[openeuler:OLK-6.6 1474/1474] drivers/gpu/drm/amd/amdgpu/../display/dmub/src/dmub_srv.c:484:77: sparse: sparse: Using plain integer as NULL pointer
tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: df4c334beecb4cf58e4e8d63b491aa5ac0a84f46 commit: 2991f29868ddf9a3dd2dd132323ae2a4558b7bb0 [1474/1474] drm/amd/display: Change the DMCUB mailbox memory location from FB to inbox config: x86_64-randconfig-121-20241118 (https://download.01.org/0day-ci/archive/20241201/202412011624.BbzK9R6O-lkp@i...) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241201/202412011624.BbzK9R6O-lkp@i...)
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/202412011624.BbzK9R6O-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
drivers/gpu/drm/amd/amdgpu/../display/dmub/src/dmub_srv.c:484:77: sparse: sparse: Using plain integer as NULL pointer
vim +484 drivers/gpu/drm/amd/amdgpu/../display/dmub/src/dmub_srv.c
457 458 enum dmub_status dmub_srv_calc_mem_info(struct dmub_srv *dmub, 459 const struct dmub_srv_memory_params *params, 460 struct dmub_srv_fb_info *out) 461 { 462 uint8_t *cpu_base; 463 uint64_t gpu_base; 464 uint32_t i; 465 466 if (!dmub->sw_init) 467 return DMUB_STATUS_INVALID; 468 469 memset(out, 0, sizeof(*out)); 470 471 if (params->region_info->num_regions != DMUB_NUM_WINDOWS) 472 return DMUB_STATUS_INVALID; 473 474 cpu_base = (uint8_t *)params->cpu_fb_addr; 475 gpu_base = params->gpu_fb_addr; 476 477 for (i = 0; i < DMUB_NUM_WINDOWS; ++i) { 478 const struct dmub_region *reg = 479 ¶ms->region_info->regions[i]; 480 481 out->fb[i].cpu_addr = cpu_base + reg->base; 482 out->fb[i].gpu_addr = gpu_base + reg->base; 483
484 if (i == DMUB_WINDOW_4_MAILBOX && params->cpu_inbox_addr != 0) {
485 out->fb[i].cpu_addr = (uint8_t *)params->cpu_inbox_addr + reg->base; 486 out->fb[i].gpu_addr = params->gpu_inbox_addr + reg->base; 487 } 488 489 out->fb[i].size = reg->top - reg->base; 490 } 491 492 out->num_fb = DMUB_NUM_WINDOWS; 493 494 return DMUB_STATUS_OK; 495 } 496
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kernel test robot