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Wed, 27 Aug 2025 00:17:31 -0700 (PDT) Date: Wed, 27 Aug 2025 10:17:26 +0300 From: Dan Carpenter To: oe-kbuild@lists.linux.dev, =?iso-8859-1?Q?Andr=E9?= Apitzsch Cc: lkp@intel.com, oe-kbuild-all@lists.linux.dev, linux-media@vger.kernel.org, Sakari Ailus , Laurent Pinchart Subject: [sailus-media-tree:cleanup 30/54] drivers/media/i2c/imx214.c:1109 imx214_ctrls_init() error: we previously assumed 'imx214->link_freq' could be null (see line 1017) Message-ID: <202508270603.MDqIVFss-lkp@intel.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit tree: git://linuxtv.org/sailus/media_tree.git cleanup head: 9a8e7210e8e21ebba263affd0d7481ef0d6c323e commit: 7407c0acdb2ff0c1e3a962543db7d775b3b611c8 [30/54] media: i2c: imx214: Move imx214_pll_update to imx214_ctrls_init config: i386-randconfig-141-20250827 (https://download.01.org/0day-ci/archive/20250827/202508270603.MDqIVFss-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0 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 | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202508270603.MDqIVFss-lkp@intel.com/ smatch warnings: drivers/media/i2c/imx214.c:1109 imx214_ctrls_init() error: we previously assumed 'imx214->link_freq' could be null (see line 1017) vim +1109 drivers/media/i2c/imx214.c 4f302d004bd0fc André Apitzsch 2023-12-06 987 static int imx214_ctrls_init(struct imx214 *imx214) 4f302d004bd0fc André Apitzsch 2023-12-06 988 { 4f302d004bd0fc André Apitzsch 2023-12-06 989 static const struct v4l2_area unit_size = { 4f302d004bd0fc André Apitzsch 2023-12-06 990 .width = 1120, 4f302d004bd0fc André Apitzsch 2023-12-06 991 .height = 1120, 4f302d004bd0fc André Apitzsch 2023-12-06 992 }; 0b57fcf81d32b8 André Apitzsch 2024-12-20 993 const struct imx214_mode *mode = &imx214_modes[0]; 2ae9f9780d8097 André Apitzsch 2023-12-06 994 struct v4l2_fwnode_device_properties props; 4f302d004bd0fc André Apitzsch 2023-12-06 995 struct v4l2_ctrl_handler *ctrl_hdlr; 0b57fcf81d32b8 André Apitzsch 2024-12-20 996 int exposure_max, exposure_def; 0b57fcf81d32b8 André Apitzsch 2024-12-20 997 int hblank; aac37a3a763d1f André Apitzsch 2024-12-20 998 int i, ret; 4f302d004bd0fc André Apitzsch 2023-12-06 999 2ae9f9780d8097 André Apitzsch 2023-12-06 1000 ret = v4l2_fwnode_device_parse(imx214->dev, &props); 2ae9f9780d8097 André Apitzsch 2023-12-06 1001 if (ret < 0) 2ae9f9780d8097 André Apitzsch 2023-12-06 1002 return ret; 2ae9f9780d8097 André Apitzsch 2023-12-06 1003 4f302d004bd0fc André Apitzsch 2023-12-06 1004 ctrl_hdlr = &imx214->ctrls; aac37a3a763d1f André Apitzsch 2024-12-20 1005 ret = v4l2_ctrl_handler_init(&imx214->ctrls, 13); 4f302d004bd0fc André Apitzsch 2023-12-06 1006 if (ret) 4f302d004bd0fc André Apitzsch 2023-12-06 1007 return ret; 4f302d004bd0fc André Apitzsch 2023-12-06 1008 b9b359662952ff André Apitzsch 