On 25/04/2022 06:26, Vinod Polimera wrote:

BUG: Unable to handle kernel paging request at virtual address 006b6b6b6b6b6be3

Call trace: dpu_vbif_init_memtypes+0x40/0xb8 dpu_runtime_resume+0xcc/0x1c0 pm_generic_runtime_resume+0x30/0x44 __genpd_runtime_resume+0x68/0x7c genpd_runtime_resume+0x134/0x258 __rpm_callback+0x98/0x138 rpm_callback+0x30/0x88 rpm_resume+0x36c/0x49c __pm_runtime_resume+0x80/0xb0 dpu_core_irq_uninstall+0x30/0xb0 dpu_irq_uninstall+0x18/0x24 msm_drm_uninit+0xd8/0x16c

Fixes: 25fdd5933e4 ("drm/msm: Add SDM845 DPU support") Signed-off-by: Vinod Polimera quic_vpolimer@quicinc.com

Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org

Let's merge this fix now. However I think that a proper solution would be to disable pm_runtime once we are in the uninit path.

---

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index 9c346ce..59982d3 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -793,8 +793,10 @@ static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms) for (i = 0; i < dpu_kms->catalog->vbif_count; i++) { u32 vbif_idx = dpu_kms->catalog->vbif[i].id;

• 	if ((vbif_idx < VBIF_MAX) && dpu_kms->hw_vbif[vbif_idx])
  

• 	if ((vbif_idx < VBIF_MAX) && dpu_kms->hw_vbif[vbif_idx]) {
  	dpu_hw_vbif_destroy(dpu_kms->hw_vbif[vbif_idx]);
  

• 		dpu_kms->hw_vbif[vbif_idx] = NULL;
  

• 	}
  

  } }