From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6B7CFE7716F for ; Wed, 4 Dec 2024 23:31:26 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4Y3Ygd0H7Cz30Tx; Thu, 5 Dec 2024 10:31:25 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2604:1380:45d1:ec00::3" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1733355084; cv=none; b=ALOYSMgkI7K/uTn+vqU0km6ro/OEAG9SoZ82Oe7+/ZV4JhKxeY2kzgm9Jt4J6jA/4zv1U8b6+Q4NHbMaaLsM7NVFQD5TPlGpQ4cnuXh5Czsvi5sfv4Y3R8mjg4BzsxlX8HveNrhYXoJduI3McFYkMbrAdZeQXWK6KLkvQ7DT2zUBNT6ihF6DEsjKqS+4MOMPYd/BTEofi4NDEuf5I8s7W7Yuxo5ygfheowkEw/uvKXhEMPmdbZ+KmlgulFFa4VP4m1p8k5wWMJ76KlsKhrEzJalMtmHM2zySN0Mm+lPBecG0TYaOyxCwPA6qJHnYrR5yk45SUty6rAtrMwzO8gdzvg== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1733355084; c=relaxed/relaxed; bh=LJZHkXM3dpRTS1xpn7u+AstHgHCXCnbAbbq8fG/9tbQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HLyrEdezVg3a2tBmbD8sXhbSDMXJjz/+N2/W/FEurGbgr35CAAzMepmh3PCA56MSDes19elfVKxg3c3SCyFtayF8sjrsckXGysyBQeL1Pv2eJsktSsWND52q2ca477lUA4Ce3tH1iSXyVn22t7QuGZqXPN28h8QK8r2qasJHbz1u2cOmbbSAtifCTWTjeGyjRW6TPU2x/o+YvGv7GSM5VW6KS+4n1ADycx+WUo1rlDwUYwwmlsbs5BTwQfyFdpG6fP29+fq34NmiFAuKkC+xEtPuLFYGFzS9SPiWat8dx8jLZ3Zt40Rn26m6W//aIr8JslT/Gv4tIkzgktdnbreY+g== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=a94rZvoR; dkim-atps=neutral; spf=pass (client-ip=2604:1380:45d1:ec00::3; helo=nyc.source.kernel.org; envelope-from=sashal@kernel.org; receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=a94rZvoR; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=2604:1380:45d1:ec00::3; helo=nyc.source.kernel.org; envelope-from=sashal@kernel.org; receiver=lists.ozlabs.org) Received: from nyc.source.kernel.org (nyc.source.kernel.org [IPv6:2604:1380:45d1:ec00::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Y3Ygb57dmz309W for ; Thu, 5 Dec 2024 10:31:23 +1100 (AEDT) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 9E484A41385; Wed, 4 Dec 2024 23:29:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 67CCBC4CECD; Wed, 4 Dec 2024 23:31:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733355081; bh=UPDQbnLjFtIUDVYYo483+FCn6THQPTwzGxqrRVfxNtk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a94rZvoRbYs+lZ6QMSG+xv38yxT/rI9p110bdikgBKpFF3/8bq+VfLlWRD1oN+tQn tkSfCKkFoH75RzrX/aeZWM6qF6v4GI2s7Byb+xRSpBOaO5DwsAa9hzVSSVs+CdzGb7 il899SbzPIz/zh/NElGwnTVwDpgruy5KT+zZ1VcP4uDqFvnZy4OnYi/gmPuJRDkZt0 kqfJzlIYINYhMGy9sIv+XfUvKp1wdFJYIuX3VnkoZ+zWST29/w5smSdcv3HitdoG02 WV25DJy1AIaUG+41d5KTBdtdBnD1lFH8XfuH8loSuVacCwXd9TNOLrxGXNF/+gmzdx UtLzaDrJiNWrw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Michael Ellerman , Rob Herring , Madhavan Srinivasan , Sasha Levin , jsavitz@redhat.com, aneesh.kumar@kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH AUTOSEL 5.4 3/3] powerpc/prom_init: Fixup missing powermac #size-cells Date: Wed, 4 Dec 2024 17:19:54 -0500 Message-ID: <20241204221956.2249103-3-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241204221956.2249103-1-sashal@kernel.org> References: <20241204221956.2249103-1-sashal@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.4.286 Content-Transfer-Encoding: 8bit From: Michael Ellerman [ Upstream commit cf89c9434af122f28a3552e6f9cc5158c33ce50a ] On some powermacs `escc` nodes are missing `#size-cells` properties, which is deprecated and now triggers a warning at boot since commit 045b14ca5c36 ("of: WARN on deprecated #address-cells/#size-cells handling"). For example: Missing '#size-cells' in /pci@f2000000/mac-io@c/escc@13000 WARNING: CPU: 0 PID: 0 at drivers/of/base.c:133 of_bus_n_size_cells+0x98/0x108 Hardware name: PowerMac3,1 7400 0xc0209 PowerMac ... Call Trace: of_bus_n_size_cells+0x98/0x108 (unreliable) of_bus_default_count_cells+0x40/0x60 __of_get_address+0xc8/0x21c __of_address_to_resource+0x5c/0x228 pmz_init_port+0x5c/0x2ec pmz_probe.isra.0+0x144/0x1e4 pmz_console_init+0x10/0x48 console_init+0xcc/0x138 start_kernel+0x5c4/0x694 As powermacs boot via prom_init it's possible to add the missing properties to the device tree during boot, avoiding the warning. Note that `escc-legacy` nodes are also missing `#size-cells` properties, but they are skipped by the macio driver, so leave them alone. Depends-on: 045b14ca5c36 ("of: WARN on deprecated #address-cells/#size-cells handling") Signed-off-by: Michael Ellerman Reviewed-by: Rob Herring Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20241126025710.591683-1-mpe@ellerman.id.au Signed-off-by: Sasha Levin --- arch/powerpc/kernel/prom_init.c | 29 +++++++++++++++++++++++++++-- 1 file changed, 27 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 7f4e2c031a9ab..b7ef63614417d 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -2856,7 +2856,7 @@ static void __init fixup_device_tree_chrp(void) #endif #if defined(CONFIG_PPC64) && defined(CONFIG_PPC_PMAC) -static void __init fixup_device_tree_pmac(void) +static void __init fixup_device_tree_pmac64(void) { phandle u3, i2c, mpic; u32 u3_rev; @@ -2896,7 +2896,31 @@ static void __init fixup_device_tree_pmac(void) &parent, sizeof(parent)); } #else -#define fixup_device_tree_pmac() +#define fixup_device_tree_pmac64() +#endif + +#ifdef CONFIG_PPC_PMAC +static void __init fixup_device_tree_pmac(void) +{ + __be32 val = 1; + char type[8]; + phandle node; + + // Some pmacs are missing #size-cells on escc nodes + for (node = 0; prom_next_node(&node); ) { + type[0] = '\0'; + prom_getprop(node, "device_type", type, sizeof(type)); + if (prom_strcmp(type, "escc")) + continue; + + if (prom_getproplen(node, "#size-cells") != PROM_ERROR) + continue; + + prom_setprop(node, NULL, "#size-cells", &val, sizeof(val)); + } +} +#else +static inline void fixup_device_tree_pmac(void) { } #endif #ifdef CONFIG_PPC_EFIKA @@ -3121,6 +3145,7 @@ static void __init fixup_device_tree(void) fixup_device_tree_maple_memory_controller(); fixup_device_tree_chrp(); fixup_device_tree_pmac(); + fixup_device_tree_pmac64(); fixup_device_tree_efika(); fixup_device_tree_pasemi(); } -- 2.43.0