From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpout-03.galae.net (smtpout-03.galae.net [185.246.85.4]) (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 6B8604D7D56; Wed, 16 Sep 2026 17:44:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.246.85.4 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789580700; cv=none; b=otCrA9+m3rcZtJNMfU9n/OYp3JixlwEzSvKr/uJB2YAA5fiIxWV9oljJp4h751KtwwZJu278xLbt8cC1o2qsM5JmGolX3V9wq3K1/Css61xrVI2U2RDPj6Gz4X2BubJ+ncUOmbDj/h6k0TBHEQxs9iyQ8R30EZ69iWHeGlGeWdI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789580700; c=relaxed/simple; bh=vVgvE+DVRi10/wjC5BXvLaAYZOW2gQVgtP/dxaimUs8=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=YiFxOJjtf7Ke2Io2yUvHDYZ+jVU8IORzYuHOTugzcXQg6IanxZDv/M2gyPLCszZRpEi3x3UA2nvG+I6tVJ6PBWIR/BINyQhmvDPtZGS+anQFl6a7nTpSLZrXrAAkc//K7Z0IGDXI69DurfJrD2V8dyH1hblsfxeWC9JGFzdd5z8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=j3DRG/GW; arc=none smtp.client-ip=185.246.85.4 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="j3DRG/GW" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-03.galae.net (Postfix) with ESMTPS id B2B574E40762; Wed, 16 Sep 2026 17:44:48 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 7A56260337; Wed, 16 Sep 2026 17:44:48 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 78E4211C7B00D; Wed, 16 Sep 2026 19:44:45 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1789580687; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=zOkNP+060kWI8evPyG7XxKhlF+a9qe7vg/5I3PYHEvM=; b=j3DRG/GWTMPDRpKHz/mq4qYTx10eN3k3TsNMPo4cT4NpLZTlXFXVAybtKtKSos+oBtKLTB TN+7dhPC2raqihaHzMiLCbXDOhjVPOz3zqZeY9aoXRbCtxUsddUJCE83mtWI+++1yACvSz xxwFwwws7DPyU/y7+Y4LYgQpZqdSvCRMLoM6EpV3kq3H4hEwoimu4f3xvskmtcuCQWR2en s1t8ANmndtdUsiLn7rNJndVnZDAmHzYZCxsUq9hQzV/5CsGYTx8DOqCtT8cgSpm2jFh+BS W65k+7mSfdjPn1uTtCI2togN8I4dgqgrRhrym9QDOsF65yZXnEI+LambFUEgHQ== Date: Wed, 16 Sep 2026 19:44:44 +0200 From: Herve Codina To: Ernest Van Hoecke Cc: Rob Herring , Saravana Kannan , "Miquel Raynal (Schneider Electric)" , Frank Li , Kieran Bingham , Pengutronix Kernel Team , Stephen Boyd , Brian Masney , Linus Walleij , Bartosz Golaszewski , Uwe =?UTF-8?B?S2xlaW5lLUvDtm5pZw==?= , Greg Kroah-Hartman , Geert Uytterhoeven , Leonardo Costa , devicetree@vger.kernel.org, linux-clk@vger.kernel.org, linux-gpio@vger.kernel.org, linux-pwm@vger.kernel.org, linux-kernel@vger.kernel.org, Ernest Van Hoecke Subject: Re: [PATCH v2 2/7] of: property: fw_devlink: Report unsupported supplier linking Message-ID: <20260916194444.7d677516@bootlin.com> In-Reply-To: <20260910-fw-devlink-nexus-ready-v2-2-17ac82dbe226@toradex.com> References: <20260910-fw-devlink-nexus-ready-v2-0-17ac82dbe226@toradex.com> <20260910-fw-devlink-nexus-ready-v2-2-17ac82dbe226@toradex.com> Organization: Bootlin X-Mailer: Claws Mail 4.4.0 (GTK 3.24.52; x86_64-redhat-linux-gnu) Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Last-TLS-Session-Version: TLSv1.3 Hi Ernest, On Thu, 10 Sep 2026 16:16:43 +0200 Ernest Van Hoecke wrote: > From: Ernest Van Hoecke > > OF supplier linking is deliberately disabled on OLPC and Intel CE4100 > systems. The add_links operation currently returns zero on these systems, > so callers cannot distinguish unsupported linking from success. > > Return -EOPNOTSUPP when supplier linking is unsupported. This allows OF > unit tests to skip link assertions on these systems without exposing the > private platform-support predicate. > > The driver core ignores the add_links return value and marks the fwnode > as processed regardless, so its link creation and retry behavior remain > unchanged. > > Signed-off-by: Ernest Van Hoecke > --- > drivers/of/property.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > Reviewed-by: Herve Codina Best regards, Hervé