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Subjectdrivers/tty/serial/8250/8250_aspeed_vuart.c:501:1: warning: the frame size of 1040 bytes is larger than 1024 bytes
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 37d4e84f765bb3038ddfeebdc5d1cfd7e1ef688f
commit: 8d310c9107a2a3f19dc7bb54dd50f70c65ef5409 drivers/tty/serial/8250: Make Aspeed VUART SIRQ polarity configurable
date: 2 months ago
config: mips-randconfig-a001-20191214 (attached as .config)
compiler: mips64-linux-gcc (GCC) 7.5.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 8d310c9107a2a3f19dc7bb54dd50f70c65ef5409
# save the attached .config to linux build tree
GCC_VERSION=7.5.0 make.cross ARCH=mips

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

drivers/tty/serial/8250/8250_aspeed_vuart.c: In function 'aspeed_vuart_probe':
>> drivers/tty/serial/8250/8250_aspeed_vuart.c:501:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=]
}
^

vim +501 drivers/tty/serial/8250/8250_aspeed_vuart.c

8d310c9107a2a3 Oskar Senft 2019-09-05 373
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 374 static int aspeed_vuart_probe(struct platform_device *pdev)
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 375 {
8d310c9107a2a3 Oskar Senft 2019-09-05 376 struct of_phandle_args sirq_polarity_sense_args;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 377 struct uart_8250_port port;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 378 struct aspeed_vuart *vuart;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 379 struct device_node *np;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 380 struct resource *res;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 381 u32 clk, prop;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 382 int rc;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 383
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 384 np = pdev->dev.of_node;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 385
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 386 vuart = devm_kzalloc(&pdev->dev, sizeof(*vuart), GFP_KERNEL);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 387 if (!vuart)
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 388 return -ENOMEM;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 389
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 390 vuart->dev = &pdev->dev;
5909c0bf9c7a17 Jeremy Kerr 2018-03-27 391 timer_setup(&vuart->unthrottle_timer, aspeed_vuart_unthrottle_exp, 0);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 392
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 393 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 394 vuart->regs = devm_ioremap_resource(&pdev->dev, res);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 395 if (IS_ERR(vuart->regs))
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 396 return PTR_ERR(vuart->regs);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 397
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 398 memset(&port, 0, sizeof(port));
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 399 port.port.private_data = vuart;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 400 port.port.membase = vuart->regs;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 401 port.port.mapbase = res->start;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 402 port.port.mapsize = resource_size(res);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 403 port.port.startup = aspeed_vuart_startup;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 404 port.port.shutdown = aspeed_vuart_shutdown;
989983ea849d94 Jeremy Kerr 2018-03-27 405 port.port.throttle = aspeed_vuart_throttle;
989983ea849d94 Jeremy Kerr 2018-03-27 406 port.port.unthrottle = aspeed_vuart_unthrottle;
989983ea849d94 Jeremy Kerr 2018-03-27 407 port.port.status = UPSTAT_SYNC_FIFO;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 408 port.port.dev = &pdev->dev;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 409
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 410 rc = sysfs_create_group(&vuart->dev->kobj, &aspeed_vuart_attr_group);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 411 if (rc < 0)
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 412 return rc;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 413
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 414 if (of_property_read_u32(np, "clock-frequency", &clk)) {
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 415 vuart->clk = devm_clk_get(&pdev->dev, NULL);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 416 if (IS_ERR(vuart->clk)) {
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 417 dev_warn(&pdev->dev,
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 418 "clk or clock-frequency not defined\n");
cbafe9d5c34673 Alexey Khoroshilov 2017-07-28 419 rc = PTR_ERR(vuart->clk);
cbafe9d5c34673 Alexey Khoroshilov 2017-07-28 420 goto err_sysfs_remove;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 421 }
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 422
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 423 rc = clk_prepare_enable(vuart->clk);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 424 if (rc < 0)
cbafe9d5c34673 Alexey Khoroshilov 2017-07-28 425 goto err_sysfs_remove;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 426
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 427 clk = clk_get_rate(vuart->clk);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 428 }
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 429
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 430 /* If current-speed was set, then try not to change it. */
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 431 if (of_property_read_u32(np, "current-speed", &prop) == 0)
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 432 port.port.custom_divisor = clk / (16 * prop);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 433
