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X-CSE-ConnectionGUID: oCoVXHy3TwmBVefXzZ7GBQ== X-CSE-MsgGUID: w4cosMcZQHWRsJ000nTzhA== X-IronPort-AV: E=McAfee;i="6800,10657,11817"; a="92541624" X-IronPort-AV: E=Sophos;i="6.24,205,1774335600"; d="scan'208";a="92541624" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jun 2026 16:40:57 -0700 X-CSE-ConnectionGUID: UHNGLU2yQFixy2RFF1HWQw== X-CSE-MsgGUID: yXP9cYD1Svq44bZac4gdhg== X-ExtLoop1: 1 Received: from lkp-server01.sh.intel.com (HELO f0d55cb201f0) ([10.239.97.150]) by fmviesa003.fm.intel.com with ESMTP; 14 Jun 2026 16:40:55 -0700 Received: from kbuild by f0d55cb201f0 with local (Exim 4.98.2) (envelope-from ) id 1wYuRg-00000000RHa-27j5; Sun, 14 Jun 2026 23:40:52 +0000 Date: Mon, 15 Jun 2026 07:40:07 +0800 From: kernel test robot To: Johan Hovold Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Wolfram Sang Subject: drivers/i2c/busses/i2c-tegra.c:935:21: sparse: sparse: incorrect type in assignment (different base types) Message-ID: <202606150754.zgRoeRqx-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 8cd9520d35a6c38db6567e97dd93b1f11f185dc6 commit: 73e65c424867fb9396de6d1265228b75e1ee0718 i2c: tegra: enable compile testing on all archs date: 3 months ago config: s390-randconfig-r113-20260614 (https://download.01.org/0day-ci/archive/20260615/202606150754.zgRoeRqx-lkp@intel.com/config) compiler: s390-linux-gcc (GCC) 15.2.0 sparse: v0.6.5-rc1 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260615/202606150754.zgRoeRqx-lkp@intel.com/reproduce) 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 | Fixes: 73e65c424867 ("i2c: tegra: enable compile testing on all archs") | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202606150754.zgRoeRqx-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> drivers/i2c/busses/i2c-tegra.c:935:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [assigned] [usertype] val @@ got restricted __le32 [usertype] @@ drivers/i2c/busses/i2c-tegra.c:935:21: sparse: expected unsigned int [assigned] [usertype] val drivers/i2c/busses/i2c-tegra.c:935:21: sparse: got restricted __le32 [usertype] drivers/i2c/busses/i2c-tegra.c:1012:23: sparse: sparse: cast to restricted __le32 vim +935 drivers/i2c/busses/i2c-tegra.c 77821b4678f93b Shardar Shariff Md 2016-08-31 890 df384fa58a321a Dmitry Osipenko 2020-09-30 891 static int tegra_i2c_empty_rx_fifo(struct tegra_i2c_dev *i2c_dev) df384fa58a321a Dmitry Osipenko 2020-09-30 892 { df384fa58a321a Dmitry Osipenko 2020-09-30 893 size_t buf_remaining = i2c_dev->msg_buf_remaining; 89e3748acd0bf6 Dmitry Osipenko 2020-09-30 894 unsigned int words_to_transfer, rx_fifo_avail; 89e3748acd0bf6 Dmitry Osipenko 2020-09-30 895 u8 *buf = i2c_dev->msg_buf; 89e3748acd0bf6 Dmitry Osipenko 2020-09-30 896 u32 val; df384fa58a321a Dmitry Osipenko 2020-09-30 897 df384fa58a321a Dmitry Osipenko 2020-09-30 898 /* 94a5573f0719cf Dmitry Osipenko 2020-09-30 899 * Catch overflow due to message fully sent before the check for 94a5573f0719cf Dmitry Osipenko 2020-09-30 900 * RX FIFO availability. df384fa58a321a Dmitry Osipenko 2020-09-30 901 */ df384fa58a321a Dmitry Osipenko 2020-09-30 902 if (WARN_ON_ONCE(!