tree: https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git v5.4/mcp25xxfd head: cdcc21e4acc1a753bc4fb151b938ba292ecf686b commit: 6499ad52b2ad766769d55b8d59df0d36db848e95 [5/99] can: mcp25xxfd: initial commit If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> New smatch warnings: drivers/net/can/spi/mcp25xxfd/mcp25xxfd-core.c:1305 mcp25xxfd_irq() warn: ignoring unreachable code. Old smatch warnings: drivers/net/can/spi/mcp25xxfd/mcp25xxfd-core.c:1667 mcp25xxfd_probe() warn: passing zero to 'PTR_ERR' drivers/net/can/spi/mcp25xxfd/mcp25xxfd-core.c:1675 mcp25xxfd_probe() warn: passing zero to 'PTR_ERR' # https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git/commit/?id=6499ad52b2ad766769d55b8d59df0d36db848e95 git remote add mkl-can-next https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git git remote update mkl-can-next git checkout 6499ad52b2ad766769d55b8d59df0d36db848e95 vim +1305 drivers/net/can/spi/mcp25xxfd/mcp25xxfd-core.c 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1280 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1281 if (IS_ENABLED(CONFIG_CAN_MCP25XXFD_DEBUG) && 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1282 intf_pending & ~(MCP25XXFD_CAN_INT_MODIF | 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1283 MCP25XXFD_CAN_INT_TEFIF | 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1284 MCP25XXFD_CAN_INT_RXIF | 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1285 MCP25XXFD_CAN_INT_SERRIF | 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1286 MCP25XXFD_CAN_INT_IVMIF)) { 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1287 netdev_err(priv->ndev, "%s: intf_pending=0x%04x\n", 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1288 __func__, intf_pending); 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1289 mcp25xxfd_dump(priv); 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1290 } 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1291 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1292 /* ACK interrupts that need to be ACKed in the 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1293 * MCP25XXFD_CAN_INT register. 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1294 */ 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1295 intf_pending_clearable = intf_pending & 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1296 MCP25XXFD_CAN_INT_INTERRUPT_CLEARABLE; 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1297 if (intf_pending_clearable) { 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1298 err = regmap_update_bits(priv->map, MCP25XXFD_CAN_INT, 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1299 intf_pending_clearable, 0x0); 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1300 if (err) 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1301 goto out_fail; 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1302 } 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1303 } while (1); 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1304 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 @1305 return handled; I guess the while (1) loop has no breaks. 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1306 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1307 out_fail: 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1308 mcp25xxfd_dump(priv); 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1309 mcp25xxfd_chip_interrupts_disable(priv); 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1310 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1311 return handled; 6499ad52b2ad76 Marc Kleine-Budde 2019-10-14 1312 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
