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X-CSE-ConnectionGUID: ZKVGGac3Su62c+aAU9z5ww== X-CSE-MsgGUID: gYUnxMl/SOCFyymw8koVzg== X-IronPort-AV: E=McAfee;i="6800,10657,11922"; a="94341354" X-IronPort-AV: E=Sophos;i="6.27,134,1787036400"; d="scan'208";a="94341354" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Oct 2026 08:16:16 -0700 X-CSE-ConnectionGUID: 18W00y6bRuyQjmIaZDpv5Q== X-CSE-MsgGUID: FUmvh4u3SlmTvrijgo+rbw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,134,1787036400"; d="scan'208";a="303953355" Received: from igk-lkp-server01.igk.intel.com (HELO 3fb566d470b1) ([10.211.93.152]) by fmviesa001.fm.intel.com with ESMTP; 01 Oct 2026 08:16:14 -0700 Received: from kbuild by 3fb566d470b1 with local (Exim 4.98.2) (envelope-from ) id 1xCIW4-0000000007v-1S2N; Thu, 01 Oct 2026 15:16:12 +0000 Date: Thu, 01 Oct 2026 17:15:53 +0200 From: kernel test robot To: Dave Penkler Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org Subject: drivers/gpib/cb7210/cb7210.c:120:32: sparse: sparse: cast to restricted __le16 Message-ID: <202610011729.ZtctXAPk-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: Hi Dave, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 551c722f40809618230001baccf219193e22fc5a commit: e6ab504633e4c06e35377ecf3c8cbc304de79858 staging: gpib: Destage gpib date: 10 months ago config: m68k-randconfig-r2304-20261001 (https://download.01.org/0day-ci/archive/20261001/202610011729.ZtctXAPk-lkp@intel.com/config) compiler: m68k-linux-gcc (GCC) 8.5.0 sparse: v0.6.5-rc1 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261001/202610011729.ZtctXAPk-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: e6ab504633e4 ("staging: gpib: Destage gpib") | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202610011729.ZtctXAPk-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> drivers/gpib/cb7210/cb7210.c:120:32: sparse: sparse: cast to restricted __le16 >> drivers/gpib/cb7210/cb7210.c:120:32: sparse: sparse: cast to restricted __le16 >> drivers/gpib/cb7210/cb7210.c:120:32: sparse: sparse: cast to restricted __le16 >> drivers/gpib/cb7210/cb7210.c:120:32: sparse: sparse: cast to restricted __le16 drivers/gpib/cb7210/cb7210.c:148:24: sparse: sparse: cast to restricted __le16 drivers/gpib/cb7210/cb7210.c:148:24: sparse: sparse: cast to restricted __le16 drivers/gpib/cb7210/cb7210.c:148:24: sparse: sparse: cast to restricted __le16 drivers/gpib/cb7210/cb7210.c:148:24: sparse: sparse: cast to restricted __le16 drivers/gpib/cb7210/cb7210.c: note: in included file (through arch/m68k/include/asm/io.h, include/linux/io.h, include/linux/irq.h, include/asm-generic/hardirq.h, ...): arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer vim +120 drivers/gpib/cb7210/cb7210.c e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 78 e8d9c91abf5ad9 drivers/staging/gpib/cb7210/cb7210.c Michael Rubin 2025-04-09 79 static int fifo_read(struct gpib_board *board, struct cb7210_priv *cb_priv, u8 *buffer, e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 80 size_t length, int *end, size_t *bytes_read) e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 81 { e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 82 ssize_t retval = 0; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 83 struct nec7210_priv *nec_priv = &cb_priv->nec7210_priv; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 84 int hs_status; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 85 u16 word; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 86 unsigned long flags; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 87 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 88 *bytes_read = 0; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 89 if (cb_priv->fifo_iobase == 0) { 82e3508046f9bc drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2025-02-20 90 dev_err(board->gpib_dev, "fifo iobase is zero!\n"); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 91 return -EIO; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 92 } e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 93 *end = 0; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 94 if (length <= cb7210_fifo_size) { 82e3508046f9bc drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2025-02-20 95 dev_err(board->gpib_dev, " bug! fifo read length < fifo size\n"); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 96 return -EINVAL; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 97 } e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 98 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 99 input_fifo_enable(board, 1); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 100 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 101 while (*bytes_read + cb7210_fifo_size < length) { e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 102 nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, HR_DMAI); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 103 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 104 if (wait_event_interruptible(board->wait, e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 105 (cb_priv->in_fifo_half_full && e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 106 have_fifo_word(cb_priv)) || e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 107 test_bit(RECEIVED_END_BN, &nec_priv->state) || e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 108 test_bit(DEV_CLEAR_BN, &nec_priv->state) || e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 109 test_bit(TIMO_NUM, &board->status))) { e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 110 retval = -ERESTARTSYS; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 111 nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, 0); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 112 break; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 113 } e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 114 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 115 spin_lock_irqsave(&board->spinlock, flags); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 116 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 117 nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, 0); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 118 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 119 while (have_fifo_word(cb_priv)) { e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 @120 word = inw(cb_priv->fifo_iobase + DIR); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 121 buffer[(*bytes_read)++] = word & 0xff; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 122 buffer[(*bytes_read)++] = (word >> 8) & 0xff; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 123 } e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 124 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 125 cb_priv->in_fifo_half_full = 0; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 126 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 127 hs_status = cb7210_read_byte(cb_priv, HS_STATUS); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 128 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 129 spin_unlock_irqrestore(&board->spinlock, flags); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 130 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 131 if (test_and_clear_bit(RECEIVED_END_BN, &nec_priv->state)) { e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 132 *end = 1; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 133 break; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 134 } e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 135 if (hs_status & HS_FIFO_FULL) e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 136 break; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 137 if (test_bit(TIMO_NUM, &board->status)) { e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 138 retval = -ETIMEDOUT; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 139 break; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 140 } e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 141 if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) { e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 142 retval = -EINTR; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 143 break; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 144 } e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 145 } e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 146 hs_status = cb7210_read_byte(cb_priv, HS_STATUS); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 147 if (hs_status & HS_RX_LSB_NOT_EMPTY) { e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 148 word = inw(cb_priv->fifo_iobase + DIR); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 149 buffer[(*bytes_read)++] = word & 0xff; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 150 } e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 151 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 152 input_fifo_enable(board, 0); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 153 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 154 if (wait_event_interruptible(board->wait, e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 155 test_bit(READ_READY_BN, &nec_priv->state) || e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 156 test_bit(RECEIVED_END_BN, &nec_priv->state) || e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 157 test_bit(DEV_CLEAR_BN, &nec_priv->state) || e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 158 test_bit(TIMO_NUM, &board->status))) { e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 159 retval = -ERESTARTSYS; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 160 } e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 161 if (test_bit(TIMO_NUM, &board->status)) e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 162 retval = -ETIMEDOUT; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 163 if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 164 retval = -EINTR; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 165 if (test_bit(READ_READY_BN, &nec_priv->state)) { e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 166 nec7210_set_handshake_mode(board, nec_priv, HR_HLDA); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 167 buffer[(*bytes_read)++] = nec7210_read_data_in(board, nec_priv, end); e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 168 } e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 169 e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 170 return retval; e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 171 } e9dc69956d4d9b drivers/staging/gpib/cb7210/cb7210.c Dave Penkler 2024-09-18 172 :::::: The code at line 120 was first introduced by commit :::::: e9dc69956d4d9bf4a81d35995ce9229ff5e4cad5 staging: gpib: Add Computer Boards GPIB driver :::::: TO: Dave Penkler :::::: CC: Greg Kroah-Hartman -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki