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bh=ARkQwwXp46qHaDGhQonNpynwAlr7PreOrd1MuuvCEMo=; b=phpA8jjiWzyXUZ++WtZ9/LSUf0QEV5ybbmr8UPjhAueKyvZQ6vW33pAz9NknLVz0YVpZu0 qMqLcZgAWEq7ZdUX7as3nKwufeb6icpWm+XiyeZycd6/YsbcRTO2CmUJYO9QRq5dyUS/Ej a9bsP+QgN+XkKNBp694qv9QLG8Iu7/HWGKDyTWkT1Dv09TrgukcZp+Sz3kS3eAnUMb8EDA v9/7AFPFo/7R8zp1SGUelDQ8bcsihpI8+i/8By6CGUASxSAkqut7VQPan/lL2qTl0ySiCM w4YslW1McCxRXc0WmR5zXbMEhPiMFLRyEueFH5l2z2AGWJO+6t85GaiuWg/0Ug== Message-ID: <9f670a6d-7c1c-49bb-8d84-6b3834a95f14@bootlin.com> Date: Fri, 21 Feb 2025 10:59:01 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] drm/atomic-helper: Add a note in drm_atomic_helper_reset_crtc() kernel-doc To: Herve Codina , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Luca Ceresoli , Thomas Petazzoni References: <20250220140406.593314-1-herve.codina@bootlin.com> Content-Language: en-US From: Louis Chauvet Autocrypt: addr=louis.chauvet@bootlin.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgdeileejfecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfitefpfffkpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedtudenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhepkfffgggfuffvfhfhjggtgfesthekredttddvjeenucfhrhhomhepnfhouhhishcuvehhrghuvhgvthcuoehlohhuihhsrdgthhgruhhvvghtsegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpedviedvvefhjedtvdevkedthfelueevgfffudeftdejleefgfevjeeiveehudfggfenucffohhmrghinhepkhgvrhhnvghlrdhorhhgpdgsohhothhlihhnrdgtohhmnecukfhppedvtddtudemkeeiudemgedugedtmegtkeeitdemheguiedumeeifeefleemieeirgeimegvtdejheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedvtddtudemkeeiudemgedugedtmegtkeeitdemheguiedumeeifeefleemieeirgeimegvtdejhedphhgvlhhopeglkffrggeimedvtddtudemkeeiudemgedugedtmegtkeeitdemheguiedumeeifeefleemieeirgeimegvtdejhegnpdhmrghilhhfrhhomheplhhouhhishdrtghhrghuvhgvthessghoohhtlhhinhdrtghomhdpnhgspghrtghpthhtohepuddtpdhrtghpthhtohephhgvrhhvvgdrtghoughinhgrsegsohhothhlihhnrdgtohhmpdhrt ghpthhtohepmhgrrghrthgvnhdrlhgrnhhkhhhorhhstheslhhinhhugidrihhnthgvlhdrtghomhdprhgtphhtthhopehmrhhiphgrrhgusehkvghrnhgvlhdrohhrghdprhgtphhtthhopehtiihimhhmvghrmhgrnhhnsehsuhhsvgdruggvpdhrtghpthhtoheprghirhhlihgvugesghhmrghilhdrtghomhdprhgtphhtthhopehsihhmohhnrgesfhhffihllhdrtghhpdhrtghpthhtohepughrihdquggvvhgvlheslhhishhtshdrfhhrvggvuggvshhkthhophdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrgh X-GND-Sasl: louis.chauvet@bootlin.com Le 21/02/2025 à 10:51, Simona Vetter a écrit : > On Thu, Feb 20, 2025 at 03:04:06PM +0100, Herve Codina wrote: >> As suggested in [0], add a note indicating that >> drm_atomic_helper_reset_crtc() can be a no-op in some cases. >> >> [0]:https://lore.kernel.org/all/Z7XfnPGDYspwG42y@phenom.ffwll.local/ >> >> Signed-off-by: Herve Codina > > Reviewed-by: Simona Vetter > > I'm assuming you or someone else at bootling has commit rights? Yes, I have! > Otherwise > I guess on Maxime to get that sorted. > -Sima Applied on drm-misc-next, thanks! Louis Chauvet >> --- >> This patch applies on top of the following commit available in drm-misc >> ab83b7f6a0c1 ("drm/atomic-helper: Introduce drm_atomic_helper_reset_crtc()") >> >> drivers/gpu/drm/drm_atomic_helper.c | 4 ++++ >> 1 file changed, 4 insertions(+) >> >> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c >> index 0a636c398578..1f93b0a855de 100644 >> --- a/drivers/gpu/drm/drm_atomic_helper.c >> +++ b/drivers/gpu/drm/drm_atomic_helper.c >> @@ -3371,6 +3371,10 @@ EXPORT_SYMBOL(drm_atomic_helper_disable_all); >> * This implies a reset of all active components available between the CRTC and >> * connectors. >> * >> + * NOTE: This relies on resetting &drm_crtc_state.connectors_changed. >> + * For drivers which optimize out unnecessary modesets this will result in >> + * a no-op commit, achieving nothing. >> + * >> * Returns: >> * 0 on success or a negative error code on failure. >> */ >> -- >> 2.48.1 >> > -- Louis Chauvet, Bootlin Embedded Linux and Kernel engineering https://bootlin.com