From nobody Sun Feb 8 15:29:22 2026 Received: from out-174.mta1.migadu.com (out-174.mta1.migadu.com [95.215.58.174]) (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 42866355054 for ; Thu, 13 Nov 2025 15:53:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763049184; cv=none; b=crgYcftkLJYSVSf4IVFZdiMRlaZQ2kfBx5Fr9PtILRYuzIB7I3N6lNgv+raMd3CPrIa+6fDp9qy63hFnhW8Q4qYRvophrclX8S4tu7XydMPedfOQxEdptr8ctp7n+tfZT7qpwsNAjoB0j8hnysof8PwGdBvXv2ePc0jjWZhogBI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763049184; c=relaxed/simple; bh=tprO6N0gVwnG1G8yHuIS5dI+Sf8VvxGP72vdtdY0NV0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WfXMAirL/3vqlwp+Z5+YVE3ESTKJTnA12OYItXefwXZwWBCRrHuuEBRBuJecgiR54CqQv66Cc8r0j1N+UnOkQm2IzETYnsKB2soP2gQrZ1MwGcnfps8CQMpQWxWJ2kKzlfhMqmjhutFjqhnqI+YOZYngY0kwk7StAmdM60uZkno= 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=JwjvrLB8; arc=none smtp.client-ip=95.215.58.174 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="JwjvrLB8" 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=1763049181; 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=SdhoUiNDDhmkZBcf7Fv2t++iSbCGwWq7uyL4ru5W8uw=; b=JwjvrLB85U9mDl3W5zTWCoQjGKz4VB6mH1x+vEyjfprXPhN8PSNUYyzt/KDnsfbHgxe05q voihqUjWWU3cx2RzJsxdlLnlzKwPRzrrqoceOe80sxX4FF/5uvTDahgys5djzy3Os/2Il3 3RxDPG0uMlTB+1JwzoD0Q/BeuVvlnek= 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 v2 6/7] of/reserved_mem: Simplify the logic of __reserved_mem_reserve_reg() Date: Thu, 13 Nov 2025 23:51:03 +0800 Message-ID: <20251113155104.226617-7-yuntao.wang@linux.dev> In-Reply-To: <20251113155104.226617-1-yuntao.wang@linux.dev> References: <20251113155104.226617-1-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 | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 2e9ea751ed2d..b8527f3e335e 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -154,17 +154,16 @@ 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; const __be32 *prop; bool nomap; =20 - prop =3D of_get_flat_dt_prop(node, "reg", &len); - if (!prop) + prop =3D of_fdt_get_addr_size_prop(node, "reg", &len); + if (!len) return -ENOENT; =20 - if (len && len % t_len !=3D 0) { + if (len < 0) { pr_err("Reserved memory: invalid reg property in '%s', skipping node.\n", uname); return -EINVAL; @@ -172,9 +171,8 @@ static int __init __reserved_mem_reserve_reg(unsigned l= ong node, =20 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); + while (len-- > 0) { + of_fdt_read_addr_size(prop, &base, &size); =20 if (size && early_init_dt_reserve_memory(base, size, nomap) =3D=3D 0) { /* Architecture specific contiguous memory fixup. */ @@ -187,8 +185,6 @@ 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