BCC: lkp(a)intel.com CC: kbuild-all(a)lists.01.org CC: linux-kernel(a)vger.kernel.org TO: Thomas Zimmermann <tzimmermann(a)suse.de&gt; CC: Javier Martinez Canillas <javierm(a)redhat.com&gt; Hi Thomas, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 521a547ced6477c54b4b0cc206000406c221b4d6 commit: 6a99099fe1d6c46cbcd74298eeb386c4b9048f77 drm/display: Move HDCP helpers into display-helper module date: 5 months ago :::::: branch date: 9 hours ago :::::: commit date: 5 months ago config: arc-randconfig-m041-20220919 (https://download.01.org/0day-ci/archive/20220919/202209191450.Y4sMY2Om-lk...) compiler: arceb-elf-gcc (GCC) 12.1.0 If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp(a)intel.com&gt; Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com&gt; smatch warnings: drivers/gpu/drm/display/drm_hdcp_helper.c:254 drm_hdcp_request_srm() error: uninitialized symbol 'fw'. vim +/fw +254 drivers/gpu/drm/display/drm_hdcp_helper.c 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 232 79643fddd6eb2d drivers/gpu/drm/drm_hdcp.c Ramalingam C 2020-02-12 233 static int drm_hdcp_request_srm(struct drm_device *drm_dev, 79643fddd6eb2d drivers/gpu/drm/drm_hdcp.c Ramalingam C 2020-02-12 234 u8 **revoked_ksv_list, u32 *revoked_ksv_cnt) 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 235 { 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 236 char fw_name[36] = "display_hdcp_srm.bin"; 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 237 const struct firmware *fw; 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 238 int ret; 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 239 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 240 ret = request_firmware_direct(&fw, (const char *)fw_name, 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 241 drm_dev->dev); 5fe89a6acd668c drivers/gpu/drm/drm_hdcp.c Sean Paul 2020-04-14 242 if (ret < 0) { 5fe89a6acd668c drivers/gpu/drm/drm_hdcp.c Sean Paul 2020-04-14 243 *revoked_ksv_cnt = 0; 5fe89a6acd668c drivers/gpu/drm/drm_hdcp.c Sean Paul 2020-04-14 244 *revoked_ksv_list = NULL; 5fe89a6acd668c drivers/gpu/drm/drm_hdcp.c Sean Paul 2020-04-14 245 ret = 0; 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 246 goto exit; 5fe89a6acd668c drivers/gpu/drm/drm_hdcp.c Sean Paul 2020-04-14 247 } 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 248 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 249 if (fw->size && fw->data) 79643fddd6eb2d drivers/gpu/drm/drm_hdcp.c Ramalingam C 2020-02-12 250 ret = drm_hdcp_srm_update(fw->data, fw->size, revoked_ksv_list, 79643fddd6eb2d drivers/gpu/drm/drm_hdcp.c Ramalingam C 2020-02-12 251 revoked_ksv_cnt); 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 252 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 253 exit: 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 @254 release_firmware(fw); 79643fddd6eb2d drivers/gpu/drm/drm_hdcp.c Ramalingam C 2020-02-12 255 return ret; 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 256 } 6498bf5800a302 drivers/gpu/drm/drm_hdcp.c Ramalingam C 2019-05-07 257 :::::: The code at line 254 was first introduced by commit :::::: 6498bf5800a302ef69e7f4914e727893f278bb2f drm: revocation check at drm subsystem :::::: TO: Ramalingam C <ramalingam.c(a)intel.com&gt; :::::: CC: Daniel Vetter <daniel.vetter(a)ffwll.ch&gt; -- 0-DAY CI Kernel Test Service https://01.org/lkp