Hi Maxime, i applied your patch on top of Linux 5.17-rc4 and it fixes the tones of warnings after boot (see below). So you can have my Tested-by: Stefan Wahren <stefan.wahren@xxxxxxxx> [ 8.341814] ------------[ cut here ]------------ [ 8.341820] WARNING: CPU: 1 PID: 7 at drivers/gpu/drm/vc4/vc4_hdmi_regs.h:417 vc4_hdmi_write_infoframe+0x494/0x69c [vc4] [ 8.341861] Modules linked in: snd_soc_hdmi_codec brcmfmac sha256_generic libsha256 sha256_arm cfg80211 brcmutil hci_uart btbcm bluetooth vc4 ecdh_generic ecc libaes raspberrypi_hwmon snd_soc_core ac97_bus snd_pcm_dmaengine snd_pcm snd_timer bcm2711_thermal crc32_arm_ce snd genet soundcore drm_cma_helper mdio_bcm_unimac nvmem_rmem [ 8.341925] CPU: 1 PID: 7 Comm: kworker/u8:0 Not tainted 5.17.0-rc4 #21 [ 8.341930] Hardware name: BCM2711 [ 8.341933] Workqueue: events_unbound deferred_probe_work_func [ 8.341953] unwind_backtrace from show_stack+0x10/0x14 [ 8.341964] show_stack from dump_stack_lvl+0x40/0x4c [ 8.341974] dump_stack_lvl from __warn+0x14c/0x150 [ 8.341983] __warn from warn_slowpath_fmt+0xac/0xb4 [ 8.341989] warn_slowpath_fmt from vc4_hdmi_write_infoframe+0x494/0x69c [vc4] [ 8.342026] vc4_hdmi_write_infoframe [vc4] from vc4_hdmi_encoder_post_crtc_enable+0x13ec/0x1910 [vc4] [ 8.342072] vc4_hdmi_encoder_post_crtc_enable [vc4] from drm_atomic_helper_commit_modeset_enables+0xa8/0x290 [ 8.342104] drm_atomic_helper_commit_modeset_enables from vc4_atomic_commit_tail+0x230/0x700 [vc4] [ 8.342137] vc4_atomic_commit_tail [vc4] from commit_tail+0xa4/0x194 [ 8.342169] commit_tail from drm_atomic_helper_commit+0x134/0x158 [ 8.342178] drm_atomic_helper_commit from drm_client_modeset_commit_atomic+0x208/0x230 [ 8.342192] drm_client_modeset_commit_atomic from drm_client_modeset_commit_locked+0x44/0x188 [ 8.342206] drm_client_modeset_commit_locked from drm_client_modeset_commit+0x24/0x40 [ 8.342214] drm_client_modeset_commit from __drm_fb_helper_restore_fbdev_mode_unlocked+0x60/0xc4 [ 8.342225] __drm_fb_helper_restore_fbdev_mode_unlocked from drm_fb_helper_set_par+0x38/0x64 [ 8.342233] drm_fb_helper_set_par from fbcon_init+0x2f8/0x49c [ 8.342243] fbcon_init from visual_init+0xbc/0x104 [ 8.342253] visual_init from do_bind_con_driver+0x1f0/0x3fc [ 8.342260] do_bind_con_driver from do_take_over_console+0x84/0x1e0 [ 8.342269] do_take_over_console from do_fbcon_takeover+0x74/0xcc [ 8.342276] do_fbcon_takeover from register_framebuffer+0x208/0x2dc [ 8.342285] register_framebuffer from __drm_fb_helper_initial_config_and_unlock+0x3f0/0x5bc [ 8.342293] __drm_fb_helper_initial_config_and_unlock from drm_fbdev_client_hotplug+0x118/0x1a8 [ 8.342301] drm_fbdev_client_hotplug from drm_fbdev_generic_setup+0xa4/0x1a8 [ 8.342308] drm_fbdev_generic_setup from vc4_drm_bind+0x1b0/0x1b4 [vc4] [ 8.342336] vc4_drm_bind [vc4] from try_to_bring_up_master+0x15c/0x1b4 [ 8.342362] try_to_bring_up_master from component_master_add_with_match+0xc4/0xf8 [ 8.342369] component_master_add_with_match from vc4_platform_drm_probe+0xa8/0xcc [vc4] [ 8.342396] vc4_platform_drm_probe [vc4] from platform_probe+0x5c/0xb8 [ 8.342425] platform_probe from really_probe+0xc0/0x2fc [ 8.342430] really_probe from __driver_probe_device+0x84/0xe4 [ 8.342435] __driver_probe_device from driver_probe_device+0x34/0xd4 [ 8.342440] driver_probe_device from __device_attach_driver+0x88/0xb4 [ 8.342445] __device_attach_driver from bus_for_each_drv+0x54/0xb4 [ 8.342453] bus_for_each_drv from __device_attach+0xdc/0x148 [ 8.342460] __device_attach from bus_probe_device+0x84/0x8c [ 8.342466] bus_probe_device from deferred_probe_work_func+0x7c/0xa8 [ 8.342475] deferred_probe_work_func from process_one_work+0x228/0x524 [ 8.342486] process_one_work from worker_thread+0x40/0x56c [ 8.342493] worker_thread from kthread+0xd8/0xf4 [ 8.342501] kthread from ret_from_fork+0x14/0x1c [ 8.342508] Exception stack(0xc20c3fb0 to 0xc20c3ff8) [ 8.342513] 3fa0: 00000000 00000000 00000000 00000000 [ 8.342518] 3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.342523] 3fe0: 00000000 00000000 00000000 00000000 00000013 00000000 [ 8.342527] ---[ end trace 0000000000000000 ]--- ...
