Hi Mika, [auto build test ERROR on drm-intel/for-linux-next] [also build test ERROR on v4.13 next-20170908] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Mika-Kahola/drm-i915-dsi-Silence-atomic-update-failure-with-DSI-panel/20170908-160933 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: i386-randconfig-x001-201736 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): drivers/gpu/drm/i915/intel_sprite.c: In function 'intel_pipe_update_end': >> drivers/gpu/drm/i915/intel_sprite.c:209:27: error: 'new_crtc_state' undeclared (first use in this function) if (!intel_crtc_has_type(new_crtc_state, INTEL_OUTPUT_DSI)) { ^~~~~~~~~~~~~~ drivers/gpu/drm/i915/intel_sprite.c:209:27: note: each undeclared identifier is reported only once for each function it appears in vim +/new_crtc_state +209 drivers/gpu/drm/i915/intel_sprite.c 170 171 /** 172 * intel_pipe_update_end() - end update of a set of display registers 173 * @crtc: the crtc of which the registers were updated 174 * @start_vbl_count: start vblank counter (used for error checking) 175 * 176 * Mark the end of an update started with intel_pipe_update_start(). This 177 * re-enables interrupts and verifies the update was actually completed 178 * before a vblank using the value of @start_vbl_count. 179 */ 180 void intel_pipe_update_end(struct intel_crtc *crtc) 181 { 182 enum pipe pipe = crtc->pipe; 183 int scanline_end = intel_get_crtc_scanline(crtc); 184 u32 end_vbl_count = intel_crtc_get_vblank_counter(crtc); 185 ktime_t end_vbl_time = ktime_get(); 186 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 187 188 trace_i915_pipe_update_end(crtc, end_vbl_count, scanline_end); 189 190 /* We're still in the vblank-evade critical section, this can't race. 191 * Would be slightly nice to just grab the vblank count and arm the 192 * event outside of the critical section - the spinlock might spin for a 193 * while ... */ 194 if (crtc->base.state->event) { 195 WARN_ON(drm_crtc_vblank_get(&crtc->base) != 0); 196 197 spin_lock(&crtc->base.dev->event_lock); 198 drm_crtc_arm_vblank_event(&crtc->base, crtc->base.state->event); 199 spin_unlock(&crtc->base.dev->event_lock); 200 201 crtc->base.state->event = NULL; 202 } 203 204 local_irq_enable(); 205 206 if (intel_vgpu_active(dev_priv)) 207 return; 208 > 209 if (!intel_crtc_has_type(new_crtc_state, INTEL_OUTPUT_DSI)) { 210 if (crtc->debug.start_vbl_count && 211 crtc->debug.start_vbl_count != end_vbl_count) { 212 DRM_ERROR("Atomic update failure on pipe %c (start=%u end=%u) time %lld us, min %d, max %d, scanline start %d, end %d\n", 213 pipe_name(pipe), crtc->debug.start_vbl_count, 214 end_vbl_count, 215 ktime_us_delta(end_vbl_time, crtc->debug.start_vbl_time), 216 crtc->debug.min_vbl, crtc->debug.max_vbl, 217 crtc->debug.scanline_start, scanline_end); 218 } 219 #ifdef CONFIG_DRM_I915_DEBUG_VBLANK_EVADE 220 else if (ktime_us_delta(end_vbl_time, crtc->debug.start_vbl_time) > 221 VBLANK_EVASION_TIME_US) 222 DRM_WARN("Atomic update on pipe (%c) took %lld us, max time under evasion is %u us\n", 223 pipe_name(pipe), 224 ktime_us_delta(end_vbl_time, crtc->debug.start_vbl_time), 225 VBLANK_EVASION_TIME_US); 226 #endif 227 } 228 } 229 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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