From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com, Julia Lawall <julia.lawall@inria.fr>
Subject: drivers/tty/serial/cpm_uart.c:1533:5-20: WARNING: Unsigned expression compared with zero: pinfo -> port . irq < 0
Date: Sun, 04 Oct 2026 10:49:30 +0200 [thread overview]
Message-ID: <202610041027.gpXgSTFO-lkp@intel.com> (raw)
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Rosen Penev <rosenp@gmail.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 6addb4f385570ebc11c4eb499a4f1c149f313e84
commit: 831603b3e8aa3892de229fda846b2f859c518699 serial: cpm_uart: replace irq_of_parse_and_map with platform_get_irq
date: 3 months ago
:::::: branch date: 4 hours ago
:::::: commit date: 3 months ago
config: powerpc-randconfig-r2105-20261004 (https://download.01.org/0day-ci/archive/20261004/202610041027.gpXgSTFO-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project d7e4505dd447d115d85fdea45cd71030ac1d86ee)
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: 831603b3e8aa ("serial: cpm_uart: replace irq_of_parse_and_map with platform_get_irq")
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Julia Lawall <julia.lawall@inria.fr>
| Closes: https://lore.kernel.org/r/202610041027.gpXgSTFO-lkp@intel.com/
cocci warnings: (new ones prefixed by >>)
>> drivers/tty/serial/cpm_uart.c:1533:5-20: WARNING: Unsigned expression compared with zero: pinfo -> port . irq < 0
vim +1533 drivers/tty/serial/cpm_uart.c
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1515
9671f09921d93e7 drivers/tty/serial/cpm_uart/cpm_uart_core.c Bill Pemberton 2012-11-19 1516 static int cpm_uart_probe(struct platform_device *ofdev)
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1517 {
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1518 int index = probe_index++;
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1519 struct uart_cpm_port *pinfo = &cpm_uart_ports[index];
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1520 int ret;
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1521
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1522 pinfo->port.line = index;
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1523
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1524 if (index >= UART_NR)
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1525 return -ENODEV;
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1526
696faedd616e202 drivers/tty/serial/cpm_uart/cpm_uart_core.c Jingoo Han 2013-05-23 1527 platform_set_drvdata(ofdev, pinfo);
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1528
bd86ef378412fc3 drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2009-04-03 1529 /* initialize the device pointer for the port */
bd86ef378412fc3 drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2009-04-03 1530 pinfo->port.dev = &ofdev->dev;
bd86ef378412fc3 drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2009-04-03 1531
831603b3e8aa389 drivers/tty/serial/cpm_uart.c Rosen Penev 2026-06-06 1532 pinfo->port.irq = platform_get_irq(ofdev, 0);
831603b3e8aa389 drivers/tty/serial/cpm_uart.c Rosen Penev 2026-06-06 @1533 if (pinfo->port.irq < 0)
831603b3e8aa389 drivers/tty/serial/cpm_uart.c Rosen Penev 2026-06-06 1534 return pinfo->port.irq;
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1535
30963b2f75bfdbb drivers/tty/serial/cpm_uart/cpm_uart_core.c Christophe Leroy 2022-09-30 1536 ret = cpm_uart_init_port(ofdev->dev.of_node, pinfo);
30963b2f75bfdbb drivers/tty/serial/cpm_uart/cpm_uart_core.c Christophe Leroy 2022-09-30 1537 if (!ret)
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1538 return uart_add_one_port(&cpm_reg, &pinfo->port);
30963b2f75bfdbb drivers/tty/serial/cpm_uart/cpm_uart_core.c Christophe Leroy 2022-09-30 1539
30963b2f75bfdbb drivers/tty/serial/cpm_uart/cpm_uart_core.c Christophe Leroy 2022-09-30 1540 return ret;
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1541 }
7ae870368d198af drivers/serial/cpm_uart/cpm_uart_core.c Scott Wood 2007-07-17 1542
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-10-04 8:49 UTC|newest]
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