10:15 p.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 00e4db51259a5f936fec1424b884f029479d3981
commit: 241b507c166fef3e461e5daf562d8e41aa41bf15 drm/msm/dpu: fix "frame done"
timeouts
date: 11 months ago
config: arm64-randconfig-m031-20200811 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
smatch warnings:
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:817 dpu_crtc_enable() error: uninitialized symbol
'request_bandwidth'.
vim +/request_bandwidth +817 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
786
787 static void dpu_crtc_enable(struct drm_crtc *crtc,
788 struct drm_crtc_state *old_crtc_state)
789 {
790 struct dpu_crtc *dpu_crtc;
791 struct drm_encoder *encoder;
792 struct msm_drm_private *priv;
793 bool request_bandwidth;
794
795 if (!crtc || !crtc->dev || !crtc->dev->dev_private) {
796 DPU_ERROR("invalid crtc\n");
797 return;
798 }
799 priv = crtc->dev->dev_private;
800
801 pm_runtime_get_sync(crtc->dev->dev);
802
803 DRM_DEBUG_KMS("crtc%d\n", crtc->base.id);
804 dpu_crtc = to_dpu_crtc(crtc);
805
806 drm_for_each_encoder_mask(encoder, crtc->dev, crtc->state->encoder_mask)
{
807 /* in video mode, we hold an extra bandwidth reference
808 * as we cannot drop bandwidth at frame-done if any
809 * crtc is being used in video mode.
810 */
811 if (dpu_encoder_get_intf_mode(encoder) == INTF_MODE_VIDEO)
812 request_bandwidth = true;
813 dpu_encoder_register_frame_event_callback(encoder,
814 dpu_crtc_frame_event_cb, (void *)crtc);
815 }
816
817 if (request_bandwidth)
818 atomic_inc(&_dpu_crtc_get_kms(crtc)->bandwidth_ref);
819
820 trace_dpu_crtc_enable(DRMID(crtc), true, dpu_crtc);
821 dpu_crtc->enabled = true;
822
823 drm_for_each_encoder_mask(encoder, crtc->dev, crtc->state->encoder_mask)
824 dpu_encoder_assign_crtc(encoder, crtc);
825
826 /* Enable/restore vblank irq handling */
827 drm_crtc_vblank_on(crtc);
828 }
829
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