Hi Sam, I love your patch! Yet something to improve: [auto build test ERROR on next-20201127] [also build test ERROR on v5.10-rc5] [cannot apply to tegra-drm/drm/tegra/for-next soc/for-next linus/master drm/drm-next v5.10-rc5 v5.10-rc4 v5.10-rc3] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Sam-Ravnborg/drivers-video-W-1-warning-fixes/20201128-040131 base: 6174f05255e65622ff3340257879a4c0f858b0df config: m68k-allmodconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/5a1d55cc719a775ae6c8e96aab317cff47068071 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Sam-Ravnborg/drivers-video-W-1-warning-fixes/20201128-040131 git checkout 5a1d55cc719a775ae6c8e96aab317cff47068071 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from include/linux/timex.h:61, from include/linux/time32.h:13, from include/linux/time.h:60, from include/linux/compat.h:10, from drivers/video/fbdev/aty/atyfb_base.c:51: include/linux/scatterlist.h: In function 'sg_set_buf': arch/m68k/include/asm/page_mm.h:174:49: warning: ordered comparison of pointer with null pointer [-Wextra] 174 | #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory) | ^~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:137:2: note: in expansion of macro 'BUG_ON' 137 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ include/linux/scatterlist.h:137:10: note: in expansion of macro 'virt_addr_valid' 137 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ drivers/video/fbdev/aty/atyfb_base.c: In function 'aty_init': >> drivers/video/fbdev/aty/atyfb_base.c:2375:61: error: 'dac_type' undeclared (first use in this function) 2375 | dac_subtype = (aty_ld_8(SCRATCH_REG1 + 1, par) & 0xF0) | dac_type; | ^~~~~~~~ drivers/video/fbdev/aty/atyfb_base.c:2375:61: note: each undeclared identifier is reported only once for each function it appears in vim +/dac_type +2375 drivers/video/fbdev/aty/atyfb_base.c 1013d26663199f8 drivers/video/aty/atyfb_base.c Antonino A. Daplas 2005-11-07 2348 48c68c4f1b54244 drivers/video/aty/atyfb_base.c Greg Kroah-Hartman 2012-12-21 2349 static int aty_init(struct fb_info *info) ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2350 { ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2351 struct atyfb_par *par = (struct atyfb_par *) info->par; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2352 const char *ramname = NULL, *xtal; 1013d26663199f8 drivers/video/aty/atyfb_base.c Antonino A. Daplas 2005-11-07 2353 int gtb_memsize, has_var = 0; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2354 struct fb_var_screeninfo var; 89c69d2b8eb3ee2 drivers/video/aty/atyfb_base.c Ville Syrjala 2008-07-23 2355 int ret; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2356 ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2357 init_waitqueue_head(&par->vblank.wait); ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2358 spin_lock_init(&par->int_lock); ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2359 ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2360 #ifdef CONFIG_FB_ATY_GX ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2361 if (!M64_HAS(INTEGRATED)) { ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2362 u32 stat0; 5a1d55cc719a775 drivers/video/fbdev/aty/atyfb_base.c Sam Ravnborg 2020-11-27 2363 u8 dac_subtype, clk_type; fe86175bce50bc3 drivers/video/aty/atyfb_base.c Randy Dunlap 2009-02-04 2364 stat0 = aty_ld_le32(CNFG_STAT0, par); ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2365 par->bus_type = (stat0 >> 0) & 0x07; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2366 par->ram_type = (stat0 >> 3) & 0x07; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2367 ramname = aty_gx_ram[par->ram_type]; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2368 /* FIXME: clockchip/RAMDAC probing? */ 5a1d55cc719a775 drivers/video/fbdev/aty/atyfb_base.c Sam Ravnborg 2020-11-27 2369 aty_ld_le32(DAC_CNTL, par); ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2370 #ifdef CONFIG_ATARI ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2371 clk_type = CLK_ATI18818_1; 5a1d55cc719a775 drivers/video/fbdev/aty/atyfb_base.c Sam Ravnborg 2020-11-27 2372 if (((stat0 >> 9) & 0x07) == 0x07) ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2373 dac_subtype = DAC_ATT20C408; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2374 else ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 @2375 dac_subtype = (aty_ld_8(SCRATCH_REG1 + 1, par) & 0xF0) | dac_type; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2376 #else ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2377 dac_subtype = DAC_IBMRGB514; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2378 clk_type = CLK_IBMRGB514; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2379 #endif ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2380 switch (dac_subtype) { ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2381 case DAC_IBMRGB514: ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2382 par->dac_ops = &aty_dac_ibm514; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2383 break; 3a2842480bbef42 drivers/video/aty/atyfb_base.c Antonino A. Daplas 2007-05-08 2384 #ifdef CONFIG_ATARI ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2385 case DAC_ATI68860_B: ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2386 case DAC_ATI68860_C: ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2387 par->dac_ops = &aty_dac_ati68860b; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2388 break; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2389 case DAC_ATT20C408: ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2390 case DAC_ATT21C498: ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2391 par->dac_ops = &aty_dac_att21c498; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2392 break; 3a2842480bbef42 drivers/video/aty/atyfb_base.c Antonino A. Daplas 2007-05-08 2393 #endif ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2394 default: ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2395 PRINTKI("aty_init: DAC type not implemented yet!