From nobody Sun Feb 8 16:31:49 2026 Received: from mail-yw1-f201.google.com (mail-yw1-f201.google.com [209.85.128.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EBFB8DDB3 for ; Wed, 7 Feb 2024 01:18:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707268698; cv=none; b=GOuR19FLZbovcBcZY16wOaJvJzw4THwil1R3ShCebIDsVc9BIIo0OaOrZ1v2oyUQbCNwovC47Tyy9r3GkqGdTXUvmDjUsiqMhD5LCMcgUOvMUf1bZBJEfk74jXDQYV5UPLhXp1xlEX5fooFqyovsnm9tsPEXygOEgyY9VFQsYhA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707268698; c=relaxed/simple; bh=T62blaTiqzQLizGlfVWivOeIOmYziapjvmFfizRpV/g=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Cc:Content-Type; b=jht1oxlFbu18aHiCoWsWi/xnrYAt4Vq62ixapMCctTZLZjnM7A3P3R/miDsb9MbgV2p3GKW80rB5EfLy8HBhyEUFvzT31yL99AmMWpnio0kl6OI8p9JagimqarzU2pH+CtTZtzK/mdpFPT3HeLFUhougIuYq2kaTC8jhNzWUa64= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--saravanak.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=XlxjDbVI; arc=none smtp.client-ip=209.85.128.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--saravanak.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="XlxjDbVI" Received: by mail-yw1-f201.google.com with SMTP id 00721157ae682-6041dbb7a78so2167707b3.0 for ; Tue, 06 Feb 2024 17:18:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1707268696; x=1707873496; darn=vger.kernel.org; h=cc:to:from:subject:references:mime-version:message-id:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=pzwZNLSU6r/5TPCVrrLL62lmP2jEiRWNyfq6bcL8Mo0=; b=XlxjDbVIImD32kab5Kwo4YlVC7p8+E8aqJhRxHw3ADM7ebhWgRPO248dnC29vQAOaG 8fs2LK5ke80mt3oM3xQ7xaHCMTPvghS7nxPe7wS9M6vPWvfIP9wgqDxI04Pj2nxE2cV0 TWqzX4gBKVZ7cVirmgAZGQVCNDU/GdonLXs8DZ3z39gyU/9X/lo72EYCOvCoOsnRUUKi pH/LJfuVjZSoU6ounkkuxr2ptpwITbHFlTk2hlfc+Et5z0jLiJRvhIF9FHFqyME4N1Hk gPTHPItW5S3AMDYmuA0Q/mwPUwI8zJkX6tLZjWFQS3XUtMQzYhYiNhQaUQqF8W0pa0cl TBTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707268696; x=1707873496; h=cc:to:from:subject:references:mime-version:message-id:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=pzwZNLSU6r/5TPCVrrLL62lmP2jEiRWNyfq6bcL8Mo0=; b=lDNgWEpV+qwITySQ/wes1wv7Ncpisin73+4ReGvHi0XOKJ74Ml2EDjxzoUN7/TzY0o viBL6sKHJ6g4LHHqRjTJ2wuS19b22bD8WYk7SistcNy35EZlOQd1LM6QPYT9/9UKjDTS 5tuRAfwQuBwWhnKbR4lQ0NxdafJ8IxrqMEy15wv2sz2+Ss+irRVOOcN7anK98T0C9ArM KhK40kJHVgrQIRIZjY3uBwZJ9vnakRepTk9CYui2aHPMBD6ynA83eBbuzs8HZnK1q6o+ ON24jcv3aYV7nvTgIaYBZh4xt+1SuL2UeI5dgiPWCIahoRA4jSSTQJsu7CCsn1QJUZ2q fgSA== X-Gm-Message-State: AOJu0YypHRFFQTBGuOQwF0avdCZZAEVvjotahzMsmU7sG5m86gUta6yi rNUSmJxnYS7M1m7LEYbdYCU+qoWoug5Fup2/8rWygxOCbkJPLOgBdwWN31UpFndMfWyriQdwIiS W1itVVOxmaL3J/g== X-Google-Smtp-Source: AGHT+IG3z+4r/hvV7+1dLnMRbxeMCicoD6AFIsr/18VUeXwbdI/EtTCFNbIV8rOJfhHGjy6+ovOrP/JrgoY+n/Q= X-Received: from saravanak.san.corp.google.com ([2620:15c:2d:3:dc84:66b8:120:935a]) (user=saravanak job=sendgmr) by 2002:a81:9b82:0:b0:5fb:7e5b:b87f with SMTP id s124-20020a819b82000000b005fb7e5bb87fmr677991ywg.1.1707268695967; Tue, 06 Feb 2024 17:18:15 -0800 (PST) Date: Tue, 6 Feb 2024 17:18:01 -0800 In-Reply-To: <20240207011803.2637531-1-saravanak@google.com> Message-Id: <20240207011803.2637531-3-saravanak@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240207011803.2637531-1-saravanak@google.com> X-Mailer: git-send-email 2.43.0.594.gd9cf4e227d-goog Subject: [PATCH v2 2/3] of: property: Improve finding the supplier of a remote-endpoint property From: Saravana Kannan To: Rob Herring , Frank Rowand , Greg Kroah-Hartman , Saravana Kannan Cc: Xu Yang , kernel-team@android.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" After commit 4a032827daa8 ("of: property: Simplify of_link_to_phandle()"), remote-endpoint properties created a fwnode link from the consumer device to the supplier endpoint. This is a tiny bit inefficient (not buggy) when trying to create device links or detecting cycles. So, improve this the same way we improved finding the consumer of a remote-endpoint property. Fixes: 4a032827daa8 ("of: property: Simplify of_link_to_phandle()") Signed-off-by: Saravana Kannan --- drivers/of/property.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/of/property.c b/drivers/of/property.c index da70aaa62ca3..7bb2d8e290de 100644 --- a/drivers/of/property.c +++ b/drivers/of/property.c @@ -1232,7 +1232,6 @@ DEFINE_SIMPLE_PROP(pinctrl5, "pinctrl-5", NULL) DEFINE_SIMPLE_PROP(pinctrl6, "pinctrl-6", NULL) DEFINE_SIMPLE_PROP(pinctrl7, "pinctrl-7", NULL) DEFINE_SIMPLE_PROP(pinctrl8, "pinctrl-8", NULL) -DEFINE_SIMPLE_PROP(remote_endpoint, "remote-endpoint", NULL) DEFINE_SIMPLE_PROP(pwms, "pwms", "#pwm-cells") DEFINE_SIMPLE_PROP(resets, "resets", "#reset-cells") DEFINE_SIMPLE_PROP(leds, "leds", NULL) @@ -1298,6 +1297,17 @@ static struct device_node *parse_interrupts(struct d= evice_node *np, return of_irq_parse_one(np, index, &sup_args) ? NULL : sup_args.np; } =20 +static struct device_node *parse_remote_endpoint(struct device_node *np, + const char *prop_name, + int index) +{ + /* Return NULL for index > 0 to signify end of remote-endpoints. */ + if (!index || strcmp(prop_name, "remote-endpoint")) + return NULL; + + return of_graph_get_remote_port_parent(np); +} + static const struct supplier_bindings of_supplier_bindings[] =3D { { .parse_prop =3D parse_clocks, }, { .parse_prop =3D parse_interconnects, }, --=20 2.43.0.594.gd9cf4e227d-goog