From nobody Wed Dec 17 06:13:24 2025 Received: from pv50p00im-ztdg10012101.me.com (pv50p00im-ztdg10012101.me.com [17.58.6.49]) (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 1536C194A74 for ; Tue, 14 Jan 2025 15:23:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=17.58.6.49 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736868218; cv=none; b=mOY0nqeSMUJjZd7VWhPuZ2Xzg6bS9466GoQ5dvHMvs93OKjPAcZiQIjCRO8215SUWAX339vvKG5YKl6wG40Xkllc5ZrhZl2UjLEHodwpVrJOhQE90AIEhMpatAKqFbcypViY8EHGPX4I24EXJN4OPRGyVIDCiTL3oseofgAaMvA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736868218; c=relaxed/simple; bh=lGKKT65YT/J1OZuDW42KsMza+DKElVbVsU+/tN1zlqg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=COG8t7hGDytHyEq36z0nc9rlIyvJIly0rhKr4Q+SkMC0efBYO+C3ibctYKpw9liLth9gtXnO9tL0INuNBAkmBfOOtod03m13Y7vXlID+vUJnQL+vx9uZ7qzaSdEiaqGO8x+JNq0fQtJZt4IZrCTmNvJv1c+5u4Bw+gE2yEPW3U0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=icloud.com; spf=pass smtp.mailfrom=icloud.com; dkim=pass (2048-bit key) header.d=icloud.com header.i=@icloud.com header.b=OdfSXwu/; arc=none smtp.client-ip=17.58.6.49 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=icloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=icloud.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=icloud.com header.i=@icloud.com header.b="OdfSXwu/" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=1a1hai; t=1736868216; bh=PyfXevImhm43tCLlxWNyaBzWFsofOvKOTxaHlR/Qr5c=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To: x-icloud-hme; b=OdfSXwu/URj2CfXXkFw0IZNUwisKBCngAr3JT7TVjTsKWiAkhmjN5aItQeAXigkAL 2N8c97iY+Wa2O409dUGj3P49WIDk6DUlMCR1Vv8jlftC+EOKdRVFT41XkuTNj23jaj 9nsCYebyhKyyhaNFiCH2f4TGUG8noQOhgyOef5+8WTEwqEs5YsdFjT5lYBAPjFwfnd TcZQaCXEjF0oweeRDcyNStFx9LRVrnbjYkfoNScl+UH6p6rVv+bwMsIfB7BWh69Raf V7st/9dRA0XUKcYhp+oI5s3kQGThKl+VENAvA6ZHqbqEC8MJSocwQFZv7YJalkaYMv MZ7CjAqwIsBSg== Received: from [192.168.1.26] (pv50p00im-dlb-asmtp-mailmevip.me.com [17.56.9.10]) by pv50p00im-ztdg10012101.me.com (Postfix) with ESMTPSA id 358F2740375; Tue, 14 Jan 2025 15:23:32 +0000 (UTC) From: Zijun Hu Date: Tue, 14 Jan 2025 23:23:04 +0800 Subject: [PATCH v5 2/3] of: reserved-memory: Warn for missing static reserved memory regions Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250114-of_core_fix-v5-2-b8bafd00a86f@quicinc.com> References: <20250114-of_core_fix-v5-0-b8bafd00a86f@quicinc.com> In-Reply-To: <20250114-of_core_fix-v5-0-b8bafd00a86f@quicinc.com> To: Rob Herring , Saravana Kannan , Oreoluwa Babatunde Cc: Zijun Hu , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Zijun Hu , stable@vger.kernel.org X-Mailer: b4 0.14.2 X-Proofpoint-ORIG-GUID: 4Dhg0ki3FumCfmwtl0VcFP6dtH3kaZz7 X-Proofpoint-GUID: 4Dhg0ki3FumCfmwtl0VcFP6dtH3kaZz7 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-01-14_05,2025-01-13_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 mlxlogscore=634 phishscore=0 adultscore=0 clxscore=1015 malwarescore=0 suspectscore=0 mlxscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2308100000 definitions=main-2501140121 X-Apple-Remote-Links: v=1;h=KCk=;charset=UTF-8 From: Zijun Hu For child node of /reserved-memory, its property 'reg' may contain multiple regions, but fdt_scan_reserved_mem_reg_nodes() only takes into account the first region, and miss remaining regions. But there are no simple approach to fix it, so give user warning message when miss remaining regions. Fixes: 8a6e02d0c00e ("of: reserved_mem: Restructure how the reserved memory= regions are processed") Cc: stable@vger.kernel.org Signed-off-by: Zijun Hu --- drivers/of/of_reserved_mem.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 17c57118c4960d8ac502add1904f7f464258f5a1..75e819f66a56139a800dba5e2e0= 044d0bbeb065e 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -263,6 +263,11 @@ void __init fdt_scan_reserved_mem_reg_nodes(void) uname); continue; } + + if (len > t_len) + pr_warn("%s() ignores %d regions in node '%s'\n", + __func__, len / t_len - 1, uname); + base =3D dt_mem_next_cell(dt_root_addr_cells, &prop); size =3D dt_mem_next_cell(dt_root_size_cells, &prop); =20 --=20 2.34.1