\n"); ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2396 par->dac_ops = &aty_dac_unsupported; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2397 break; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2398 } ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2399 switch (clk_type) { 0fa67f84f445e8c drivers/video/aty/atyfb_base.c Antonino A. Daplas 2006-06-26 2400 #ifdef CONFIG_ATARI ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2401 case CLK_ATI18818_1: ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2402 par->pll_ops = &aty_pll_ati18818_1; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2403 break; 0fa67f84f445e8c drivers/video/aty/atyfb_base.c Antonino A. Daplas 2006-06-26 2404 #else eba87e8e8d7024d drivers/video/aty/atyfb_base.c Antonino A. Daplas 2006-03-27 2405 case CLK_IBMRGB514: eba87e8e8d7024d drivers/video/aty/atyfb_base.c Antonino A. Daplas 2006-03-27 2406 par->pll_ops = &aty_pll_ibm514; eba87e8e8d7024d drivers/video/aty/atyfb_base.c Antonino A. Daplas 2006-03-27 2407 break; eba87e8e8d7024d drivers/video/aty/atyfb_base.c Antonino A. Daplas 2006-03-27 2408 #endif ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2409 default: ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2410 PRINTKI("aty_init: CLK type not implemented yet!"); ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2411 par->pll_ops = &aty_pll_unsupported; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2412 break; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2413 } ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2414 } ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2415 #endif /* CONFIG_FB_ATY_GX */ ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2416 #ifdef CONFIG_FB_ATY_CT ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2417 if (M64_HAS(INTEGRATED)) { ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2418 par->dac_ops = &aty_dac_ct; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2419 par->pll_ops = &aty_pll_ct; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2420 par->bus_type = PCI; fe86175bce50bc3 drivers/video/aty/atyfb_base.c Randy Dunlap 2009-02-04 2421 par->ram_type = (aty_ld_le32(CNFG_STAT0, par) & 0x07); ee905d0c58a440a drivers/video/aty/atyfb_base.c Ville Syrjala 2009-06-30 2422 if (M64_HAS(XL_MEM)) ee905d0c58a440a drivers/video/aty/atyfb_base.c Ville Syrjala 2009-06-30 2423 ramname = aty_xl_ram[par->ram_type]; ee905d0c58a440a drivers/video/aty/atyfb_base.c Ville Syrjala 2009-06-30 2424 else ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2425 ramname = aty_ct_ram[par->ram_type]; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2426 /* for many chips, the mclk is 67 MHz for SDRAM, 63 MHz otherwise */ ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2427 if (par->pll_limits.mclk == 67 && par->ram_type < SDRAM) ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2428 par->pll_limits.mclk = 63; 159dde93692ef54 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2429 /* Mobility + 32bit memory interface need halved XCLK. */ 159dde93692ef54 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2430 if (M64_HAS(MOBIL_BUS) && par->ram_type == SDRAM32) 159dde93692ef54 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2431 par->pll_limits.xclk = (par->pll_limits.xclk + 1) >> 1; ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2432 } b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2433 #endif c0887eedb4498e2 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-06-27 2434 #ifdef CONFIG_PPC_PMAC 689620100172e24 drivers/video/aty/atyfb_base.c Ville Syrjala 2009-09-22 2435 /* 689620100172e24 drivers/video/aty/atyfb_base.c Ville Syrjala 2009-09-22 2436 * The Apple iBook1 uses non-standard memory frequencies. 689620100172e24 drivers/video/aty/atyfb_base.c Ville Syrjala 2009-09-22 2437 * We detect it and set the frequency manually. 689620100172e24 drivers/video/aty/atyfb_base.c Ville Syrjala 2009-09-22 2438 */ 71a157e8edca551 drivers/video/aty/atyfb_base.c Grant Likely 2010-02-01 2439 if (of_machine_is_compatible("PowerBook2,1")) { c0887eedb4498e2 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-06-27 2440 par->pll_limits.mclk = 70; c0887eedb4498e2 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-06-27 2441 par->pll_limits.xclk = 53; c0887eedb4498e2 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-06-27 2442 } c0887eedb4498e2 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-06-27 2443 #endif ^1da177e4c3f415 drivers/video/aty/atyfb_base.c Linus Torvalds 2005-04-16 2444 b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2445 /* Allow command line to override clocks. */ b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2446 if (pll) b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2447 par->pll_limits.pll_max = pll; b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2448 if (mclk) b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2449 par->pll_limits.mclk = mclk; b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2450 if (xclk) b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2451 par->pll_limits.xclk = xclk; b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2452 b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2453 aty_calc_mem_refresh(par, par->pll_limits.xclk); b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2454 par->pll_per = 1000000/par->pll_limits.pll_max; b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2455 par->mclk_per = 1000000/par->pll_limits.mclk; b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2456 par->xclk_per = 1000000/par->pll_limits.xclk; b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2457 b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2458 par->ref_clk_per = 1000000000000ULL / 14318180; b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2459 xtal = "14.31818"; b4e124c138558a0 drivers/video/aty/atyfb_base.c Ville Syrjala 2007-05-08 2460 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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