* [deller-fbdev:fbdev-7.0-2 4/7] drivers/video/fbdev/au1100fb.c:448:39: error: call to undeclared function 'KSEG1ADDR'; ISO C99 and later do not support implicit function declarations
@ 2026-06-09 19:06 kernel test robot
2026-06-09 19:26 ` Uwe Kleine-König
0 siblings, 1 reply; 2+ messages in thread
From: kernel test robot @ 2026-06-09 19:06 UTC (permalink / raw)
To: Uwe Kleine-König ; +Cc: oe-kbuild-all, Helge Deller
tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev.git fbdev-7.0-2
head: 0f967cb8ea04486953f85b249b42dda3de842053
commit: 6f366e86481a7503a821de82930df517dddd4047 [4/7] fbdev: au1100fb: Make driver compilable on non-mips platforms
config: mips-randconfig-r054-20260609 (https://download.01.org/0day-ci/archive/20260610/202606100206.xNHV4qAm-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 7917772d7d61384696c61102c08c2ea158e610fa)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260610/202606100206.xNHV4qAm-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
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606100206.xNHV4qAm-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
>> drivers/video/fbdev/au1100fb.c:448:39: error: call to undeclared function 'KSEG1ADDR'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
448 | fbdev->regs = (struct au1100fb_regs*)KSEG1ADDR(fbdev->info.fix.mmio_start);
| ^
>> drivers/video/fbdev/au1100fb.c:448:16: warning: cast to 'struct au1100fb_regs *' from smaller integer type 'int' [-Wint-to-pointer-cast]
448 | fbdev->regs = (struct au1100fb_regs*)KSEG1ADDR(fbdev->info.fix.mmio_start);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning and 1 error generated.
vim +/KSEG1ADDR +448 drivers/video/fbdev/au1100fb.c
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 404
48c68c4f1b54244 drivers/video/au1100fb.c Greg Kroah-Hartman 2012-12-21 405 static int au1100fb_drv_probe(struct platform_device *dev)
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 406 {
46953e6aab262dc drivers/video/fbdev/au1100fb.c Markus Elfring 2018-03-28 407 struct au1100fb_device *fbdev;
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 408 struct resource *regs_res;
6b1889c14b4606b drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23 409 struct clk *c;
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 410
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 411 /* Allocate new device private */
db66f0252e2f17a drivers/video/fbdev/au1100fb.c Markus Elfring 2018-03-28 412 fbdev = devm_kzalloc(&dev->dev, sizeof(*fbdev), GFP_KERNEL);
29914badc59b23e drivers/video/fbdev/au1100fb.c Markus Elfring 2018-03-28 413 if (!fbdev)
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 414 return -ENOMEM;
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 415
d121c3f3cedb846 drivers/video/au1100fb.c Manuel Lauss 2011-09-30 416 if (au1100fb_setup(fbdev))
d121c3f3cedb846 drivers/video/au1100fb.c Manuel Lauss 2011-09-30 417 goto failed;
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 418
7a192ec334cab9f drivers/video/au1100fb.c Ming Lei 2009-02-06 419 platform_set_drvdata(dev, (void *)fbdev);
67f30ad19c4b329 drivers/video/fbdev/au1100fb.c Christoph Hellwig 2019-04-28 420 fbdev->dev = &dev->dev;
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 421
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 422 /* Allocate region for our registers and map them */
d121c3f3cedb846 drivers/video/au1100fb.c Manuel Lauss 2011-09-30 423 regs_res = platform_get_resource(dev, IORESOURCE_MEM, 0);
d121c3f3cedb846 drivers/video/au1100fb.c Manuel Lauss 2011-09-30 424 if (!regs_res) {
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 425 print_err("fail to retrieve registers resource");
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 426 return -EFAULT;
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 427 }
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 428
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 429 fbdev->info.fix = (struct fb_fix_screeninfo) {
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 430 .mmio_start = regs_res->start,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 431 .mmio_len = resource_size(regs_res),
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 432 .id = "AU1100 FB",
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 433 .xpanstep = 1,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 434 .ypanstep = 1,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 435 .type = FB_TYPE_PACKED_PIXELS,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 436 .accel = FB_ACCEL_NONE,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 437 };
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 438
93019734555f8df drivers/video/au1100fb.c Manuel Lauss 2012-03-24 439 if (!devm_request_mem_region(&dev->dev,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 440 fbdev->info.fix.mmio_start,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 441 fbdev->info.fix.mmio_len,
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 442 DRIVER_NAME)) {
c05b7f3d12b9455 drivers/video/au1100fb.c Rodolfo Giometti 2006-05-30 443 print_err("fail to lock memory region at 0x%08lx",
