 869 "unable to set up polling, err=%d\n", err); a0b420e08e3b87 Gireesh Hiremath 2022-08-19 870 return err; Memory leaks. Needs to goto err_free_mem; a0b420e08e3b87 Gireesh Hiremath 2022-08-19 871 } a0b420e08e3b87 Gireesh Hiremath 2022-08-19 872 a0b420e08e3b87 Gireesh Hiremath 2022-08-19 873 input_set_poll_interval(input_dev, pdata->poll_interval_ms); a0b420e08e3b87 Gireesh Hiremath 2022-08-19 874 } else { bab7614d6d1b1f Eric Miao 2009-06-29 875 INIT_DELAYED_WORK(&keypad->work, matrix_keypad_scan); a0b420e08e3b87 Gireesh Hiremath 2022-08-19 876 } bab7614d6d1b1f Eric Miao 2009-06-29 877 spin_lock_init(&keypad->lock); bab7614d6d1b1f Eric Miao 2009-06-29 878 bab7614d6d1b1f Eric Miao 2009-06-29 879 input_dev->name = pdev->name; bab7614d6d1b1f Eric Miao 2009-06-29 880 input_dev->id.bustype = BUS_HOST; bab7614d6d1b1f Eric Miao 2009-06-29 881 input_dev->dev.parent = &pdev->dev; bab7614d6d1b1f Eric Miao 2009-06-29 882 input_dev->open = matrix_keypad_start; bab7614d6d1b1f Eric Miao 2009-06-29 883 input_dev->close = matrix_keypad_stop; bab7614d6d1b1f Eric Miao 2009-06-29 884 a0b420e08e3b87 Gireesh Hiremath 2022-08-19 885 if (pdata->mode == REDUCED) { a0b420e08e3b87 Gireesh Hiremath 2022-08-19 886 err = matrix_keypad_build_keymap(pdata->keymap_data, NULL, a0b420e08e3b87 Gireesh Hiremath 2022-08-19 887 pdata->num_line_gpios, a0b420e08e3b87 Gireesh Hiremath 2022-08-19 888 pdata->num_line_gpios, NULL, a0b420e08e3b87 Gireesh Hiremath 2022-08-19 889 input_dev); a0b420e08e3b87 Gireesh Hiremath 2022-08-19 890 if (err) { a0b420e08e3b87 Gireesh Hiremath 2022-08-19 891 dev_err(&pdev->dev, "failed to build keymap for reduced mode\n"); a0b420e08e3b87 Gireesh Hiremath 2022-08-19 892 goto err_free_mem; a0b420e08e3b87 Gireesh Hiremath 2022-08-19 893 } a0b420e08e3b87 Gireesh Hiremath 2022-08-19 894 } else { 4a83eecff65bd3 AnilKumar Ch 2012-11-20 895 err = matrix_keypad_build_keymap(pdata->keymap_data, NULL, 1932811f426fee Dmitry Torokhov 2012-05-10 896 pdata->num_row_gpios, a0b420e08e3b87 Gireesh Hiremath 2022-08-19 897 pdata->num_col_gpios, NULL, a0b420e08e3b87 Gireesh Hiremath 2022-08-19 898 input_dev); 4a83eecff65bd3 AnilKumar Ch 2012-11-20 899 if (err) { a0b420e08e3b87 Gireesh Hiremath 2022-08-19 900 dev_err(&pdev->dev, "failed to build keymap for generic mode\n"); 1932811f426fee Dmitry Torokhov 2012-05-10 901 goto err_free_mem; 4a83eecff65bd3 AnilKumar Ch 2012-11-20 902 } a0b420e08e3b87 Gireesh Hiremath 2022-08-19 903 } bab7614d6d1b1f Eric Miao 2009-06-29 904 1932811f426fee Dmitry Torokhov 2012-05-10 905 if (!pdata->no_autorepeat) 1932811f426fee Dmitry Torokhov 2012-05-10 906 __set_bit(EV_REP, input_dev->evbit); bab7614d6d1b1f Eric Miao 2009-06-29 907 input_set_capability(input_dev, EV_MSC, MSC_SCAN); bab7614d6d1b1f Eric Miao 2009-06-29 908 input_set_drvdata(input_dev, keypad); bab7614d6d1b1f Eric Miao 2009-06-29 909 a0b420e08e3b87 Gireesh Hiremath 2022-08-19 910 if (pdata->mode == REDUCED) { a0b420e08e3b87 Gireesh Hiremath 2022-08-19 911 button_hdl_init(keypad); a0b420e08e3b87 Gireesh Hiremath 2022-08-19 912 } else { b83643ebf22423 Dmitry Torokhov 2012-04-20 913 err = matrix_keypad_init_gpio(pdev, keypad); bab7614d6d1b1f Eric Miao 2009-06-29 914 if (err) bab7614d6d1b1f Eric Miao 2009-06-29 915 goto err_free_mem; a0b420e08e3b87 Gireesh Hiremath 2022-08-19 916 } bab7614d6d1b1f Eric Miao 2009-06-29 917 bab7614d6d1b1f Eric Miao 2009-06-29 918 err = input_register_device(keypad->input_dev); bab7614d6d1b1f Eric Miao 2009-06-29 919 if (err) b83643ebf22423 Dmitry Torokhov 2012-04-20 920 goto err_free_gpio; bab7614d6d1b1f Eric Miao 2009-06-29 921 bab7614d6d1b1f Eric Miao 2009-06-29 922 device_init_wakeup(&pdev->dev, pdata->wakeup); bab7614d6d1b1f Eric Miao 2009-06-29 923 platform_set_drvdata(pdev, keypad); bab7614d6d1b1f Eric Miao 2009-06-29 924 bab7614d6d1b1f Eric Miao 2009-06-29 925 return 0; bab7614d6d1b1f Eric Miao 2009-06-29 926 b83643ebf22423 Dmitry Torokhov 2012-04-20 927 err_free_gpio: b83643ebf22423 Dmitry Torokhov 2012-04-20 928 matrix_keypad_free_gpio(keypad); bab7614d6d1b1f Eric Miao 2009-06-29 929 err_free_mem: bab7614d6d1b1f Eric Miao 2009-06-29 930 input_free_device(input_dev); bab7614d6d1b1f Eric Miao 2009-06-29 931 kfree(keypad); bab7614d6d1b1f Eric Miao 2009-06-29 @932 return err; bab7614d6d1b1f Eric Miao 2009-06-29 933 } -- 0-DAY CI Kernel Test Service https://01.org/lkp