(i2c_dev->msg_buf_remaining))) df384fa58a321a Dmitry Osipenko 2020-09-30 903 return -EINVAL; df384fa58a321a Dmitry Osipenko 2020-09-30 904 df384fa58a321a Dmitry Osipenko 2020-09-30 905 if (i2c_dev->hw->has_mst_fifo) { df384fa58a321a Dmitry Osipenko 2020-09-30 906 val = i2c_readl(i2c_dev, I2C_MST_FIFO_STATUS); df384fa58a321a Dmitry Osipenko 2020-09-30 907 rx_fifo_avail = FIELD_GET(I2C_MST_FIFO_STATUS_RX, val); df384fa58a321a Dmitry Osipenko 2020-09-30 908 } else { df384fa58a321a Dmitry Osipenko 2020-09-30 909 val = i2c_readl(i2c_dev, I2C_FIFO_STATUS); df384fa58a321a Dmitry Osipenko 2020-09-30 910 rx_fifo_avail = FIELD_GET(I2C_FIFO_STATUS_RX, val); df384fa58a321a Dmitry Osipenko 2020-09-30 911 } df384fa58a321a Dmitry Osipenko 2020-09-30 912 94a5573f0719cf Dmitry Osipenko 2020-09-30 913 /* round down to exclude partial word at the end of buffer */ df384fa58a321a Dmitry Osipenko 2020-09-30 914 words_to_transfer = buf_remaining / BYTES_PER_FIFO_WORD; df384fa58a321a Dmitry Osipenko 2020-09-30 915 if (words_to_transfer > rx_fifo_avail) df384fa58a321a Dmitry Osipenko 2020-09-30 916 words_to_transfer = rx_fifo_avail; df384fa58a321a Dmitry Osipenko 2020-09-30 917 df384fa58a321a Dmitry Osipenko 2020-09-30 918 i2c_readsl(i2c_dev, buf, I2C_RX_FIFO, words_to_transfer); df384fa58a321a Dmitry Osipenko 2020-09-30 919 df384fa58a321a Dmitry Osipenko 2020-09-30 920 buf += words_to_transfer * BYTES_PER_FIFO_WORD; df384fa58a321a Dmitry Osipenko 2020-09-30 921 buf_remaining -= words_to_transfer * BYTES_PER_FIFO_WORD; df384fa58a321a Dmitry Osipenko 2020-09-30 922 rx_fifo_avail -= words_to_transfer; df384fa58a321a Dmitry Osipenko 2020-09-30 923 df384fa58a321a Dmitry Osipenko 2020-09-30 924 /* 94a5573f0719cf Dmitry Osipenko 2020-09-30 925 * If there is a partial word at the end of buffer, handle it 94a5573f0719cf Dmitry Osipenko 2020-09-30 926 * manually to prevent overwriting past the end of buffer. df384fa58a321a Dmitry Osipenko 2020-09-30 927 */ df384fa58a321a Dmitry Osipenko 2020-09-30 928 if (rx_fifo_avail > 0 && buf_remaining > 0) { df384fa58a321a Dmitry Osipenko 2020-09-30 929 /* df384fa58a321a Dmitry Osipenko 2020-09-30 930 * buf_remaining > 3 check not needed as rx_fifo_avail == 0 df384fa58a321a Dmitry Osipenko 2020-09-30 931 * when (words_to_transfer was > rx_fifo_avail) earlier df384fa58a321a Dmitry Osipenko 2020-09-30 932 * in this function. df384fa58a321a Dmitry Osipenko 2020-09-30 933 */ df384fa58a321a Dmitry Osipenko 2020-09-30 934 val = i2c_readl(i2c_dev, I2C_RX_FIFO); df384fa58a321a Dmitry Osipenko 2020-09-30 @935 val = cpu_to_le32(val); df384fa58a321a Dmitry Osipenko 2020-09-30 936 memcpy(buf, &val, buf_remaining); df384fa58a321a Dmitry Osipenko 2020-09-30 937 buf_remaining = 0; df384fa58a321a Dmitry Osipenko 2020-09-30 938 rx_fifo_avail--; df384fa58a321a Dmitry Osipenko 2020-09-30 939 } df384fa58a321a Dmitry Osipenko 2020-09-30 940 df384fa58a321a Dmitry Osipenko 2020-09-30 941 /* RX FIFO must be drained, otherwise it's an Overflow case. */ df384fa58a321a Dmitry Osipenko 2020-09-30 942 if (WARN_ON_ONCE(rx_fifo_avail)) df384fa58a321a Dmitry Osipenko 2020-09-30 943 return -EINVAL; df384fa58a321a Dmitry Osipenko 2020-09-30 944 df384fa58a321a Dmitry Osipenko 2020-09-30 945 i2c_dev->msg_buf_remaining = buf_remaining; df384fa58a321a Dmitry Osipenko 2020-09-30 946 i2c_dev->msg_buf = buf; df384fa58a321a Dmitry Osipenko 2020-09-30 947 df384fa58a321a Dmitry Osipenko 2020-09-30 948 return 0; df384fa58a321a Dmitry Osipenko 2020-09-30 949 } df384fa58a321a Dmitry Osipenko 2020-09-30 950 :::::: The code at line 935 was first introduced by commit :::::: df384fa58a321a88b22499a43cb5c5d0fb9f5364 i2c: tegra: Reorder location of functions in the code :::::: TO: Dmitry Osipenko :::::: CC: Wolfram Sang -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki