Re: [PATCH] tof: Add VL53L4CX TOF drivers

[kernel test robot <lkp@intel.com>]

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References: <tencent_326708D02875274DF25B10B91402B3828606@qq.com>
TO: 434779359@qq.com
TO: Jonathan Cameron <jic23@kernel.org>
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CC: "Nuno Sá" <nuno.sa@analog.com>
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CC: Bartosz Golaszewski <brgl@kernel.org>
CC: liufulin <frank.liu@faiot.com>
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Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on linus/master v6.19-rc8 next-20260205]
[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/434779359-qq-com/tof-Add-VL53L4CX-TOF-drivers/20260207-174646
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link:    https://lore.kernel.org/r/tencent_326708D02875274DF25B10B91402B3828606%40qq.com
patch subject: [PATCH] tof: Add VL53L4CX TOF drivers
:::::: branch date: 12 hours ago
:::::: commit date: 12 hours ago
config: riscv-randconfig-r073-20260208 (https://download.01.org/0day-ci/archive/20260208/202602080543.P8e8Azxx-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 8.5.0
smatch version: v0.5.0-8994-gd50c5a4c

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@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202602080543.P8e8Azxx-lkp@intel.com/

smatch warnings:
drivers/iio/proximity/vl53l4cx-i2c.c:6262 VL53LX_i2c_decode_int16_t() warn: '65535' 65535 can't fit into 32767 'value'
drivers/iio/proximity/vl53l4cx-i2c.c:15617 VL53LX_get_device_results() warn: if statement not indented
drivers/iio/proximity/vl53l4cx-i2c.c:16134 ctrl_mz_data_blocking_common() warn: maybe return -EFAULT instead of the bytes remaining?
drivers/iio/proximity/vl53l4cx-i2c.c:16230 ctrl_calibration_data() warn: maybe return -EFAULT instead of the bytes remaining?
drivers/iio/proximity/vl53l4cx-i2c.c:16907 VL53LX_run_hist_xtalk_extraction() warn: for statement not indented

vim +6262 drivers/iio/proximity/vl53l4cx-i2c.c

3d80252b8a6bb2 liufulin 2026-02-07  6256  
3d80252b8a6bb2 liufulin 2026-02-07  6257  int16_t VL53LX_i2c_decode_int16_t(uint16_t count, uint8_t *pbuffer)
3d80252b8a6bb2 liufulin 2026-02-07  6258  {
3d80252b8a6bb2 liufulin 2026-02-07  6259  	int16_t    value = 0x00;
3d80252b8a6bb2 liufulin 2026-02-07  6260  
3d80252b8a6bb2 liufulin 2026-02-07  6261  	if (*pbuffer >= 0x80)
3d80252b8a6bb2 liufulin 2026-02-07 @6262  		value = 0xFFFF;
3d80252b8a6bb2 liufulin 2026-02-07  6263  
3d80252b8a6bb2 liufulin 2026-02-07  6264  	while (count-- > 0)
3d80252b8a6bb2 liufulin 2026-02-07  6265  		value = (value << 8) | (int16_t)*pbuffer++;
3d80252b8a6bb2 liufulin 2026-02-07  6266  
3d80252b8a6bb2 liufulin 2026-02-07  6267  	return value;
3d80252b8a6bb2 liufulin 2026-02-07  6268  }
3d80252b8a6bb2 liufulin 2026-02-07  6269  

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