From: Sean Paul Date: Mon, 28 Jan 2019 20:42:49 +0000 (-0500) Subject: drm/msm: dpu: Simplify frame_done watchdog timeout calculation X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=2e0391865bd71e076139ca8059bf68469012c27a;p=linux.git drm/msm: dpu: Simplify frame_done watchdog timeout calculation Instead of setting the timeout and then immediately reading it back (along with the hand-rolled msecs_to_jiffies calculation), just calculate it once and set it in both places at the same time. Reviewed-by: Abhinav Kumar Signed-off-by: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/20190128204306.95076-2-sean@poorly.run Signed-off-by: Rob Clark --- diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 3a714695d5365..107abd4b99d21 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -1788,6 +1788,7 @@ void dpu_encoder_kickoff(struct drm_encoder *drm_enc, bool async) { struct dpu_encoder_virt *dpu_enc; struct dpu_encoder_phys *phys; + unsigned long timeout_ms; ktime_t wakeup_time; unsigned int i; @@ -1800,11 +1801,12 @@ void dpu_encoder_kickoff(struct drm_encoder *drm_enc, bool async) trace_dpu_enc_kickoff(DRMID(drm_enc)); - atomic_set(&dpu_enc->frame_done_timeout, - DPU_FRAME_DONE_TIMEOUT * 1000 / - drm_mode_vrefresh(&drm_enc->crtc->state->adjusted_mode)); - mod_timer(&dpu_enc->frame_done_timer, jiffies + - ((atomic_read(&dpu_enc->frame_done_timeout) * HZ) / 1000)); + timeout_ms = DPU_FRAME_DONE_TIMEOUT * 1000 / + drm_mode_vrefresh(&drm_enc->crtc->state->adjusted_mode); + + atomic_set(&dpu_enc->frame_done_timeout, timeout_ms); + mod_timer(&dpu_enc->frame_done_timer, + jiffies + msecs_to_jiffies(timeout_ms)); /* All phys encs are ready to go, trigger the kickoff */ _dpu_encoder_kickoff_phys(dpu_enc, async);