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 434 /* Check for shifted address mapping */
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 435 if (of_property_read_u32(np, "reg-offset", &prop) == 0)
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 436 port.port.mapbase += prop;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 437
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 438 /* Check for registers offset within the devices address range */
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 439 if (of_property_read_u32(np, "reg-shift", &prop) == 0)
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 440 port.port.regshift = prop;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 441
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 442 /* Check for fifo size */
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 443 if (of_property_read_u32(np, "fifo-size", &prop) == 0)
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 444 port.port.fifosize = prop;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 445
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 446 /* Check for a fixed line number */
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 447 rc = of_alias_get_id(np, "serial");
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 448 if (rc >= 0)
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 449 port.port.line = rc;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 450
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 451 port.port.irq = irq_of_parse_and_map(np, 0);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 452 port.port.irqflags = IRQF_SHARED;
5909c0bf9c7a17 Jeremy Kerr 2018-03-27 453 port.port.handle_irq = aspeed_vuart_handle_irq;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 454 port.port.iotype = UPIO_MEM;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 455 port.port.type = PORT_16550A;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 456 port.port.uartclk = clk;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 457 port.port.flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 458 | UPF_FIXED_PORT | UPF_FIXED_TYPE | UPF_NO_THRE_TEST;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 459
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 460 if (of_property_read_bool(np, "no-loopback-test"))
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 461 port.port.flags |= UPF_SKIP_TEST;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 462
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 463 if (port.port.fifosize)
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 464 port.capabilities = UART_CAP_FIFO;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 465
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 466 if (of_property_read_bool(np, "auto-flow-control"))
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 467 port.capabilities |= UART_CAP_AFE;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 468
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 469 rc = serial8250_register_8250_port(&port);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 470 if (rc < 0)
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 471 goto err_clk_disable;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 472
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 473 vuart->line = rc;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 474
8d310c9107a2a3 Oskar Senft 2019-09-05 475 rc = of_parse_phandle_with_fixed_args(
8d310c9107a2a3 Oskar Senft 2019-09-05 476 np, "aspeed,sirq-polarity-sense", 2, 0,
8d310c9107a2a3 Oskar Senft 2019-09-05 477 &sirq_polarity_sense_args);
8d310c9107a2a3 Oskar Senft 2019-09-05 478 if (rc < 0) {
8d310c9107a2a3 Oskar Senft 2019-09-05 479 dev_dbg(&pdev->dev,
8d310c9107a2a3 Oskar Senft 2019-09-05 480 "aspeed,sirq-polarity-sense property not found\n");
8d310c9107a2a3 Oskar Senft 2019-09-05 481 } else {
8d310c9107a2a3 Oskar Senft 2019-09-05 482 aspeed_vuart_auto_configure_sirq_polarity(
8d310c9107a2a3 Oskar Senft 2019-09-05 483 vuart, sirq_polarity_sense_args.np,
8d310c9107a2a3 Oskar Senft 2019-09-05 484 sirq_polarity_sense_args.args[0],
8d310c9107a2a3 Oskar Senft 2019-09-05 485 BIT(sirq_polarity_sense_args.args[1]));
8d310c9107a2a3 Oskar Senft 2019-09-05 486 of_node_put(sirq_polarity_sense_args.np);
8d310c9107a2a3 Oskar Senft 2019-09-05 487 }
8d310c9107a2a3 Oskar Senft 2019-09-05 488
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 489 aspeed_vuart_set_enabled(vuart, true);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 490 aspeed_vuart_set_host_tx_discard(vuart, true);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 491 platform_set_drvdata(pdev, vuart);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 492
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 493 return 0;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 494
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 495 err_clk_disable:
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 496 clk_disable_unprepare(vuart->clk);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 497 irq_dispose_mapping(port.port.irq);
cbafe9d5c34673 Alexey Khoroshilov 2017-07-28 498 err_sysfs_remove:
cbafe9d5c34673 Alexey Khoroshilov 2017-07-28 499 sysfs_remove_group(&vuart->dev->kobj, &aspeed_vuart_attr_group);
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 500 return rc;
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 @501 }
7fbcf3afe6e8e1 Jeremy Kerr 2017-05-02 502

:::::: The code at line 501 was first introduced by commit
:::::: 7fbcf3afe6e8e180bfc39fb3f41657fa6e4af55c drivers/serial: Add driver for Aspeed virtual UART

:::::: TO: Jeremy Kerr <jk@ozlabs.org>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation
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