Hi Marek, I love your patch! Perhaps something to improve: [auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on drm-exynos/exynos-drm-next next-20220225] [cannot apply to drm/drm-next drm-tip/drm-tip tegra-drm/drm/tegra/for-next v5.17-rc6] [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/Marek-Vasut/dt-bindings-mxsfb-Add-compatible-for-i-MX8MP/20220228-084809 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: i386-randconfig-a002-20220228 (https://download.01.org/0day-ci/archive/20220228/202202281124.RFKJe01p-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e) 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/d6832d6fb879aabce18d9b451ed1ead1da38c333 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Marek-Vasut/dt-bindings-mxsfb-Add-compatible-for-i-MX8MP/20220228-084809 git checkout d6832d6fb879aabce18d9b451ed1ead1da38c333 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/mxsfb/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/gpu/drm/mxsfb/mxsfb_kms.c:258:3: warning: variable 'ctrl' is uninitialized when used here [-Wuninitialized] ctrl |= CTRL_INV_HS; ^~~~ drivers/gpu/drm/mxsfb/mxsfb_kms.c:255:10: note: initialize the variable 'ctrl' to silence this warning u32 ctrl; ^ = 0 1 warning generated. vim +/ctrl +258 drivers/gpu/drm/mxsfb/mxsfb_kms.c 251 252 static void mxsfb_v8_set_mode(struct mxsfb_drm_private *mxsfb, u32 bus_flags) 253 { 254 struct drm_display_mode *m = &mxsfb->crtc.state->adjusted_mode; 255 u32 ctrl; 256 257 if (m->flags & DRM_MODE_FLAG_PHSYNC) > 258 ctrl |= CTRL_INV_HS; 259 if (m->flags & DRM_MODE_FLAG_PVSYNC) 260 ctrl |= CTRL_INV_VS; 261 /* Make sure Data Enable is high active by default */ 262 if (!(bus_flags & DRM_BUS_FLAG_DE_LOW)) 263 ctrl |= CTRL_INV_DE; 264 if (bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE) 265 ctrl |= CTRL_INV_PXCK; 266 267 writel(ctrl, mxsfb->base + LCDC_CTRL); 268 269 writel(DISP_SIZE_DELTA_Y(m->crtc_vdisplay) | 270 DISP_SIZE_DELTA_X(m->crtc_hdisplay), 271 mxsfb->base + LCDC_V8_DISP_SIZE); 272 273 writel(HSYN_PARA_BP_H(m->htotal - m->hsync_end) | 274 HSYN_PARA_FP_H(m->hsync_start - m->hdisplay), 275 mxsfb->base + LCDC_V8_HSYN_PARA); 276 277 writel(VSYN_PARA_BP_V(m->vtotal - m->vsync_end) | 278 VSYN_PARA_FP_V(m->vsync_start - m->vdisplay), 279 mxsfb->base + LCDC_V8_VSYN_PARA); 280 281 writel(VSYN_HSYN_WIDTH_PW_V(m->vsync_end - m->vsync_start) | 282 VSYN_HSYN_WIDTH_PW_H(m->hsync_end - m->hsync_start), 283 mxsfb->base + LCDC_V8_VSYN_HSYN_WIDTH); 284 285 writel(CTRLDESCL0_1_HEIGHT(m->crtc_vdisplay) | 286 CTRLDESCL0_1_WIDTH(m->crtc_hdisplay), 287 mxsfb->base + LCDC_V8_CTRLDESCL0_1); 288 289 writel(CTRLDESCL0_3_PITCH(mxsfb->crtc.primary->state->fb->pitches[0]), 290 mxsfb->base + LCDC_V8_CTRLDESCL0_3); 291 } 292 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
