7:29 p.m.
Hi Imre,
url:
https://github.com/0day-ci/linux/commits/Imre-Deak/drm-i915-gen12-Add-dis...
base: git://anongit.freedesktop.org/drm-intel for-linux-next
config: x86_64-randconfig-m001-20210115 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com>
New smatch warnings:
drivers/gpu/drm/i915/display/intel_display.c:15299
intel_atomic_prepare_plane_clear_colors() warn: taking sizeof binop
vim +15299 drivers/gpu/drm/i915/display/intel_display.c
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15273 static void intel_atomic_prepare_plane_clear_colors(struct
intel_atomic_state *state)
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15274 {
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15275 struct drm_device *dev = state->base.dev;
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15276 struct drm_i915_private *i915 = to_i915(dev);
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15277 struct intel_plane *plane;
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15278 struct intel_plane_state *plane_state;
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15279 int i;
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15280
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15281 for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15282 struct drm_framebuffer *fb = plane_state->hw.fb;
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15283 struct drm_i915_gem_object *obj;
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15284 int ret;
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15285
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15286 if (!fb ||
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15287 fb->modifier != I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC)
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15288 continue;
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15289
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15290 obj = intel_fb_obj(fb);
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15291 /*
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15292 * The layout of the fast clear color value expected by HW:
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15293 * - 4 x 4 bytes per-channel value (in surface type specific
float/int format)
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15294 * - 8 bytes native color value used by the display
(converted/written by GPU during
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15295 * a fast clear operation using the above per-channel values)
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15296 */
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15297 ret = i915_gem_object_read_from_page(obj,
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15298 fb->offsets[2] + 16,
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 @15299 sizeof(&plane_state->ccval),
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15300 &plane_state->ccval);
This is a bug in Smatch and it's quite complicated to fix... But the
sizeof() is still probably wrong. It should be the size of the u64
instead of the address.
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15301 /*
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15302 * The obj is pinned and synced against GPU writes already, so
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15303 * the above can't normally fail.
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15304 */
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15305 drm_WARN_ON(&i915->drm, ret);
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15306 }
d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada
2021-01-14 15307 }
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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org