2025-05-24 1009 imx214->pixel_rate = b9b359662952ff André Apitzsch 2025-05-24 1010 v4l2_ctrl_new_std(ctrl_hdlr, NULL, V4L2_CID_PIXEL_RATE, 1, b9b359662952ff André Apitzsch 2025-05-24 1011 INT_MAX, 1, 1); 4f302d004bd0fc André Apitzsch 2023-12-06 1012 4f302d004bd0fc André Apitzsch 2023-12-06 1013 imx214->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, NULL, 4f302d004bd0fc André Apitzsch 2023-12-06 1014 V4L2_CID_LINK_FREQ, b9b359662952ff André Apitzsch 2025-05-24 1015 imx214->bus_cfg.nr_of_link_frequencies - 1, b9b359662952ff André Apitzsch 2025-05-24 1016 0, imx214->bus_cfg.link_frequencies); 4f302d004bd0fc André Apitzsch 2023-12-06 @1017 if (imx214->link_freq) ^^^^^^^^^^^^^^^^^ This assumes ->link_freq can be NULL. 4f302d004bd0fc André Apitzsch 2023-12-06 1018 imx214->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; 4f302d004bd0fc André Apitzsch 2023-12-06 1019 4f302d004bd0fc André Apitzsch 2023-12-06 1020 /* 4f302d004bd0fc André Apitzsch 2023-12-06 1021 * WARNING! 4f302d004bd0fc André Apitzsch 2023-12-06 1022 * Values obtained reverse engineering blobs and/or devices. 4f302d004bd0fc André Apitzsch 2023-12-06 1023 * Ranges and functionality might be wrong. 4f302d004bd0fc André Apitzsch 2023-12-06 1024 * 4f302d004bd0fc André Apitzsch 2023-12-06 1025 * Sony, please release some register set documentation for the 4f302d004bd0fc André Apitzsch 2023-12-06 1026 * device. 4f302d004bd0fc André Apitzsch 2023-12-06 1027 * 4f302d004bd0fc André Apitzsch 2023-12-06 1028 * Yours sincerely, Ricardo. 4f302d004bd0fc André Apitzsch 2023-12-06 1029 */ 0b57fcf81d32b8 André Apitzsch 2024-12-20 1030 0b57fcf81d32b8 André Apitzsch 2024-12-20 1031 /* Initial vblank/hblank/exposure parameters based on current mode */ 0b57fcf81d32b8 André Apitzsch 2024-12-20 1032 imx214->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops, 0b57fcf81d32b8 André Apitzsch 2024-12-20 1033 V4L2_CID_VBLANK, IMX214_VBLANK_MIN, 0b57fcf81d32b8 André Apitzsch 2024-12-20 1034 IMX214_VTS_MAX - mode->height, 2, 0b57fcf81d32b8 André Apitzsch 2024-12-20 1035 mode->vts_def - mode->height); 0b57fcf81d32b8 André Apitzsch 2024-12-20 1036 0b57fcf81d32b8 André Apitzsch 2024-12-20 1037 hblank = IMX214_PPL_DEFAULT - mode->width; 0b57fcf81d32b8 André Apitzsch 2024-12-20 1038 imx214->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops, 0b57fcf81d32b8 André Apitzsch 2024-12-20 1039 V4L2_CID_HBLANK, hblank, hblank, 0b57fcf81d32b8 André Apitzsch 2024-12-20 1040 1, hblank); 0b57fcf81d32b8 André Apitzsch 2024-12-20 1041 if (imx214->hblank) 0b57fcf81d32b8 André Apitzsch 2024-12-20 1042 imx214->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; 0b57fcf81d32b8 André Apitzsch 2024-12-20 1043 0b57fcf81d32b8 André Apitzsch 2024-12-20 1044 exposure_max = mode->vts_def - IMX214_EXPOSURE_OFFSET; 0b57fcf81d32b8 André Apitzsch 2024-12-20 1045 