From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A08591373 for ; Fri, 6 Feb 2026 00:05:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770336300; cv=none; b=tudOGH6tL/aH/nTH9Ph91Euvw7Z9+Z7k756C/pRR4dw4WOVZDGwMZZ0oKue3/R5NMFd6VDjFaN+jRK7wADy0C60dGrR9EUr0dPw77pZr+7hiwLRSKh0sD4TgV54H1RDrEiiLgolZ3kntjPg5ChKTKOD3/T0L1fqs6FbK0XANQWw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770336300; c=relaxed/simple; bh=qvbP0GGWheXqryRE1stVEc7b6SUWhDa6wK7t/cEozCI=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=B2zZRat1o4fDlXAqJLf6pvYfxQEO8917IpxDPY0lzALdlGv5VV/MPJ92eiuPUDtizq3qDAOaAuy6oDF2qIUjXtDaPCQKnwFtfhNpeIYyekXCKwq2NESlFrPHd8DxkBMrL5hwB2Lnh5KY8b8A5Mtfy8wW7eegBSgN/d/W/C1rjLo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com; spf=fail smtp.mailfrom=gmail.com; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=gmail.com From: Nam Cao To: ChanSoo Shin , andy@kernel.org Cc: gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-staging@lists.linux.dev, ChanSoo Shin Subject: Re: [PATCH v5] fbtft: limit dirty rows based on damage range In-Reply-To: <20260128203938.962414-1-csshin9928@gmail.com> References: <20260128203938.962414-1-csshin9928@gmail.com> Date: Fri, 06 Feb 2026 01:04:45 +0100 Message-ID: <87y0l668ki.fsf@yellow.woof> Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Hi ChanSoo, ChanSoo Shin writes: > Instead of marking the entire display as dirty, calculate the start > and end rows based on the damage offset and length and only mark the > affected rows dirty. This reduces unnecessary full framebuffer updates > for partial writes. > > Signed-off-by: ChanSoo Shin This looks useful and I prefer to see it applied. I understand lack of testing is the main obstacle. Are you still trying to get it merged? If not, I can take over. Nam