From nobody Sun Feb 8 08:22:31 2026 Received: from out-186.mta0.migadu.com (out-186.mta0.migadu.com [91.218.175.186]) (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 D84242FB966; Sat, 15 Nov 2025 13:49:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.186 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763214590; cv=none; b=iDIGtjb7zVhghaK1n9jhXulOlXPk4GHKUNOLDvf08K8F/gDrrHOblnTFOtVbZZvUG2DdQAFPwamnUiF7VjTqZomn+WLIchmC9WvxKWBvHTG14qws/tEQM32h7DbzWPqMzRtqCCNYlrM5KFkf3CHoXs2U5xB/n/gvsiCB7AP01Lk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763214590; c=relaxed/simple; bh=vLfXegOczrFOX7ZwcNE5UI+0u9nsnsz5c/rfTcX+Tqk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=E6vE1WJZgVCNdhftdYeyYdZS4Y1QNvWWCq/4JkTgr4jdeF2VPT7uvvDXJLih9NetvwJyarGtuH5EI3KD95SEJTQcIHeNpfXiA2dWSXkeeM3Slf2wlJu8o++Xp9DFsBWdBihygfm0lJPMZTGpLonEuWp/J8HDPWGvgIfVXxtIKYs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=jD2E1j+C; arc=none smtp.client-ip=91.218.175.186 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="jD2E1j+C" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1763214585; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=b61z+7Zwzsrpkor1DhAY2hNXwtM/8j+ZHIAdx/g/Rtg=; b=jD2E1j+C/wTwHKpn+rlz5hCuBvzOyvU1Z8RyTATDPvQFeqTzzoKbotgjYyHGB22hGw+uPf 8O8NZSSwnTUVtVDlKI339mtqT1k7qZj0PC8PDWJRBprjVurePACusgicLnMZToNxtpJfVI /uT4kdkjA7iRiCiF1QMjFoawMbDsTDY= From: Yuntao Wang To: Rob Herring , Saravana Kannan Cc: Geert Uytterhoeven , Catalin Marinas , James Morse , Baoquan He , Zhen Lei , Ard Biesheuvel , Mark Rutland , Geoff Levand , Andrew Morton , Changyuan Lyu , Alexander Graf , "Mike Rapoport (Microsoft)" , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Yuntao Wang Subject: [PATCH v3 7/8] of/reserved_mem: Simplify the logic of fdt_scan_reserved_mem_reg_nodes() Date: Sat, 15 Nov 2025 21:47:52 +0800 Message-ID: <20251115134753.179931-8-yuntao.wang@linux.dev> In-Reply-To: <20251115134753.179931-1-yuntao.wang@linux.dev> References: <20251115134753.179931-1-yuntao.wang@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Use the existing helper functions to simplify the logic of fdt_scan_reserved_mem_reg_nodes() Signed-off-by: Yuntao Wang --- drivers/of/of_reserved_mem.c | 25 +++++++------------------ 1 file changed, 7 insertions(+), 18 deletions(-) diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 2f1e4450785e..0ceb096c17e6 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -225,12 +225,9 @@ static void __init __rmem_check_for_overlap(void); */ void __init fdt_scan_reserved_mem_reg_nodes(void) { - int t_len =3D (dt_root_addr_cells + dt_root_size_cells) * sizeof(__be32); const void *fdt =3D initial_boot_params; phys_addr_t base, size; - const __be32 *prop; int node, child; - int len; =20 if (!fdt) return; @@ -251,29 +248,21 @@ void __init fdt_scan_reserved_mem_reg_nodes(void) =20 fdt_for_each_subnode(child, fdt, node) { const char *uname; + u64 b, s; =20 - prop =3D of_get_flat_dt_prop(child, "reg", &len); - if (!prop) - continue; if (!of_fdt_device_is_available(fdt, child)) continue; =20 - uname =3D fdt_get_name(fdt, child, NULL); - if (len && len % t_len !=3D 0) { - pr_err("Reserved memory: invalid reg property in '%s', skipping node.\n= ", - uname); + if (!of_flat_dt_get_addr_size(child, "reg", &b, &s)) continue; - } - - if (len > t_len) - pr_warn("%s() ignores %d regions in node '%s'\n", - __func__, len / t_len - 1, uname); =20 - base =3D dt_mem_next_cell(dt_root_addr_cells, &prop); - size =3D dt_mem_next_cell(dt_root_size_cells, &prop); + base =3D b; + size =3D s; =20 - if (size) + if (size) { + uname =3D fdt_get_name(fdt, child, NULL); fdt_reserved_mem_save_node(child, uname, base, size); + } } =20 /* check for overlapping reserved regions */ --=20 2.51.0