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Tue, 21 Apr 2026 13:38:17 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id kZsuBcl952kkGQAAD6G6ig (envelope-from ); Tue, 21 Apr 2026 13:38:17 +0000 Message-ID: <79cc30d5-80b5-4d87-a3ad-36d6fad98853@suse.de> Date: Tue, 21 Apr 2026 15:38:16 +0200 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 15/20] drm/drv: Call drm_mode_config_create_state() by default To: Maxime Ripard , Maarten Lankhorst , David Airlie , Simona Vetter , Jonathan Corbet , Shuah Khan , Dmitry Baryshkov , Jyri Sarha , Tomi Valkeinen , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Simon Ser , Harry Wentland , Melissa Wen , Sebastian Wick , Alex Hung , Jani Nikula , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin , Chen-Yu Tsai , Samuel Holland , Dave Stevenson , =?UTF-8?Q?Ma=C3=ADra_Canal?= , Raspberry Pi Kernel Maintenance Cc: dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Daniel Stone , intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev References: <20260320-drm-mode-config-init-v2-0-c63f1134e76c@kernel.org> <20260320-drm-mode-config-init-v2-15-c63f1134e76c@kernel.org> Content-Language: en-US From: Thomas Zimmermann Autocrypt: addr=tzimmermann@suse.de; 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DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:mid,imap1.dmz-prg2.suse.org:helo,suse.com:url] X-Spam-Flag: NO Hi Am 20.03.26 um 17:27 schrieb Maxime Ripard: > Almost all drivers, and our documented skeleton, call > drm_mode_config_reset() prior to calling drm_dev_register() to > initialize its DRM object states. > > Now that we have drm_mode_config_create_state() to create that initial > state if it doesn't exist, we can call it directly in > drm_dev_register(). That way, we know that the initial atomic state will > always be allocated without any boilerplate. > > Signed-off-by: Maxime Ripard > --- > drivers/gpu/drm/drm_drv.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c > index 2915118436ce8a6640cfb0c59936031990727ed1..820106d56ab399a39cac56d98662b5ddbcae8ded 100644 > --- a/drivers/gpu/drm/drm_drv.c > +++ b/drivers/gpu/drm/drm_drv.c > @@ -1097,10 +1097,14 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags) > > if (drm_core_check_feature(dev, DRIVER_MODESET)) { > ret = drm_modeset_register_all(dev); > if (ret) > goto err_unload; > + > + ret = drm_mode_config_create_state(dev); > + if (ret) > + goto err_unload; Way too late. Lets rather go through drivers and call this where they currently call drm_mode_config_reset() for initialization. This can be a single-patch mass conversion IMHO. Best regards Thomas > } > drm_panic_register(dev); > drm_client_sysrq_register(dev); > > DRM_INFO("Initialized %s %d.%d.%d for %s on minor %d\n", > -- -- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Frankenstr. 146, 90461 Nürnberg, Germany, www.suse.com GF: Jochen Jaser, Andrew McDonald, Werner Knoblich, (HRB 36809, AG Nürnberg)