From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 9BA293AF67A; Mon, 27 Apr 2026 16:49:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777308560; cv=none; b=NtKisRQhFCvGySs3fwkc7SynlCzWgcDI3MiDIlNUIWYznmXauKlu87ntflVtEWyv5LrabYssRRjfaEn46jUjoBmmpwd4eCNjkS2+MIGvtQbDVIiGXrvHQBeRPcTIkmkepUZciPHWscjKgd/FX2e+WEjiQqk0JHnazULQdXmMGK0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777308560; c=relaxed/simple; bh=mj5As0GWRJmA2OjIOAHpeqmnmLzc+dDu17tB8pMRSWI=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=T0WSmXzV9AR8Soddg8mzkUdXtDeMkBddfi0JEWhLu1PYUdbwM+aQwHFgI/3mbJfrX2sTq4w+5vns2gH2EiwizNmt7/yFkT4vYkrnubEYcP5UmO/nSi2N1CZoQRT6eSBYoNCDa8AkleFTcJSnLefJYF5sqGz7Nmiyfv1pEJqSh2M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=tu4aoxtr; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="tu4aoxtr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 39E7CC19425; Mon, 27 Apr 2026 16:49:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1777308560; bh=mj5As0GWRJmA2OjIOAHpeqmnmLzc+dDu17tB8pMRSWI=; h=Subject:To:Cc:From:Date:From; b=tu4aoxtrslhzZZdC5FQlL7w0Gemkea/GzhD25IriQ3go7AoQ3Ub1FC63b4DEFpA4n ung5MaiXwcYdEBulCZU13cZXN+6CdJrwln4su/Fs9s1sS57mV49jmngStwhNXfbiCE 8lhyEx6J6dbE+9b+NEpKH4CiYuZCK6c8E5g3jPY0= Subject: Patch "firmware: google: framebuffer: Do not mark framebuffer as busy" has been added to the 5.10-stable tree To: briannorris@chromium.org,chrome-platform@lists.linux.dev,gregkh@linuxfoundation.org,jwerner@chromium.org,samuel@sholland.org,tzimmermann@suse.de,tzungbi@kernel.org Cc: From: Date: Mon, 27 Apr 2026 10:48:18 -0600 Message-ID: <2026042717-stuffing-ending-2a69@gregkh> Precedence: bulk X-Mailing-List: chrome-platform@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit X-stable: commit X-Patchwork-Hint: ignore This is a note to let you know that I've just added the patch titled firmware: google: framebuffer: Do not mark framebuffer as busy to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: firmware-google-framebuffer-do-not-mark-framebuffer-as-busy.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >From f3850d399de3b6142b02315227ef9e772ed0c302 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Tue, 17 Feb 2026 16:56:12 +0100 Subject: firmware: google: framebuffer: Do not mark framebuffer as busy From: Thomas Zimmermann commit f3850d399de3b6142b02315227ef9e772ed0c302 upstream. Remove the flag IORESOURCE_BUSY flag from coreboot's framebuffer resource. It prevents simpledrm from successfully requesting the range for its own use; resulting in errors such as [ 2.775430] simple-framebuffer simple-framebuffer.0: [drm] could not acquire memory region [mem 0x80000000-0x80407fff flags 0x80000200] As with other uses of simple-framebuffer, the simple-framebuffer device should only declare it's I/O resources, but not actively use them. Signed-off-by: Thomas Zimmermann Fixes: 851b4c14532d ("firmware: coreboot: Add coreboot framebuffer driver") Acked-by: Tzung-Bi Shih Acked-by: Julius Werner Cc: Samuel Holland Cc: Greg Kroah-Hartman Cc: Tzung-Bi Shih Cc: Brian Norris Cc: Julius Werner Cc: chrome-platform@lists.linux.dev Cc: # v4.18+ Link: https://patch.msgid.link/20260217155836.96267-3-tzimmermann@suse.de Signed-off-by: Greg Kroah-Hartman --- drivers/firmware/google/framebuffer-coreboot.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/firmware/google/framebuffer-coreboot.c +++ b/drivers/firmware/google/framebuffer-coreboot.c @@ -50,7 +50,7 @@ static int framebuffer_probe(struct core return -ENODEV; memset(&res, 0, sizeof(res)); - res.flags = IORESOURCE_MEM | IORESOURCE_BUSY; + res.flags = IORESOURCE_MEM; res.name = "Coreboot Framebuffer"; res.start = fb->physical_address; length = PAGE_ALIGN(fb->y_resolution * fb->bytes_per_line); Patches currently in stable-queue which might be from tzimmermann@suse.de are queue-5.10/firmware-google-framebuffer-do-not-mark-framebuffer-as-busy.patch