exposure_def = min(exposure_max, IMX214_EXPOSURE_DEFAULT); 4f302d004bd0fc André Apitzsch 2023-12-06 1046 imx214->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops, 4f302d004bd0fc André Apitzsch 2023-12-06 1047 V4L2_CID_EXPOSURE, 4f302d004bd0fc André Apitzsch 2023-12-06 1048 IMX214_EXPOSURE_MIN, 0b57fcf81d32b8 André Apitzsch 2024-12-20 1049 exposure_max, 4f302d004bd0fc André Apitzsch 2023-12-06 1050 IMX214_EXPOSURE_STEP, 0b57fcf81d32b8 André Apitzsch 2024-12-20 1051 exposure_def); 4f302d004bd0fc André Apitzsch 2023-12-06 1052 dafbd1e960446e André Apitzsch 2024-12-20 1053 v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, dafbd1e960446e André Apitzsch 2024-12-20 1054 IMX214_ANA_GAIN_MIN, IMX214_ANA_GAIN_MAX, dafbd1e960446e André Apitzsch 2024-12-20 1055 IMX214_ANA_GAIN_STEP, IMX214_ANA_GAIN_DEFAULT); dafbd1e960446e André Apitzsch 2024-12-20 1056 dafbd1e960446e André Apitzsch 2024-12-20 1057 v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops, V4L2_CID_DIGITAL_GAIN, dafbd1e960446e André Apitzsch 2024-12-20 1058 IMX214_DGTL_GAIN_MIN, IMX214_DGTL_GAIN_MAX, dafbd1e960446e André Apitzsch 2024-12-20 1059 IMX214_DGTL_GAIN_STEP, IMX214_DGTL_GAIN_DEFAULT); dafbd1e960446e André Apitzsch 2024-12-20 1060 5f8d5fe0bd9471 André Apitzsch 2024-12-20 1061 imx214->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops, 5f8d5fe0bd9471 André Apitzsch 2024-12-20 1062 V4L2_CID_HFLIP, 0, 1, 1, 0); 5f8d5fe0bd9471 André Apitzsch 2024-12-20 1063 if (imx214->hflip) 5f8d5fe0bd9471 André Apitzsch 2024-12-20 1064 imx214->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; 5f8d5fe0bd9471 André Apitzsch 2024-12-20 1065 5f8d5fe0bd9471 André Apitzsch 2024-12-20 1066 imx214->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops, 5f8d5fe0bd9471 André Apitzsch 2024-12-20 1067 V4L2_CID_VFLIP, 0, 1, 1, 0); 5f8d5fe0bd9471 André Apitzsch 2024-12-20 1068 if (imx214->vflip) 5f8d5fe0bd9471 André Apitzsch 2024-12-20 1069 imx214->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; 5f8d5fe0bd9471 André Apitzsch 2024-12-20 1070 5f8d5fe0bd9471 André Apitzsch 2024-12-20 1071 v4l2_ctrl_cluster(2, &imx214->hflip); 5f8d5fe0bd9471 André Apitzsch 2024-12-20 1072 aac37a3a763d1f André Apitzsch 2024-12-20 1073 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx214_ctrl_ops, aac37a3a763d1f André Apitzsch 2024-12-20 1074 V4L2_CID_TEST_PATTERN, aac37a3a763d1f André Apitzsch 2024-12-20 1075 ARRAY_SIZE(imx214_test_pattern_menu) - 1, aac37a3a763d1f André Apitzsch 2024-12-20 1076 0, 0, imx214_test_pattern_menu); aac37a3a763d1f André Apitzsch 2024-12-20 1077 for (i = 0; i < 4; i++) { aac37a3a763d1f André Apitzsch 2024-12-20 1078 /* aac37a3a763d1f André Apitzsch 2024-12-20 1079 * The assumption is that aac37a3a763d1f André Apitzsch 2024-12-20 1080 * V4L2_CID_TEST_PATTERN_GREENR == V4L2_CID_TEST_PATTERN_RED + 1 aac37a3a763d1f André