From: Marco Crivellari Date: Wed, 5 Nov 2025 10:11:34 +0000 (+0100) Subject: drm/vc4: hdmi: replace use of system_wq with system_percpu_wq X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0ef1dcf4c16bb6d90e8fbf7b18f3d76b79fcde9d;p=thirdparty%2Fkernel%2Flinux.git drm/vc4: hdmi: replace use of system_wq with system_percpu_wq Currently if a user enqueues a work item using schedule_delayed_work() the used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to schedule_work() that is using system_wq and queue_work(), that makes use again of WORK_CPU_UNBOUND. This lack of consistency cannot be addressed without refactoring the API. This patch continues the effort to refactor worqueue APIs, which has begun with the change introducing new workqueues and a new alloc_workqueue flag: commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq") commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag") system_wq should be the per-cpu workqueue, yet in this name nothing makes that clear, so replace system_wq with system_percpu_wq. The old wq (system_wq) will be kept for a few release cycles. Suggested-by: Tejun Heo Signed-off-by: Marco Crivellari Reviewed-by: Maíra Canal Link: https://patch.msgid.link/20251105101134.82064-1-marco.crivellari@suse.com Signed-off-by: Maíra Canal --- diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 9fe605a42df73..00409c5f5ef86 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -823,7 +823,7 @@ static void vc4_hdmi_enable_scrambling(struct drm_encoder *encoder) vc4_hdmi->scdc_enabled = true; - queue_delayed_work(system_wq, &vc4_hdmi->scrambling_work, + queue_delayed_work(system_percpu_wq, &vc4_hdmi->scrambling_work, msecs_to_jiffies(SCRAMBLING_POLLING_DELAY_MS)); } @@ -872,7 +872,7 @@ static void vc4_hdmi_scrambling_wq(struct work_struct *work) drm_scdc_set_high_tmds_clock_ratio(connector, true); drm_scdc_set_scrambling(connector, true); - queue_delayed_work(system_wq, &vc4_hdmi->scrambling_work, + queue_delayed_work(system_percpu_wq, &vc4_hdmi->scrambling_work, msecs_to_jiffies(SCRAMBLING_POLLING_DELAY_MS)); }