Hi, url: https://github.com/0day-ci/linux/commits/kholk11-gmail-com/Add-support-for-the-Sony-Exmor-RS-IMX300-camera-sensor/20201018-203244 base: git://linuxtv.org/media_tree.git master config: x86_64-randconfig-m001-20201022 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> smatch warnings: drivers/media/i2c/imx300.c:2413 imx300_set_framefmt() error: uninitialized symbol 'ret'. vim +/ret +2413 drivers/media/i2c/imx300.c c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2377 static int imx300_set_framefmt(struct imx300 *imx300) c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2378 { c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2379 int ret; c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2380 c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2381 switch (imx300->fmt.code) { c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2382 case MEDIA_BUS_FMT_SRGGB8_1X8: c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2383 fallthrough; c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2384 case MEDIA_BUS_FMT_SGRBG8_1X8: c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2385 fallthrough; c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2386 case MEDIA_BUS_FMT_SGBRG8_1X8: c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2387 fallthrough; These fallthrough annotations are not required. c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2388 case MEDIA_BUS_FMT_SBGGR8_1X8: c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2389 ret = imx300_write_regs(imx300, raw8_framefmt_regs, c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2390 ARRAY_SIZE(raw8_framefmt_regs)); c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2391 if (ret) c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2392 return ret; c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2393 imx300->cur_bps = 8; c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2394 break; c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2395 case MEDIA_BUS_FMT_SRGGB10_1X10: c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2396 fallthrough; c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2397 case MEDIA_BUS_FMT_SGRBG10_1X10: c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2398 fallthrough; c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2399 case MEDIA_BUS_FMT_SGBRG10_1X10: c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2400 fallthrough; It would look a lot nicer with the annotations removed. Fall through is assumed with an empty label. c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2401 case MEDIA_BUS_FMT_SBGGR10_1X10: c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2402 ret = imx300_write_regs(imx300, raw10_framefmt_regs, c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2403 ARRAY_SIZE(raw10_framefmt_regs)); c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2404 if (ret) c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2405 return ret; c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2406 imx300->cur_bps = 10; c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2407 break; No default case. c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2408 } c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2409 c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2410 /* Update the pixel rate to eventually save some power */ c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2411 __v4l2_ctrl_s_ctrl_int64(imx300->pixel_rate, get_pixel_rate(imx300)); c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2412 c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 @2413 return ret; Just "return 0;" It's more readable to return a literal. c82629fb21ade4 AngeloGioacchino Del Regno 2020-10-18 2414 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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