tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git pending-fixes head: 5c6ff2f54dee49d1c75558d08c0a4fb50f0ede14 commit: be7ecbd240b2f9ec544d3ce6fccf4cec3cd15dca [99/240] soc: fsl: qe: convert QE interrupt controller to platform_device config: openrisc-randconfig-m031-20210811 (attached as .config) compiler: or1k-linux-gcc (GCC) 10.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; smatch warnings: drivers/soc/fsl/qe/qe_ic.c:438 qe_ic_init() warn: unsigned 'qe_ic->virq_low' is never less than zero. vim +438 drivers/soc/fsl/qe/qe_ic.c 407 408 static int qe_ic_init(struct platform_device *pdev) 409 { 410 struct device *dev = &pdev->dev; 411 void (*low_handler)(struct irq_desc *desc); 412 void (*high_handler)(struct irq_desc *desc); 413 struct qe_ic *qe_ic; 414 struct resource *res; 415 struct device_node *node = pdev->dev.of_node; 416 417 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 418 if (res == NULL) { 419 dev_err(dev, "no memory resource defined\n"); 420 return -ENODEV; 421 } 422 423 qe_ic = devm_kzalloc(dev, sizeof(*qe_ic), GFP_KERNEL); 424 if (qe_ic == NULL) 425 return -ENOMEM; 426 427 qe_ic->regs = devm_ioremap(dev, res->start, resource_size(res)); 428 if (qe_ic->regs == NULL) { 429 dev_err(dev, "failed to ioremap() registers\n"); 430 return -ENODEV; 431 } 432 433 qe_ic->hc_irq = qe_ic_irq_chip; 434 435 qe_ic->virq_high = platform_get_irq(pdev, 0); 436 qe_ic->virq_low = platform_get_irq(pdev, 1); 437 439 return -ENODEV; 440 } 441 442 if (qe_ic->virq_high != qe_ic->virq_low) { 443 low_handler = qe_ic_cascade_low; 444 high_handler = qe_ic_cascade_high; 445 } else { 446 low_handler = qe_ic_cascade_muxed_mpic; 447 high_handler = NULL; 448 } 449 450 qe_ic->irqhost = irq_domain_add_linear(node, NR_QE_IC_INTS, 451 &qe_ic_host_ops, qe_ic); 452 if (qe_ic->irqhost == NULL) { 453 dev_err(dev, "failed to add irq domain\n"); 454 return -ENODEV; 455 } 456 457 qe_ic_write(qe_ic->regs, QEIC_CICR, 0); 458 459 irq_set_handler_data(qe_ic->virq_low, qe_ic); 460 irq_set_chained_handler(qe_ic->virq_low, low_handler); 461 462 if (qe_ic->virq_high && qe_ic->virq_high != qe_ic->virq_low) { 463 irq_set_handler_data(qe_ic->virq_high, qe_ic); 464 irq_set_chained_handler(qe_ic->virq_high, high_handler); 465 } 466 return 0; 467 } 468 static const struct of_device_id qe_ic_ids[] = { 469 { .compatible = "fsl,qe-ic"}, 470 { .type = "qeic"}, 471 {}, 472 }; 473 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org