Re: [PATCH v6 10/10] media: i2c: Add driver for mlx7502x ToF sensor

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

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
In-Reply-To: <6f666d475da17b3469fd0471531bc615f6fd797a.1715871189.git.vkh@melexis.com>
References: <6f666d475da17b3469fd0471531bc615f6fd797a.1715871189.git.vkh@melexis.com>
TO: Volodymyr Kharuk <vkh@melexis.com>
TO: linux-media@vger.kernel.org
CC: Andrii Kyselov <ays@melexis.com>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: Rob Herring <robh+dt@kernel.org>
CC: Krzysztof Kozlowski <krzk@kernel.org>
CC: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
CC: devicetree@vger.kernel.org
CC: Hans Verkuil <hverkuil@xs4all.nl>
CC: Sakari Ailus <sakari.ailus@linux.intel.com>
CC: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
CC: Volodymyr Kharuk <vkh@melexis.com>

Hi Volodymyr,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 8771b7f31b7fff91a998e6afdb60650d4bac59a5]

url:    https://github.com/intel-lab-lkp/linux/commits/Volodymyr-Kharuk/media-uapi-ctrls-Add-camera-trigger-controls/20240517-004536
base:   8771b7f31b7fff91a998e6afdb60650d4bac59a5
patch link:    https://lore.kernel.org/r/6f666d475da17b3469fd0471531bc615f6fd797a.1715871189.git.vkh%40melexis.com
patch subject: [PATCH v6 10/10] media: i2c: Add driver for mlx7502x ToF sensor
:::::: branch date: 2 days ago
:::::: commit date: 2 days ago
config: mips-randconfig-r071-20240518 (https://download.01.org/0day-ci/archive/20240518/202405181557.HpbDJU4b-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project fa9b1be45088dce1e4b602d451f118128b94237b)

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/202405181557.HpbDJU4b-lkp@intel.com/

smatch warnings:
drivers/media/i2c/mlx7502x.c:664 mlx7502x_runtime_resume() warn: 'sensor->xclk' from clk_prepare_enable() not released on lines: 664.
drivers/media/i2c/mlx7502x.c:1586 mlx7502x_link_freq_init() error: buffer overflow 'link_freq' 6 <= 6 (assuming for loop doesn't break)

vim +664 drivers/media/i2c/mlx7502x.c

93b22d3a235baf Volodymyr Kharuk 2024-05-16  619  
93b22d3a235baf Volodymyr Kharuk 2024-05-16  620  static int __maybe_unused mlx7502x_runtime_resume(struct device *dev)
93b22d3a235baf Volodymyr Kharuk 2024-05-16  621  {
93b22d3a235baf Volodymyr Kharuk 2024-05-16  622  	struct v4l2_subdev *sd = dev_get_drvdata(dev);
93b22d3a235baf Volodymyr Kharuk 2024-05-16  623  	struct mlx7502x *sensor = to_mlx7502x(sd);
93b22d3a235baf Volodymyr Kharuk 2024-05-16  624  	int ret;
93b22d3a235baf Volodymyr Kharuk 2024-05-16  625  
93b22d3a235baf Volodymyr Kharuk 2024-05-16  626  	gpiod_set_value_cansleep(sensor->reset, 0);
93b22d3a235baf Volodymyr Kharuk 2024-05-16  627  
93b22d3a235baf Volodymyr Kharuk 2024-05-16  628  	ret = regulator_bulk_enable(MLX7502X_NUM_SUPPLIES, sensor->supplies);
93b22d3a235baf Volodymyr Kharuk 2024-05-16  629  	if (ret) {
93b22d3a235baf Volodymyr Kharuk 2024-05-16  630  		dev_err(sensor->dev, "failed to enable supply: %d\n", ret);
93b22d3a235baf Volodymyr Kharuk 2024-05-16  631  		return ret;
93b22d3a235baf Volodymyr Kharuk 2024-05-16  632  	}
93b22d3a235baf Volodymyr Kharuk 2024-05-16  633  
93b22d3a235baf Volodymyr Kharuk 2024-05-16  634  	ret = clk_prepare_enable(sensor->xclk);
93b22d3a235baf Volodymyr Kharuk 2024-05-16  635  	if (ret) {
93b22d3a235baf Volodymyr Kharuk 2024-05-16  636  		dev_err(sensor->dev, "failed to enable external clock: %d\n",
93b22d3a235baf Volodymyr Kharuk 2024-05-16  637  			ret);
93b22d3a235baf Volodymyr Kharuk 2024-05-16  638  		goto fail_clk;
93b22d3a235baf Volodymyr Kharuk 2024-05-16  639  	}
93b22d3a235baf Volodymyr Kharuk 2024-05-16  640  
93b22d3a235baf Volodymyr Kharuk 2024-05-16  641  	gpiod_set_value_cansleep(sensor->reset, 1);
93b22d3a235baf Volodymyr Kharuk 2024-05-16  642  	msleep(MLX7502X_RESET_DELAY_MS);
93b22d3a235baf Volodymyr Kharuk 2024-05-16  643  
93b22d3a235baf Volodymyr Kharuk 2024-05-16  644  	dev_dbg(sensor->dev, "power on\n");
93b22d3a235baf Volodymyr Kharuk 2024-05-16  645  
93b22d3a235baf Volodymyr Kharuk 2024-05-16  646  	ret = mlx7502x_write_regval(sd, mlx7502x_common_init_cfg,
93b22d3a235baf Volodymyr Kharuk 2024-05-16  647  				    ARRAY_SIZE(mlx7502x_common_init_cfg));
93b22d3a235baf Volodymyr Kharuk 2024-05-16  648  	if (ret < 0) {
93b22d3a235baf Volodymyr Kharuk 2024-05-16  649  		dev_err(sensor->dev, "failed to write init_cfg\n");
93b22d3a235baf Volodymyr Kharuk 2024-05-16  650  		goto fail_clk;
93b22d3a235baf Volodymyr Kharuk 2024-05-16  651  	}
93b22d3a235baf Volodymyr Kharuk 2024-05-16  652  
93b22d3a235baf Volodymyr Kharuk 2024-05-16  653  	ret = mlx7502x_write_regval(sd, sensor->cur_desc->init_cfg,
93b22d3a235baf Volodymyr Kharuk 2024-05-16  654  				    sensor->cur_desc->init_cfg_size);
93b22d3a235baf Volodymyr Kharuk 2024-05-16  655  	if (ret < 0) {
93b22d3a235baf Volodymyr Kharuk 2024-05-16  656  		dev_err(sensor->dev, "failed to write sensor specific init_cfg\n");
93b22d3a235baf Volodymyr Kharuk 2024-05-16  657  		goto fail_clk;
93b22d3a235baf Volodymyr Kharuk 2024-05-16  658  	}
93b22d3a235baf Volodymyr Kharuk 2024-05-16  659  
93b22d3a235baf Volodymyr Kharuk 2024-05-16  660  	return 0;
93b22d3a235baf Volodymyr Kharuk 2024-05-16  661  
93b22d3a235baf Volodymyr Kharuk 2024-05-16  662  fail_clk:
93b22d3a235baf Volodymyr Kharuk 2024-05-16  663  	regulator_bulk_disable(MLX7502X_NUM_SUPPLIES, sensor->supplies);
93b22d3a235baf Volodymyr Kharuk 2024-05-16 @664  	return ret;
93b22d3a235baf Volodymyr Kharuk 2024-05-16  665  }
93b22d3a235baf Volodymyr Kharuk 2024-05-16  666  

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