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Fri, 17 Nov 2023 09:44:05 +0000 Date: Fri, 17 Nov 2023 17:43:11 +0800 From: kernel test robot To: =?iso-8859-1?B?QvZzevZybelueWkgWm9sdOFu?= Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Dmitry Torokhov Subject: drivers/input/touchscreen/egalax_ts_serial.c:116:21: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 Message-ID: <202311171716.uIQY5rT4-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Böszörményi, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 7475e51b87969e01a6812eac713a1c8310372e8a commit: 6b0f8f9c52efe24d6dac06ab963b7bd91c723751 Input: add eGalaxTouch serial touchscreen driver date: 8 years ago config: x86_64-buildonly-randconfig-001-20231012 (https://download.01.org/0day-ci/archive/20231117/202311171716.uIQY5rT4-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231117/202311171716.uIQY5rT4-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202311171716.uIQY5rT4-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from include/linux/kobject.h:21, from include/linux/module.h:17, from drivers/input/touchscreen/egalax_ts_serial.c:19: include/linux/sysfs.h: In function 'sysfs_get_dirent': include/linux/sysfs.h:517:44: warning: pointer targets in passing argument 2 of 'kernfs_find_and_get' differ in signedness [-Wpointer-sign] 517 | return kernfs_find_and_get(parent, name); | ^~~~ | | | const unsigned char * In file included from include/linux/sysfs.h:15: include/linux/kernfs.h:428:57: note: expected 'const char *' but argument is of type 'const unsigned char *' 428 | kernfs_find_and_get(struct kernfs_node *kn, const char *name) | ~~~~~~~~~~~~^~~~ drivers/input/touchscreen/egalax_ts_serial.c: In function 'egalax_connect': >> drivers/input/touchscreen/egalax_ts_serial.c:116:21: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=] 116 | "%s/input0", serio->phys); | ^~~~~~~ drivers/input/touchscreen/egalax_ts_serial.c:115:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32 115 | snprintf(egalax->phys, sizeof(egalax->phys), | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 116 | "%s/input0", serio->phys); | ~~~~~~~~~~~~~~~~~~~~~~~~~ vim +116 drivers/input/touchscreen/egalax_ts_serial.c 94 95 /* 96 * egalax_connect() is the routine that is called when someone adds a 97 * new serio device that supports egalax protocol and registers it as 98 * an input device. This is usually accomplished using inputattach. 99 */ 100 static int egalax_connect(struct serio *serio, struct serio_driver *drv) 101 { 102 struct egalax *egalax; 103 struct input_dev *input_dev; 104 int error; 105 106 egalax = kzalloc(sizeof(struct egalax), GFP_KERNEL); 107 input_dev = input_allocate_device(); 108 if (!egalax) { 109 error = -ENOMEM; 110 goto err_free_mem; 111 } 112 113 egalax->serio = serio; 114 egalax->input = input_dev; 115 snprintf(egalax->phys, sizeof(egalax->phys), > 116 "%s/input0", serio->phys); 117 118 input_dev->name = "EETI eGalaxTouch Serial TouchScreen"; 119 input_dev->phys = egalax->phys; 120 input_dev->id.bustype = BUS_RS232; 121 input_dev->id.vendor = SERIO_EGALAX; 122 input_dev->id.product = 0; 123 input_dev->id.version = 0x0001; 124 input_dev->dev.parent = &serio->dev; 125 126 input_set_capability(input_dev, EV_KEY, BTN_TOUCH); 127 input_set_abs_params(input_dev, ABS_X, 128 EGALAX_MIN_XC, EGALAX_MAX_XC, 0, 0); 129 input_set_abs_params(input_dev, ABS_Y, 130 EGALAX_MIN_YC, EGALAX_MAX_YC, 0, 0); 131 132 serio_set_drvdata(serio, egalax); 133 134 error = serio_open(serio, drv); 135 if (error) 136 goto err_reset_drvdata; 137 138 error = input_register_device(input_dev); 139 if (error) 140 goto err_close_serio; 141 142 return 0; 143 144 err_close_serio: 145 serio_close(serio); 146 err_reset_drvdata: 147 serio_set_drvdata(serio, NULL); 148 err_free_mem: 149 input_free_device(input_dev); 150 kfree(egalax); 151 return error; 152 } 153 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki