From nobody Sun Feb 8 08:22:31 2026 Received: from out-180.mta0.migadu.com (out-180.mta0.migadu.com [91.218.175.180]) (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 C125C2FB617 for ; Sat, 15 Nov 2025 13:49:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.180 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763214581; cv=none; b=mag/I/zE0m9gCaIxl7zDQ5Gxl3KvHSdlrmsQuq2wk7qeR3gSH48JT5JnwDPn7An0g6/i7H1jrZGpDKpCPzW77IBugueTPXaLrppvOAwFqIW/jTm/m3EG4zYhGXr6ZG98QvKPnhI87V/TKpzhB/7n9gDEfTkf8zB7ovdc5HYGzTQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763214581; c=relaxed/simple; bh=2/gVDE54Ehb2rf84zXfmPE7yjVeewxAOW2mPPmmU+cg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=k3astbywAmxOStAiuKzJChMqR0lR2dv0A3yf9WAY9kzuD2NAZf9btH/RNzqaz1hLRlyN8XxTNNfrsDz5s4uPREdoSFxZ5av2tcVRCVVBYrpNZZ0jfbgHAlkMY8uFC8I+6XEAsuMY1yfzZ9lO5fGpA61Yz/M20JzrFjRv8PgE5Dk= 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=PsuXtbkI; arc=none smtp.client-ip=91.218.175.180 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="PsuXtbkI" 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=1763214576; 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=K4rABBY+wyZvCt1Mj6ISq9EmRtgABT8u7vKdxDl2W9c=; b=PsuXtbkIK6V2o6EZaq3WYfcEE+7z9DaECsrCCmWvCLF00OY+HUrL/1Yyosrpvkcc2nX2pR Y6wZOYeMs5V40wUbF9mtbPM7hx1sAKSFQwAOUcGBJG7UgsOnf7e40AICRfi30uSz5otdOO +RYZoRiRQ2D/O48CHEYLZbfDMyAw8FE= 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 6/8] of/reserved_mem: Simplify the logic of __reserved_mem_reserve_reg() Date: Sat, 15 Nov 2025 21:47:51 +0800 Message-ID: <20251115134753.179931-7-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 __reserved_mem_reserve_reg() Signed-off-by: Yuntao Wang --- drivers/of/of_reserved_mem.c | 23 +++++++++-------------- 1 file changed, 9 insertions(+), 14 deletions(-) diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 2e9ea751ed2d..2f1e4450785e 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -154,27 +154,24 @@ static int __init early_init_dt_reserve_memory(phys_a= ddr_t base, static int __init __reserved_mem_reserve_reg(unsigned long node, const char *uname) { - int t_len =3D (dt_root_addr_cells + dt_root_size_cells) * sizeof(__be32); phys_addr_t base, size; - int len; + int i, len; const __be32 *prop; bool nomap; =20 - prop =3D of_get_flat_dt_prop(node, "reg", &len); + prop =3D of_flat_dt_get_addr_size_prop(node, "reg", &len); if (!prop) return -ENOENT; =20 - if (len && len % t_len !=3D 0) { - pr_err("Reserved memory: invalid reg property in '%s', skipping node.\n", - uname); - return -EINVAL; - } - nomap =3D of_get_flat_dt_prop(node, "no-map", NULL) !=3D NULL; =20 - while (len >=3D t_len) { - base =3D dt_mem_next_cell(dt_root_addr_cells, &prop); - size =3D dt_mem_next_cell(dt_root_size_cells, &prop); + for (i =3D 0; i < len; i++) { + u64 b, s; + + of_flat_dt_read_addr_size(prop, i, &b, &s); + + base =3D b; + size =3D s; =20 if (size && early_init_dt_reserve_memory(base, size, nomap) =3D=3D 0) { /* Architecture specific contiguous memory fixup. */ @@ -187,8 +184,6 @@ static int __init __reserved_mem_reserve_reg(unsigned l= ong node, pr_err("Reserved memory: failed to reserve memory for node '%s': base %= pa, size %lu MiB\n", uname, &base, (unsigned long)(size / SZ_1M)); } - - len -=3D t_len; } return 0; } --=20 2.51.0