tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f1fcbaa18b28dec10281551dfe6ed3a3ed80e3d6 commit: 8f1aaccb04b7cf63135f4e2748226dfa2fb01e3f drm/gma500: Implement client-based fbdev emulation date: 8 weeks ago config: x86_64-randconfig-s032-20230515 compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8f1aaccb04b7cf63135f4e2748226dfa2fb01e3f git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 8f1aaccb04b7cf63135f4e2748226dfa2fb01e3f # save the config file mkdir build_dir && cp config build_dir/.config make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 olddefconfig make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/gma500/ drivers/thermal/intel/int340x_thermal/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202305152201.1x7qT03W-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> drivers/gpu/drm/gma500/fbdev.c:245:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const * @@ got char [noderef] __iomem *screen_base @@ drivers/gpu/drm/gma500/fbdev.c:245:9: sparse: expected void const * drivers/gpu/drm/gma500/fbdev.c:245:9: sparse: got char [noderef] __iomem *screen_base >> drivers/gpu/drm/gma500/fbdev.c:245:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const * @@ got char [noderef] __iomem *screen_base @@ drivers/gpu/drm/gma500/fbdev.c:245:9: sparse: expected void const * drivers/gpu/drm/gma500/fbdev.c:245:9: sparse: got char [noderef] __iomem *screen_base >> drivers/gpu/drm/gma500/fbdev.c:245:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *p @@ got char [noderef] __iomem *screen_base @@ drivers/gpu/drm/gma500/fbdev.c:245:9: sparse: expected void *p drivers/gpu/drm/gma500/fbdev.c:245:9: sparse: got char [noderef] __iomem *screen_base vim +245 drivers/gpu/drm/gma500/fbdev.c 158 159 /* 160 * struct drm_fb_helper_funcs 161 */ 162 163 static int psb_fbdev_fb_probe(struct drm_fb_helper *fb_helper, 164 struct drm_fb_helper_surface_size *sizes) 165 { 166 struct drm_device *dev = fb_helper->dev; 167 struct drm_psb_private *dev_priv = to_drm_psb_private(dev); 168 struct pci_dev *pdev = to_pci_dev(dev->dev); 169 struct fb_info *info; 170 struct drm_framebuffer *fb; 171 struct drm_mode_fb_cmd2 mode_cmd = { }; 172 int size; 173 int ret; 174 struct psb_gem_object *backing; 175 struct drm_gem_object *obj; 176 u32 bpp, depth; 177 178 /* No 24-bit packed mode */ 179 if (sizes->surface_bpp == 24) { 180 sizes->surface_bpp = 32; 181 sizes->surface_depth = 24; 182 } 183 bpp = sizes->surface_bpp; 184 depth = sizes->surface_depth; 185 186 /* 187 * If the mode does not fit in 32 bit then switch to 16 bit to get 188 * a console on full resolution. The X mode setting server will 189 * allocate its own 32-bit GEM framebuffer. 190 */ 191 size = ALIGN(sizes->surface_width * DIV_ROUND_UP(bpp, 8), 64) * 192 sizes->surface_height; 193 size = ALIGN(size, PAGE_SIZE); 194 195 if (size > dev_priv->vram_stolen_size) { 196 sizes->surface_bpp = 16; 197 sizes->surface_depth = 16; 198 } 199 bpp = sizes->surface_bpp; 200 depth = sizes->surface_depth; 201 202 mode_cmd.width = sizes->surface_width; 203 mode_cmd.height = sizes->surface_height; 204 mode_cmd.pitches[0] = ALIGN(mode_cmd.width * DIV_ROUND_UP(bpp, 8), 64); 205 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth); 206 207 size = mode_cmd.pitches[0] * mode_cmd.height; 208 size = ALIGN(size, PAGE_SIZE); 209 210 /* Allocate the framebuffer in the GTT with stolen page backing */ 211 backing = psb_gem_create(dev, size, "fb", true, PAGE_SIZE); 212 if (IS_ERR(backing)) 213 return PTR_ERR(backing); 214 obj = &backing->base; 215 216 fb = psb_framebuffer_create(dev, &mode_cmd, obj); 217 if (IS_ERR(fb)) { 218 ret = PTR_ERR(fb); 219 goto err_drm_gem_object_put; 220 } 221 222 fb_helper->fb = fb; 223 224 info = drm_fb_helper_alloc_info(fb_helper); 225 if (IS_ERR(info)) { 226 ret = PTR_ERR(info); 227 goto err_drm_framebuffer_unregister_private; 228 } 229 230 info->fbops = &psb_fbdev_fb_ops; 231 info->flags = FBINFO_DEFAULT; 232 /* Accessed stolen memory directly */ 233 info->screen_base = dev_priv->vram_addr + backing->offset; 234 info->screen_size = size; 235 236 drm_fb_helper_fill_info(info, fb_helper, sizes); 237 238 info->fix.smem_start = dev_priv->fb_base; 239 info->fix.smem_len = size; 240 info->fix.ywrapstep = 0; 241 info->fix.ypanstep = 0; 242 info->fix.mmio_start = pci_resource_start(pdev, 0); 243 info->fix.mmio_len = pci_resource_len(pdev, 0); 244 > 245 memset(info->screen_base, 0, info->screen_size); 246 247 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ 248 249 dev_dbg(dev->dev, "allocated %dx%d fb\n", fb->width, fb->height); 250 251 return 0; 252 253 err_drm_framebuffer_unregister_private: 254 drm_framebuffer_unregister_private(fb); 255 fb->obj[0] = NULL; 256 drm_framebuffer_cleanup(fb); 257 kfree(fb); 258 err_drm_gem_object_put: 259 drm_gem_object_put(obj); 260 return ret; 261 } 262 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests