From 59ba1b2b4825342676300f66d785764be3fcb093 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Fri, 5 Nov 2021 13:20:21 -0700 Subject: drm/msm/devfreq: Fix OPP refcnt leak Reported-by: Douglas Anderson Fixes: 9bc95570175a ("drm/msm: Devfreq tuning") Signed-off-by: Rob Clark Reviewed-by: Douglas Anderson Tested-By: Steev Klimaszewski Reviewed-by: Akhil P Oommen Link: https://lore.kernel.org/r/20211105202021.181092-1-robdclark@gmail.com Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_gpu_devfreq.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/gpu/drm/msm/msm_gpu_devfreq.c') diff --git a/drivers/gpu/drm/msm/msm_gpu_devfreq.c b/drivers/gpu/drm/msm/msm_gpu_devfreq.c index 8b7473f69cb8..3b129161c140 100644 --- a/drivers/gpu/drm/msm/msm_gpu_devfreq.c +++ b/drivers/gpu/drm/msm/msm_gpu_devfreq.c @@ -20,6 +20,10 @@ static int msm_devfreq_target(struct device *dev, unsigned long *freq, struct msm_gpu *gpu = dev_to_gpu(dev); struct dev_pm_opp *opp; + /* + * Note that devfreq_recommended_opp() can modify the freq + * to something that actually is in the opp table: + */ opp = devfreq_recommended_opp(dev, freq, flags); /* @@ -28,6 +32,7 @@ static int msm_devfreq_target(struct device *dev, unsigned long *freq, */ if (gpu->devfreq.idle_freq) { gpu->devfreq.idle_freq = *freq; + dev_pm_opp_put(opp); return 0; } -- cgit v1.2.3 From 26b6f1c870b81ce8a48751a21f363958d2c04cf2 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Sat, 20 Nov 2021 12:01:01 -0800 Subject: drm/msm/gpu: Fix idle_work time This was supposed to be a relative timer, not absolute. Fixes: 658f4c829688 ("drm/msm/devfreq: Add 1ms delay before clamping freq") Signed-off-by: Rob Clark Reviewed-by: Douglas Anderson Link: https://lore.kernel.org/r/20211120200103.1051459-1-robdclark@gmail.com Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_gpu_devfreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/gpu/drm/msm/msm_gpu_devfreq.c') diff --git a/drivers/gpu/drm/msm/msm_gpu_devfreq.c b/drivers/gpu/drm/msm/msm_gpu_devfreq.c index 3b129161c140..4beb42c31900 100644 --- a/drivers/gpu/drm/msm/msm_gpu_devfreq.c +++ b/drivers/gpu/drm/msm/msm_gpu_devfreq.c @@ -233,5 +233,5 @@ void msm_devfreq_idle(struct msm_gpu *gpu) struct msm_gpu_devfreq *df = &gpu->devfreq; msm_hrtimer_queue_work(&df->idle_work, ms_to_ktime(1), - HRTIMER_MODE_ABS); + HRTIMER_MODE_REL); } -- cgit v1.2.3 From 5dbe2711e41818b5474d2119d075d2facc8533dc Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Sat, 20 Nov 2021 12:01:02 -0800 Subject: drm/msm/gpu: Fix check for devices without devfreq Looks like 658f4c829688 ("drm/msm/devfreq: Add 1ms delay before clamping freq") was badly rebased on top of efb8a170a367 ("drm/msm: Fix devfreq NULL pointer dereference on a3xx") and ended up with the NULL check in the wrong place. Fixes: 658f4c829688 ("drm/msm/devfreq: Add 1ms delay before clamping freq") Signed-off-by: Rob Clark Link: https://lore.kernel.org/r/20211120200103.1051459-2-robdclark@gmail.com Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_gpu_devfreq.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_gpu_devfreq.c') diff --git a/drivers/gpu/drm/msm/msm_gpu_devfreq.c b/drivers/gpu/drm/msm/msm_gpu_devfreq.c index 4beb42c31900..384e90c4b2a7 100644 --- a/drivers/gpu/drm/msm/msm_gpu_devfreq.c +++ b/drivers/gpu/drm/msm/msm_gpu_devfreq.c @@ -208,9 +208,6 @@ static void msm_devfreq_idle_work(struct kthread_work *work) struct msm_gpu *gpu = container_of(df, struct msm_gpu, devfreq); unsigned long idle_freq, target_freq = 0; - if (!df->devfreq) - return; - /* * Hold devfreq lock to synchronize with get_dev_status()/ * target() callbacks @@ -232,6 +229,9 @@ void msm_devfreq_idle(struct msm_gpu *gpu) { struct msm_gpu_devfreq *df = &gpu->devfreq; + if (!df->devfreq) + return; + msm_hrtimer_queue_work(&df->idle_work, ms_to_ktime(1), HRTIMER_MODE_REL); } -- cgit v1.2.3