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charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi Uwe, First bad commit (maybe !=3D root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git = master head: a90ee4305c4a5df72c11b31dacfdc76e00fcf78a commit: 6f366e86481a7503a821de82930df517dddd4047 fbdev: au1100fb: Make driv= er compilable on non-mips platforms date: 8 months ago config: mips-randconfig-r2308-20261005 (https://download.01.org/0day-ci/arc= hive/20261005/202610051231.2dETaRVc-lkp@intel.com/config) compiler: mips-linux-gcc (GCC) 13.4.0 sparse: v0.6.5-rc1 reproduce (this is a W=3D1 build): (https://download.01.org/0day-ci/archive= /20261005/202610051231.2dETaRVc-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new versio= n of the same patch/commit), kindly add following tags | Fixes: 6f366e86481a ("fbdev: au1100fb: Make driver compilable on non-mips= platforms") | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202610051231.2dETaRVc-lkp@i= ntel.com/ sparse warnings: (new ones prefixed by >>) >> drivers/video/fbdev/au1100fb.c:492:33: sparse: sparse: incorrect type in= assignment (different address spaces) @@ expected char [noderef] __iom= em *screen_base @@ got unsigned char *fb_mem @@ drivers/video/fbdev/au1100fb.c:492:33: sparse: expected char [nodere= f] __iomem *screen_base drivers/video/fbdev/au1100fb.c:492:33: sparse: got unsigned char *fb= _mem vim +492 drivers/video/fbdev/au1100fb.c ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 404 =20 48c68c4f1b5424 drivers/video/au1100fb.c Greg Kroah-Hartman 2012-12-21= 405 static int au1100fb_drv_probe(struct platform_device *dev) ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 406 { 46953e6aab262d drivers/video/fbdev/au1100fb.c Markus Elfring 2018-03-28= 407 struct au1100fb_device *fbdev; 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 408 struct resource *regs_res; 6b1889c14b4606 drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23= 409 struct clk *c; ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 410 =20 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 411 /* Allocate new device private */ db66f0252e2f17 drivers/video/fbdev/au1100fb.c Markus Elfring 2018-03-28= 412 fbdev =3D devm_kzalloc(&dev->dev, sizeof(*fbdev), GFP_KERNEL); 29914badc59b23 drivers/video/fbdev/au1100fb.c Markus Elfring 2018-03-28= 413 if (!fbdev) 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 414 return -ENOMEM; ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 415 =20 d121c3f3cedb84 drivers/video/au1100fb.c Manuel Lauss 2011-09-30= 416 if (au1100fb_setup(fbdev)) d121c3f3cedb84 drivers/video/au1100fb.c Manuel Lauss 2011-09-30= 417 goto failed; ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 418 =20 7a192ec334cab9 drivers/video/au1100fb.c Ming Lei 2009-02-06= 419 platform_set_drvdata(dev, (void *)fbdev); 67f30ad19c4b32 drivers/video/fbdev/au1100fb.c Christoph Hellwig 2019-04-28= 420 fbdev->dev =3D &dev->dev; ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 421 =20 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 422 /* Allocate region for our registers and map them */ d121c3f3cedb84 drivers/video/au1100fb.c Manuel Lauss 2011-09-30= 423 regs_res =3D platform_get_resource(dev, IORESOURCE_MEM, 0); d121c3f3cedb84 drivers/video/au1100fb.c Manuel Lauss 2011-09-30= 424 if (!regs_res) { 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 425 print_err("fail to retrieve registers resource"); 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 426 return -EFAULT; 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 427 } ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 428 =20 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 429 fbdev->info.fix =3D (struct fb_fix_screeninfo) { 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 430 .mmio_start =3D regs_res->start, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 431 .mmio_len =3D resource_size(regs_res), 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 432 .id =3D "AU1100 FB", 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 433 .xpanstep =3D 1, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 434 .ypanstep =3D 1, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 435 .type =3D FB_TYPE_PACKED_PIXELS, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 436 .accel =3D FB_ACCEL_NONE, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 437 }; ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 438 =20 93019734555f8d drivers/video/au1100fb.c Manuel Lauss 2012-03-24= 439 if (!devm_request_mem_region(&dev->dev, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 440 fbdev->info.fix.mmio_start, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 441 fbdev->info.fix.mmio_len, 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 442 DRIVER_NAME)) { c05b7f3d12b945 drivers/video/au1100fb.c Rodolfo Giometti 2006-05-30= 443 print_err("fail to lock memory region at 0x%08lx", 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 444 fbdev->info.fix.mmio_start); 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 445 return -EBUSY; ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 446 } ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 447 =20 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 448 fbdev->regs =3D (struct au1100fb_regs*)KSEG1ADDR(fbdev->info.f= ix.mmio_start); ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 449 =20 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 450 print_dbg("Register memory map at %p", fbdev->regs); 13c89a37c6f6f3 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 451 print_dbg("phys=3D0x%08x, size=3D%zu", fbdev->regs_phys, fbdev= ->regs_len); ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 452 =20 6b1889c14b4606 drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23= 453 c =3D clk_get(NULL, "lcd_intclk"); 6b1889c14b4606 drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23= 454 if (!IS_ERR(c)) { 6b1889c14b4606 drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23= 455 fbdev->lcdclk =3D c; 6b1889c14b4606 drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23= 456 clk_set_rate(c, 48000000); 6b1889c14b4606 drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23= 457 clk_prepare_enable(c); 6b1889c14b4606 drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23= 458 } 6b1889c14b4606 drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23= 459 =20 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 460 /* Allocate the framebuffer to the maximum screen size * nbr of vid= eo buffers */ 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 461 fbdev->fb_len =3D fbdev->panel->xres * fbdev->panel->yres * 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 462 (fbdev->panel->bpp >> 3) * AU1100FB_NBR_VIDEO_BUFFERS; ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 463 =20 93019734555f8d drivers/video/au1100fb.c Manuel Lauss 2012-03-24= 464 fbdev->fb_mem =3D dmam_alloc_coherent(&dev->dev, 1c16697bf9d5b2 drivers/video/au1100fb.c Julia Lawall 2012-01-21= 465 PAGE_ALIGN(fbdev->fb_len), 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 466 &fbdev->fb_phys, GFP_KERNEL); 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 467 if (!fbdev->fb_mem) { 13c89a37c6f6f3 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 468 print_err("fail to allocate framebuffer (size: %zuK))", 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 469 fbdev->fb_len / 1024); ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 470 return -ENOMEM; ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 471 } 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 472 =20 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 473 fbdev->info.fix.smem_start =3D fbdev->fb_phys; 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 474 fbdev->info.fix.smem_len =3D fbdev->fb_len; ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 475 =20 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 476 print_dbg("Framebuffer memory map at %p", fbdev->fb_mem); 13c89a37c6f6f3 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 477 print_dbg("phys=3D0x%pad, size=3D%zuK", &fbdev->fb_phys, fbdev= ->fb_len / 1024); 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 478 =20 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 479 /* load the panel info into the var struct */ 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 480 fbdev->info.var =3D (struct fb_var_screeninfo) { 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 481 .activate =3D FB_ACTIVATE_NOW, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 482 .height =3D -1, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 483 .width =3D -1, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 484 .vmode =3D FB_VMODE_NONINTERLACED, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 485 .bits_per_pixel =3D fbdev->panel->bpp, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 486 .xres =3D fbdev->panel->xres, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 487 .xres_virtual =3D fbdev->panel->xres, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 488 .yres =3D fbdev->panel->yres, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 489 .yres_virtual =3D fbdev->panel->yres, 7939cecdc6fa39 drivers/video/fbdev/au1100fb.c Uwe Kleine-K=C3=B6nig 2026-= 02-16 490 }; ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 491 =20 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= @492 fbdev->info.screen_base =3D fbdev->fb_mem; 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 493 fbdev->info.fbops =3D &au1100fb_ops; ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 494 =20 1c16697bf9d5b2 drivers/video/au1100fb.c Julia Lawall 2012-01-21= 495 fbdev->info.pseudo_palette =3D a86854d0c599b3 drivers/video/fbdev/au1100fb.c Kees Cook 2018-06-12= 496 devm_kcalloc(&dev->dev, 16, sizeof(u32), GFP_KERNEL); 1c16697bf9d5b2 drivers/video/au1100fb.c Julia Lawall 2012-01-21= 497 if (!fbdev->info.pseudo_palette) 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 498 return -ENOMEM; 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 499 =20 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 500 if (fb_alloc_cmap(&fbdev->info.cmap, AU1100_LCD_NBR_PALETTE_ENTRIES= , 0) < 0) { 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 501 print_err("Fail to allocate colormap (%d entries)", 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 502 AU1100_LCD_NBR_PALETTE_ENTRIES); 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 503 return -EFAULT; 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 504 } ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 505 =20 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 506 /* Set h/w registers */ 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 507 au1100fb_setmode(fbdev); ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 508 =20 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 509 /* Register new framebuffer */ 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 510 if (register_framebuffer(&fbdev->info) < 0) { 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 511 print_err("cannot register new framebuffer"); 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 512 goto failed; 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 513 } ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 514 =20 ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 515 return 0; 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 516 =20 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 517 failed: 6b1889c14b4606 drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23= 518 if (fbdev->lcdclk) { 6b1889c14b4606 drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23= 519 clk_disable_unprepare(fbdev->lcdclk); 6b1889c14b4606 drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23= 520 clk_put(fbdev->lcdclk); 6b1889c14b4606 drivers/video/fbdev/au1100fb.c Manuel Lauss 2014-07-23= 521 } 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 522 if (fbdev->info.cmap.len !=3D 0) { 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 523 fb_dealloc_cmap(&fbdev->info.cmap); 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 524 } ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 525 =20 1c16697bf9d5b2 drivers/video/au1100fb.c Julia Lawall 2012-01-21= 526 return -ENODEV; 3b495f2bb749b8 drivers/video/au1100fb.c Pete Popov 2005-04-04= 527 } ^1da177e4c3f41 drivers/video/au1100fb.c Linus Torvalds 2005-04-16= 528 =20 :::::: The code at line 492 was first introduced by commit :::::: 3b495f2bb749b828499135743b9ddec46e34fda8 Au1100 FB driver uplift for= 2.6. :::::: TO: Pete Popov :::::: CC: Ralf Baechle -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki