From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 A3DEB3DB63C for ; Wed, 29 Jul 2026 10:35:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785321314; cv=none; b=DAG29vJobzNRADgVOETLWxaKvOFe0srw39hMwQRe43DynTQyauEaEpGp514OvZYZvgg1SQir/3N39CqbIJSm8BxvgLMkQUPFs2LC+PVluy1dbhm5Gzl204WhZEyPqZYtBR/hhIFhLgjH5GBpdMYipg6PhiIpaqRagwIJuD6H0VA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785321314; c=relaxed/simple; bh=BmzzJFEhwZunE3LGS5gHFFh2w5vlC04S3lJ2erJswS4=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=Q7P8L306Enjch4n4y4RIcil8zm7Oq7jU92W36y7JZOM+l+1t6t524xMmROFZvqhQxZrM7dGO+n18WkiNSOvt0zKkB9axQvBl84r31SJxxy6qBqS7ndl/v71VwAOmwATQy9wvisw8kY/B6v+2ztD9NRl4xhFpq+6IMxlSCWbLydA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=AZxR8bxa; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="AZxR8bxa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C10221F000E9; Wed, 29 Jul 2026 10:35:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1785321313; bh=5/UCmr5SXCa1UH4WOMog55mm7ckNxzfQlSxQ3aE16Yg=; h=Subject:To:Cc:From:Date; b=AZxR8bxaIPYaidyXuJF+QaaNFmO8z7MFRArR8MMIjZ/d4LIvN53yak/zuPUAVRenE oz/vlQJbfya91wMkp0hknbrmMMjg2rs3jWgktQ8z7pbRMGFQN8ZNrmtCehf+R6D26D faVj8GY10v02/AjkKQhuFgGbMROPZyYsDy4F/g0M= Subject: FAILED: patch "[PATCH] drm/tegra: fbdev: Remove offset into framebuffer memory" failed to apply to 6.6-stable tree To: tzimmermann@suse.de,stable@vger.kernel.org,treding@nvidia.com Cc: From: Date: Wed, 29 Jul 2026 12:34:52 +0200 Message-ID: <2026072952-backward-riveting-1863@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x a18b6e30ecd69096beda4a0c96d2570900c3879a # git commit -s git send-email --to '' --in-reply-to '2026072952-backward-riveting-1863@gregkh' --subject-prefix 'PATCH 6.6.y' 'HEAD^..' Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From a18b6e30ecd69096beda4a0c96d2570900c3879a Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Tue, 21 Apr 2026 09:29:06 +0200 Subject: [PATCH] drm/tegra: fbdev: Remove offset into framebuffer memory The screen_buffer field in struct fb_info contains the kernel address of the first byte of framebuffer memory. Do not add the display offset. This offset only describes scrolling during scanout. Signed-off-by: Thomas Zimmermann Fixes: de2ba664c30f ("gpu: host1x: drm: Add memory manager and fb") Cc: dri-devel@lists.freedesktop.org Cc: linux-tegra@vger.kernel.org Cc: # v3.10+ Signed-off-by: Thierry Reding Link: https://patch.msgid.link/20260421073646.144712-3-tzimmermann@suse.de diff --git a/drivers/gpu/drm/tegra/fbdev.c b/drivers/gpu/drm/tegra/fbdev.c index 19e39fa54bfa..793849199783 100644 --- a/drivers/gpu/drm/tegra/fbdev.c +++ b/drivers/gpu/drm/tegra/fbdev.c @@ -76,7 +76,6 @@ int tegra_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper, struct fb_info *info = helper->info; unsigned int bytes_per_pixel; struct drm_framebuffer *fb; - unsigned long offset; struct tegra_bo *bo; size_t size; int err; @@ -115,9 +114,6 @@ int tegra_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper, drm_fb_helper_fill_info(info, helper, sizes); - offset = info->var.xoffset * bytes_per_pixel + - info->var.yoffset * fb->pitches[0]; - if (bo->pages) { bo->vaddr = vmap(bo->pages, bo->num_pages, VM_MAP, pgprot_writecombine(PAGE_KERNEL)); @@ -129,9 +125,9 @@ int tegra_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper, } info->flags |= FBINFO_VIRTFB; - info->screen_buffer = bo->vaddr + offset; + info->screen_buffer = bo->vaddr; info->screen_size = size; - info->fix.smem_start = (unsigned long)(bo->iova + offset); + info->fix.smem_start = (unsigned long)(bo->iova); info->fix.smem_len = size; return 0;