From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from szelinsky.de (szelinsky.de [85.214.127.56]) (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 DE72D3803DD; Sun, 29 Mar 2026 16:10:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=85.214.127.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774800643; cv=none; b=dJ5ri08+w0v60Sab2KYz73z1y4TXHHFU3k8yQj3ZNJ21D5fkSz9TKUN4cC+rmBw+JIrZI9rnlENWXpQizUi6o/V3pH3jd1fuIQUCWGQLg3uLlfNcyj0nXTBnxqdA17Qt2m2sq7RwIjKGh4Oq2+m7mFjKkdo8KhqIZYauk3jDsW4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774800643; c=relaxed/simple; bh=q/bWozPvpjS3129sQ1aT6MCNM/+CB287UXZCclsrAiQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bvlRROCGS8MVr6Ay1pBtpANVhw1f9UMaU7A2Q5aMrqi130wxiC1u7eq5D+oN7MF9n1T0w11YVuTvk4EHaL7JBQpyV8xPM1SRsY+6uYxcAGieUMK7oa5K6DeH1ckg3A4ujbCEOBIPDT2GpWb86bdCL51tPAqKODOq2yqtzW8f0TE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=szelinsky.de; spf=pass smtp.mailfrom=szelinsky.de; dkim=temperror (0-bit key) header.d=szelinsky.de header.i=@szelinsky.de header.b=eYJ6ou5Y; arc=none smtp.client-ip=85.214.127.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=szelinsky.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=szelinsky.de Authentication-Results: smtp.subspace.kernel.org; dkim=temperror (0-bit key) header.d=szelinsky.de header.i=@szelinsky.de header.b="eYJ6ou5Y" Received: from localhost (localhost [127.0.0.1]) by szelinsky.de (Postfix) with ESMTP id 2038EE86F82; Sun, 29 Mar 2026 18:10:40 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=szelinsky.de; s=mail; t=1774800640; 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=OX2jiAI6SxjZvU8BVrCpRDDPGBmGKx9O4aTJ81TZaPs=; b=eYJ6ou5YxFaF7NJrr+D0dQg0jcWxxDsXle6FvgOsdoI+2Z2PjgPZMvPi3vTOwRyn7flogJ 7We6W8t4knYJ6WpGKbbV6Zw5lzpbHbkehk2rpWse27Iu4K+tLIvcOhr5onkONfjSmvJV4O eqNxnD3P+sXPIWhZ6R2/pnxSS84vzV/rbVgB9D2uIb+ax8JZO3YT2f47jLG8+m82NDxA/x NEEFishcyQ206By6qzxPLJriUi5PXl56dZ3PVNrwCmxhhKFWmjmQecHATnjbXAO3Bv5oBx gYiEPmw0dfiaPiFCHRDC6UyFux0sGyPXZow/3BcQN6cC2YFD3/xAwA8Mhh3MpQ== X-Virus-Scanned: Debian amavisd-new at szelinsky.de Received: from szelinsky.de ([127.0.0.1]) by localhost (szelinsky.de [127.0.0.1]) (amavisd-new, port 10025) with ESMTP id DJpmlPOCNOeE; Sun, 29 Mar 2026 18:10:40 +0200 (CEST) Received: from p14sgen5.fritz.box (dslb-002-205-089-102.002.205.pools.vodafone-ip.de [2.205.89.102]) by szelinsky.de (Postfix) with ESMTPSA; Sun, 29 Mar 2026 18:10:39 +0200 (CEST) From: Carlo Szelinsky To: Kory Maincent , Oleksij Rempel , Andrew Lunn Cc: Heiner Kallweit , Russell King , Jakub Kicinski , "David S . Miller" , Eric Dumazet , Paolo Abeni , Simon Horman , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Carlo Szelinsky Subject: [PATCH 1/3] net: mdio: treat PSE EPROBE_DEFER as non-fatal during PHY registration Date: Sun, 29 Mar 2026 18:10:12 +0200 Message-ID: <20260329161014.2908509-2-github@szelinsky.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260329161014.2908509-1-github@szelinsky.de> References: <20260329161014.2908509-1-github@szelinsky.de> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit When a PSE controller driver is built as a module, it may not be probed yet when PHYs are registered on the MDIO bus. This causes fwnode_find_pse_control() -> of_pse_control_get() to return -EPROBE_DEFER, which currently propagates up and destroys the PHY device. Treat -EPROBE_DEFER as non-fatal, allowing the PHY to register successfully with psec=NULL. The PSE control can be resolved lazily when first needed. Signed-off-by: Carlo Szelinsky --- drivers/net/mdio/fwnode_mdio.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/net/mdio/fwnode_mdio.c b/drivers/net/mdio/fwnode_mdio.c index ba7091518265..2a03b3fc41e6 100644 --- a/drivers/net/mdio/fwnode_mdio.c +++ b/drivers/net/mdio/fwnode_mdio.c @@ -161,8 +161,12 @@ int fwnode_mdiobus_register_phy(struct mii_bus *bus, psec = fwnode_find_pse_control(child, phy); if (IS_ERR(psec)) { - rc = PTR_ERR(psec); - goto unregister_phy; + if (PTR_ERR(psec) == -EPROBE_DEFER) { + psec = NULL; + } else { + rc = PTR_ERR(psec); + goto unregister_phy; + } } phy->psec = psec; -- 2.43.0