Apitzsch 2024-12-20 1081 * V4L2_CID_TEST_PATTERN_BLUE == V4L2_CID_TEST_PATTERN_RED + 2 aac37a3a763d1f André Apitzsch 2024-12-20 1082 * V4L2_CID_TEST_PATTERN_GREENB == V4L2_CID_TEST_PATTERN_RED + 3 aac37a3a763d1f André Apitzsch 2024-12-20 1083 */ aac37a3a763d1f André Apitzsch 2024-12-20 1084 v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops, aac37a3a763d1f André Apitzsch 2024-12-20 1085 V4L2_CID_TEST_PATTERN_RED + i, aac37a3a763d1f André Apitzsch 2024-12-20 1086 IMX214_TESTP_COLOUR_MIN, aac37a3a763d1f André Apitzsch 2024-12-20 1087 IMX214_TESTP_COLOUR_MAX, aac37a3a763d1f André Apitzsch 2024-12-20 1088 IMX214_TESTP_COLOUR_STEP, aac37a3a763d1f André Apitzsch 2024-12-20 1089 IMX214_TESTP_COLOUR_MAX); aac37a3a763d1f André Apitzsch 2024-12-20 1090 /* The "Solid color" pattern is white by default */ aac37a3a763d1f André Apitzsch 2024-12-20 1091 } aac37a3a763d1f André Apitzsch 2024-12-20 1092 4f302d004bd0fc André Apitzsch 2023-12-06 1093 imx214->unit_size = v4l2_ctrl_new_std_compound(ctrl_hdlr, 4f302d004bd0fc André Apitzsch 2023-12-06 1094 NULL, 4f302d004bd0fc André Apitzsch 2023-12-06 1095 V4L2_CID_UNIT_CELL_SIZE, a5bd42aafb0684 Hans Verkuil 2025-02-03 1096 v4l2_ctrl_ptr_create((void *)&unit_size), a5bd42aafb0684 Hans Verkuil 2025-02-03 1097 v4l2_ctrl_ptr_create(NULL), a5bd42aafb0684 Hans Verkuil 2025-02-03 1098 v4l2_ctrl_ptr_create(NULL)); 4f302d004bd0fc André Apitzsch 2023-12-06 1099 2ae9f9780d8097 André Apitzsch 2023-12-06 1100 v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx214_ctrl_ops, &props); 2ae9f9780d8097 André Apitzsch 2023-12-06 1101 4f302d004bd0fc André Apitzsch 2023-12-06 1102 ret = ctrl_hdlr->error; 4f302d004bd0fc André Apitzsch 2023-12-06 1103 if (ret) { 4f302d004bd0fc André Apitzsch 2023-12-06 1104 v4l2_ctrl_handler_free(ctrl_hdlr); 4f302d004bd0fc André Apitzsch 2023-12-06 1105 dev_err(imx214->dev, "failed to add controls: %d\n", ret); 4f302d004bd0fc André Apitzsch 2023-12-06 1106 return ret; 4f302d004bd0fc André Apitzsch 2023-12-06 1107 } 4f302d004bd0fc André Apitzsch 2023-12-06 1108 7407c0acdb2ff0 André Apitzsch 2025-06-30 @1109 ret = imx214_pll_update(imx214); ^^^^^^ This adds an unchecked dereference. 7407c0acdb2ff0 André Apitzsch 2025-06-30 1110 if (ret < 0) { 7407c0acdb2ff0 André Apitzsch 2025-06-30 1111 v4l2_ctrl_handler_free(ctrl_hdlr); 7407c0acdb2ff0 André Apitzsch 2025-06-30 1112 dev_err(imx214->dev, "failed to update PLL\n"); 7407c0acdb2ff0 André Apitzsch 2025-06-30 1113 return ret; 7407c0acdb2ff0 André Apitzsch 2025-06-30 1114 } 7407c0acdb2ff0 André Apitzsch 2025-06-30 1115 4f302d004bd0fc André Apitzsch 2023-12-06 1116 imx214->sd.ctrl_handler = ctrl_hdlr; 4f302d004bd0fc André Apitzsch 2023-12-06 1117 4f302d004bd0fc André Apitzsch 2023-12-06 1118 return 0; 4f302d004bd0fc André Apitzsch 2023-12-06 1119 }; 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