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Date: Fri, 3 May 2024 03:03:18 +0800
From: kernel test robot <lkp@...el.com>
To: Jonathan Denose <jdenose@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-input@...r.kernel.org,
	Jonathan Denose <jdenose@...gle.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jeffery Miller <jefferymiller@...gle.com>
Subject: Re: [PATCH] Input: elantech - fix touchpad state on resume for
 Lenovo N24

Hi Jonathan,

kernel test robot noticed the following build warnings:

[auto build test WARNING on dtor-input/next]
[also build test WARNING on dtor-input/for-linus hid/for-next linus/master v6.9-rc6 next-20240502]
[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/Jonathan-Denose/Input-elantech-fix-touchpad-state-on-resume-for-Lenovo-N24/20240501-220739
base:   https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next
patch link:    https://lore.kernel.org/r/20240501140231.1.Ifa0e25ebf968d8f307f58d678036944141ab17e6%40changeid
patch subject: [PATCH] Input: elantech - fix touchpad state on resume for Lenovo N24
config: x86_64-rhel-8.3 (https://download.01.org/0day-ci/archive/20240503/202405030210.izdCj8wZ-lkp@intel.com/config)
compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240503/202405030210.izdCj8wZ-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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202405030210.izdCj8wZ-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/uapi/linux/posix_types.h:5,
                    from include/uapi/linux/types.h:14,
                    from include/linux/types.h:6,
                    from include/linux/math.h:5,
                    from include/linux/delay.h:22,
                    from drivers/input/mouse/elantech.c:10:
   drivers/input/mouse/elantech.c: In function 'elantech_reconnect':
>> include/linux/stddef.h:8:14: warning: passing argument 3 of 'ps2_sendbyte' makes integer from pointer without a cast [-Wint-conversion]
       8 | #define NULL ((void *)0)
         |              ^~~~~~~~~~~
         |              |
         |              void *
   drivers/input/mouse/elantech.c:1509:75: note: in expansion of macro 'NULL'
    1509 |                 err = ps2_sendbyte(&psmouse->ps2dev, PSMOUSE_CMD_DISABLE, NULL);
         |                                                                           ^~~~
   In file included from drivers/input/mouse/elantech.c:19:
   include/linux/libps2.h:64:63: note: expected 'unsigned int' but argument is of type 'void *'
      64 | int ps2_sendbyte(struct ps2dev *ps2dev, u8 byte, unsigned int timeout);
         |                                                  ~~~~~~~~~~~~~^~~~~~~
>> include/linux/stddef.h:8:14: warning: passing argument 3 of 'ps2_sendbyte' makes integer from pointer without a cast [-Wint-conversion]
       8 | #define NULL ((void *)0)
         |              ^~~~~~~~~~~
         |              |
         |              void *
   drivers/input/mouse/elantech.c:1515:74: note: in expansion of macro 'NULL'
    1515 |                 err = ps2_sendbyte(&psmouse->ps2dev, PSMOUSE_CMD_ENABLE, NULL);
         |                                                                          ^~~~
   include/linux/libps2.h:64:63: note: expected 'unsigned int' but argument is of type 'void *'
      64 | int ps2_sendbyte(struct ps2dev *ps2dev, u8 byte, unsigned int timeout);
         |                                                  ~~~~~~~~~~~~~^~~~~~~
   drivers/input/mouse/elantech.c: In function 'elantech_setup_ps2':
   drivers/input/mouse/elantech.c:2123:65: warning: '/input1' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
    2123 |                 snprintf(etd->tp_phys, sizeof(etd->tp_phys), "%s/input1",
         |                                                                 ^~~~~~~
   drivers/input/mouse/elantech.c:2123:17: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
    2123 |                 snprintf(etd->tp_phys, sizeof(etd->tp_phys), "%s/input1",
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    2124 |                         psmouse->ps2dev.serio->phys);
         |                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/ps2_sendbyte +8 include/linux/stddef.h

^1da177e4c3f41 Linus Torvalds   2005-04-16  6  
^1da177e4c3f41 Linus Torvalds   2005-04-16  7  #undef NULL
^1da177e4c3f41 Linus Torvalds   2005-04-16 @8  #define NULL ((void *)0)
6e218287432472 Richard Knutsson 2006-09-30  9  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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