Re: [PATCH] asus-wmi: Add support for TUF laptop keyboard RGB

[kernel test robot]

Hi "Luke,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.19]
[cannot apply to next-20220812]
[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/Luke-D-Jones/asus-wmi-Add-support-for-TUF-laptop-keyboard-RGB/20220804-071716
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 526942b8134cc34d25d27f95dfff98b8ce2f6fcd
config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20220813/202208132140.7Y3f2Xhn-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/e25083de01260bb6c1b3070f7f3e6915de07c44c
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Luke-D-Jones/asus-wmi-Add-support-for-TUF-laptop-keyboard-RGB/20220804-071716
        git checkout e25083de01260bb6c1b3070f7f3e6915de07c44c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/platform/x86/

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

All warnings (new ones prefixed by >>):

   drivers/platform/x86/asus-wmi.c: In function 'tuf_krgb_mode_store':
>> drivers/platform/x86/asus-wmi.c:782:15: warning: variable 'data' set but not used [-Wunused-but-set-variable]
     782 |         char *data, *part, *end;
         |               ^~~~


vim +/data +782 drivers/platform/x86/asus-wmi.c

   777	
   778	static ssize_t tuf_krgb_mode_store(struct device *device,
   779					 struct device_attribute *attr,
   780					 const char *buf, size_t count)
   781	{
 > 782		char *data, *part, *end;
   783		u8 res, tmp, arg_num;
   784		int err;
   785	
   786		struct asus_wmi *asus = dev_get_drvdata(device);
   787		struct led_classdev *cdev = &asus->tuf_krgb_mode.dev.led_cdev;
   788	
   789		data = end = kstrdup(buf, GFP_KERNEL);
   790		arg_num = 0;
   791	
   792		while ((part = strsep(&end, " ")) != NULL) {
   793			if (part == NULL)
   794				return -1;
   795	
   796			res = kstrtou8(part, 10, &tmp);
   797			if (res)
   798				return -1;
   799	
   800			if (arg_num == 0)
   801				asus->tuf_krgb_mode.save = tmp;
   802			else if (arg_num == 1)
   803				/* These are the known usable modes across all TUF/ROG */
   804				asus->tuf_krgb_mode.mode = tmp < 12 && tmp != 9 ? tmp : 0x0a;
   805			else if (arg_num == 2) {
   806				if (tmp == 0)
   807					asus->tuf_krgb_mode.speed = 0xe1;
   808				else if (tmp == 1)
   809					asus->tuf_krgb_mode.speed = 0xeb;
   810				else if (tmp == 2)
   811					asus->tuf_krgb_mode.speed = 0xf5;
   812				else
   813					asus->tuf_krgb_mode.speed = 0xeb;
   814			}
   815	
   816			arg_num += 1;
   817		}
   818	
   819		err = tuf_rgb_brightness_set(cdev, cdev->brightness);
   820		if (err)
   821			return err;
   822		return 0;
   823	}
   824	

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