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 444 fbdev->info.fix.mmio_start);
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 445 return -EBUSY;
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 446 }
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 447
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 @448 fbdev->regs = (struct au1100fb_regs*)KSEG1ADDR(fbdev->info.fix.mmio_start);
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 449
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 450 print_dbg("Register memory map at %p", fbdev->regs);
13c89a37c6f6f33 drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 451 print_dbg("phys=0x%08x, size=%zu", fbdev->regs_phys, fbdev->regs_len);
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 452
6b1889c14b4606b drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23 453 c = clk_get(NULL, "lcd_intclk");
6b1889c14b4606b drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23 454 if (!IS_ERR(c)) {
6b1889c14b4606b drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23 455 fbdev->lcdclk = c;
6b1889c14b4606b drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23 456 clk_set_rate(c, 48000000);
6b1889c14b4606b drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23 457 clk_prepare_enable(c);
6b1889c14b4606b drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23 458 }
6b1889c14b4606b drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23 459
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 460 /* Allocate the framebuffer to the maximum screen size * nbr of video buffers */
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 461 fbdev->fb_len = fbdev->panel->xres * fbdev->panel->yres *
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 462 (fbdev->panel->bpp >> 3) * AU1100FB_NBR_VIDEO_BUFFERS;
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 463
93019734555f8df drivers/video/au1100fb.c Manuel Lauss 2012-03-24 464 fbdev->fb_mem = dmam_alloc_coherent(&dev->dev,
1c16697bf9d5b20 drivers/video/au1100fb.c Julia Lawall 2012-01-21 465 PAGE_ALIGN(fbdev->fb_len),
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 466 &fbdev->fb_phys, GFP_KERNEL);
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 467 if (!fbdev->fb_mem) {
13c89a37c6f6f33 drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 468 print_err("fail to allocate framebuffer (size: %zuK))",
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 469 fbdev->fb_len / 1024);
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 470 return -ENOMEM;
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 471 }
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 472
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 473 fbdev->info.fix.smem_start = fbdev->fb_phys;
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 474 fbdev->info.fix.smem_len = fbdev->fb_len;
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 475
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 476 print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
13c89a37c6f6f33 drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 477 print_dbg("phys=0x%pad, size=%zuK", &fbdev->fb_phys, fbdev->fb_len / 1024);
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 478
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 479 /* load the panel info into the var struct */
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 480 fbdev->info.var = (struct fb_var_screeninfo) {
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 481 .activate = FB_ACTIVATE_NOW,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 482 .height = -1,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 483 .width = -1,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 484 .vmode = FB_VMODE_NONINTERLACED,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 485 .bits_per_pixel = fbdev->panel->bpp,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 486 .xres = fbdev->panel->xres,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 487 .xres_virtual = fbdev->panel->xres,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 488 .yres = fbdev->panel->yres,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 489 .yres_virtual = fbdev->panel->yres,
7939cecdc6fa39e drivers/video/fbdev/au1100fb.c Uwe Kleine-König 2026-02-16 490 };
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 491
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 492 fbdev->info.screen_base = fbdev->fb_mem;
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 493 fbdev->info.fbops = &au1100fb_ops;
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 494
1c16697bf9d5b20 drivers/video/au1100fb.c Julia Lawall 2012-01-21 495 fbdev->info.pseudo_palette =
a86854d0c599b32 drivers/video/fbdev/au1100fb.c Kees Cook 2018-06-12 496 devm_kcalloc(&dev->dev, 16, sizeof(u32), GFP_KERNEL);
1c16697bf9d5b20 drivers/video/au1100fb.c Julia Lawall 2012-01-21 497 if (!fbdev->info.pseudo_palette)
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 498 return -ENOMEM;
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 499
