Hi Hermes, kernel test robot noticed the following build warnings: [auto build test WARNING on drm/drm-next] [also build test WARNING on drm-exynos/exynos-drm-next drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-misc/drm-misc-next drm-tip/drm-tip linus/master v6.11 next-20240923] [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/Hermes-Wu/drm-bridge-it6505-fix-AUX-read-use-aux-fifo/20240923-175041 base: git://anongit.freedesktop.org/drm/drm drm-next patch link: https://lore.kernel.org/r/20240923094826.13471-3-Hermes.Wu%40ite.com.tw patch subject: [PATCH v3 2/3] drm/bridge: it6505: HDCP CTS fail on repeater items config: nios2-randconfig-r073-20240924 (https://download.01.org/0day-ci/archive/20240924/202409241856.OWgR1x3Y-lkp@xxxxxxxxx/config) compiler: nios2-linux-gcc (GCC) 14.1.0 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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202409241856.OWgR1x3Y-lkp@xxxxxxxxx/ smatch warnings: drivers/gpu/drm/bridge/ite-it6505.c:2027 it6505_setup_sha1_input() warn: inconsistent indenting vim +2027 drivers/gpu/drm/bridge/ite-it6505.c b5c84a9edcd418 Allen Chen 2022-01-14 1996 b5c84a9edcd418 Allen Chen 2022-01-14 1997 static int it6505_setup_sha1_input(struct it6505 *it6505, u8 *sha1_input) b5c84a9edcd418 Allen Chen 2022-01-14 1998 { d65feac281ab47 Pin-yen Lin 2023-07-18 1999 struct device *dev = it6505->dev; b5c84a9edcd418 Allen Chen 2022-01-14 2000 u8 binfo[2]; 9665163df60e16 Hermes Wu 2024-09-23 2001 int down_stream_count, err, msg_count = 0; b5c84a9edcd418 Allen Chen 2022-01-14 2002 b5c84a9edcd418 Allen Chen 2022-01-14 2003 err = it6505_get_dpcd(it6505, DP_AUX_HDCP_BINFO, binfo, b5c84a9edcd418 Allen Chen 2022-01-14 2004 ARRAY_SIZE(binfo)); b5c84a9edcd418 Allen Chen 2022-01-14 2005 b5c84a9edcd418 Allen Chen 2022-01-14 2006 if (err < 0) { b5c84a9edcd418 Allen Chen 2022-01-14 2007 dev_err(dev, "Read binfo value Fail"); b5c84a9edcd418 Allen Chen 2022-01-14 2008 return err; b5c84a9edcd418 Allen Chen 2022-01-14 2009 } b5c84a9edcd418 Allen Chen 2022-01-14 2010 b5c84a9edcd418 Allen Chen 2022-01-14 2011 down_stream_count = binfo[0] & 0x7F; b5c84a9edcd418 Allen Chen 2022-01-14 2012 DRM_DEV_DEBUG_DRIVER(dev, "binfo:0x%*ph", (int)ARRAY_SIZE(binfo), b5c84a9edcd418 Allen Chen 2022-01-14 2013 binfo); b5c84a9edcd418 Allen Chen 2022-01-14 2014 b5c84a9edcd418 Allen Chen 2022-01-14 2015 if ((binfo[0] & BIT(7)) || (binfo[1] & BIT(3))) { b5c84a9edcd418 Allen Chen 2022-01-14 2016 dev_err(dev, "HDCP max cascade device exceed"); b5c84a9edcd418 Allen Chen 2022-01-14 2017 return 0; b5c84a9edcd418 Allen Chen 2022-01-14 2018 } b5c84a9edcd418 Allen Chen 2022-01-14 2019 b5c84a9edcd418 Allen Chen 2022-01-14 2020 if (!down_stream_count || b5c84a9edcd418 Allen Chen 2022-01-14 2021 down_stream_count > MAX_HDCP_DOWN_STREAM_COUNT) { b5c84a9edcd418 Allen Chen 2022-01-14 2022 dev_err(dev, "HDCP down stream count Error %d", b5c84a9edcd418 Allen Chen 2022-01-14 2023 down_stream_count); b5c84a9edcd418 Allen Chen 2022-01-14 2024 return 0; b5c84a9edcd418 Allen Chen 2022-01-14 2025 } 9665163df60e16 Hermes Wu 2024-09-23 2026 err = it6505_get_ksvlist(it6505, sha1_input, down_stream_count * 5); b5c84a9edcd418 Allen Chen 2022-01-14 @2027 if (err < 0) b5c84a9edcd418 Allen Chen 2022-01-14 2028 return err; b5c84a9edcd418 Allen Chen 2022-01-14 2029 9665163df60e16 Hermes Wu 2024-09-23 2030 msg_count += down_stream_count * 5; b5c84a9edcd418 Allen Chen 2022-01-14 2031 b5c84a9edcd418 Allen Chen 2022-01-14 2032 it6505->hdcp_down_stream_count = down_stream_count; b5c84a9edcd418 Allen Chen 2022-01-14 2033 sha1_input[msg_count++] = binfo[0]; b5c84a9edcd418 Allen Chen 2022-01-14 2034 sha1_input[msg_count++] = binfo[1]; b5c84a9edcd418 Allen Chen 2022-01-14 2035 b5c84a9edcd418 Allen Chen 2022-01-14 2036 it6505_set_bits(it6505, REG_HDCP_CTRL2, HDCP_EN_M0_READ, b5c84a9edcd418 Allen Chen 2022-01-14 2037 HDCP_EN_M0_READ); b5c84a9edcd418 Allen Chen 2022-01-14 2038 b5c84a9edcd418 Allen Chen 2022-01-14 2039 err = regmap_bulk_read(it6505->regmap, REG_M0_0_7, b5c84a9edcd418 Allen Chen 2022-01-14 2040 sha1_input + msg_count, 8); b5c84a9edcd418 Allen Chen 2022-01-14 2041 b5c84a9edcd418 Allen Chen 2022-01-14 2042 it6505_set_bits(it6505, REG_HDCP_CTRL2, HDCP_EN_M0_READ, 0x00); b5c84a9edcd418 Allen Chen 2022-01-14 2043 b5c84a9edcd418 Allen Chen 2022-01-14 2044 if (err < 0) { b5c84a9edcd418 Allen Chen 2022-01-14 2045 dev_err(dev, " Warning, Read M value Fail"); b5c84a9edcd418 Allen Chen 2022-01-14 2046 return err; b5c84a9edcd418 Allen Chen 2022-01-14 2047 } b5c84a9edcd418 Allen Chen 2022-01-14 2048 b5c84a9edcd418 Allen Chen 2022-01-14 2049 msg_count += 8; b5c84a9edcd418 Allen Chen 2022-01-14 2050 b5c84a9edcd418 Allen Chen 2022-01-14 2051 return msg_count; b5c84a9edcd418 Allen Chen 2022-01-14 2052 } b5c84a9edcd418 Allen Chen 2022-01-14 2053 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