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 500 if (fb_alloc_cmap(&fbdev->info.cmap, AU1100_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 501 print_err("Fail to allocate colormap (%d entries)",
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 502 AU1100_LCD_NBR_PALETTE_ENTRIES);
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 503 return -EFAULT;
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 504 }
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 505
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 506 /* Set h/w registers */
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 507 au1100fb_setmode(fbdev);
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 508
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 509 /* Register new framebuffer */
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 510 if (register_framebuffer(&fbdev->info) < 0) {
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 511 print_err("cannot register new framebuffer");
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 512 goto failed;
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 513 }
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 514
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 515 return 0;
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 516
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 517 failed:
6b1889c14b4606b drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23 518 if (fbdev->lcdclk) {
6b1889c14b4606b drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23 519 clk_disable_unprepare(fbdev->lcdclk);
6b1889c14b4606b drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23 520 clk_put(fbdev->lcdclk);
6b1889c14b4606b drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23 521 }
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 522 if (fbdev->info.cmap.len != 0) {
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 523 fb_dealloc_cmap(&fbdev->info.cmap);
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 524 }
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 525
1c16697bf9d5b20 drivers/video/au1100fb.c Julia Lawall 2012-01-21 526 return -ENODEV;
3b495f2bb749b82 drivers/video/au1100fb.c Pete Popov 2005-04-04 527 }
^1da177e4c3f415 drivers/video/au1100fb.c Linus Torvalds 2005-04-16 528
:::::: The code at line 448 was first introduced by commit
:::::: 7939cecdc6fa39ea9e74507a389f31a7a7936b18 fbdev: au1100fb: Don't store device specific data in global variables
:::::: TO: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
:::::: CC: Helge Deller <deller@gmx.de>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [deller-fbdev:fbdev-7.0-2 4/7] drivers/video/fbdev/au1100fb.c:448:39: error: call to undeclared function 'KSEG1ADDR'; ISO C99 and later do not support implicit function declarations
2026-06-09 19:06 [deller-fbdev:fbdev-7.0-2 4/7] drivers/video/fbdev/au1100fb.c:448:39: error: call to undeclared function 'KSEG1ADDR'; ISO C99 and later do not support implicit function declarations kernel test robot
@ 2026-06-09 19:26 ` Uwe Kleine-König
0 siblings, 0 replies; 2+ messages in thread
From: Uwe Kleine-König @ 2026-06-09 19:26 UTC (permalink / raw)
To: kernel test robot; +Cc: oe-kbuild-all, Helge Deller
[-- Attachment #1: Type: text/plain, Size: 1907 bytes --]
On Wed, Jun 10, 2026 at 03:06:45AM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev.git fbdev-7.0-2
> head: 0f967cb8ea04486953f85b249b42dda3de842053
> commit: 6f366e86481a7503a821de82930df517dddd4047 [4/7] fbdev: au1100fb: Make driver compilable on non-mips platforms
> config: mips-randconfig-r054-20260609 (https://download.01.org/0day-ci/archive/20260610/202606100206.xNHV4qAm-lkp@intel.com/config)
> compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 7917772d7d61384696c61102c08c2ea158e610fa)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260610/202606100206.xNHV4qAm-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
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202606100206.xNHV4qAm-lkp@intel.com/
>
> All error/warnings (new ones prefixed by >>):
>
> >> drivers/video/fbdev/au1100fb.c:448:39: error: call to undeclared function 'KSEG1ADDR'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
> 448 | fbdev->regs = (struct au1100fb_regs*)KSEG1ADDR(fbdev->info.fix.mmio_start);
> | ^
> >> drivers/video/fbdev/au1100fb.c:448:16: warning: cast to 'struct au1100fb_regs *' from smaller integer type 'int' [-Wint-to-pointer-cast]
> 448 | fbdev->regs = (struct au1100fb_regs*)KSEG1ADDR(fbdev->info.fix.mmio_start);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 1 warning and 1 error generated.
This is an old bug that was fixed in commit e31a374a99f5 ("fbdev:
au1100fb: Fix build on MIPS64").
Best regards
Uwe
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^ permalink raw reply [flat|nested] 2+ messages in thread
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2026-06-09 19:06 [deller-fbdev:fbdev-7.0-2 4/7] drivers/video/fbdev/au1100fb.c:448:39: error: call to undeclared function 'KSEG1ADDR'; ISO C99 and later do not support implicit function declarations kernel test robot
2026-06-09 19:26 ` Uwe Kleine-König
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