From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 8B71F332628 for ; Sat, 28 Feb 2026 17:53:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772301228; cv=none; b=imPp3yc/XivOdhLgUHiB7dh4DDUjC/iMutPYpiZCD5/U+j8K/qBEItM0eb4QJdj3oL4/DdwENmcaJKfBnnxPlIQHaH6CLIU1upCXq+POOV3eyYOTd9ZyPj1GF7Gi6PU2uEAdf/gT/8Uiqc+OtWlxCxvXjJTZOKuDOiI3ciZ9Lqw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772301228; c=relaxed/simple; bh=zaLi0pMp0bWbvEXHJsbhu3SFVHOuKzj/+3rDcft9+5I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=synrXOs6yXEqqMmoOc56w/jnOL50vh862ORZ6bFZottu1Xoa4JGwP8vIIKzLwj/n/EO9oc06bVjpPiOHovRX/f5C7yXUe7GxYc+T2lC3Y0O+N46EmkB4d3rwY7P+XjLqojHBl4dDBem9kb4wqQP6Y4H2iRzB5g9++yQhk9+RXUk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mmTMy7Kw; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mmTMy7Kw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F114FC19425; Sat, 28 Feb 2026 17:53:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772301228; bh=zaLi0pMp0bWbvEXHJsbhu3SFVHOuKzj/+3rDcft9+5I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mmTMy7KwSIZKCmVzCjBwqmcQjH8pi0UU6SVKzaVcz4dIX3poSzgJ6Ud/hW6si5ozI 8nMrxzVQt6RdNgzOS2zVLVhcSSb3bt67BcXPdmBtrIblMYQ5eA4Ml7zhbAFaQWBDog P2grQVAeHgIaWCtwsmn+lB6Rm3sop6wqMwCX2URA5UMYy54aG+uXQm7FqGKQQcLAMX J3OVgMYakqgeUgA7gR+Z/9bAGX5zIfdxL43cOQXnQ9bUA1Xr9NCTHXlVHHbq+92YH2 TRG+jYnzAH/l98/E1/BYcxcvTujBJR5d9jrYCvnNlJYSTeZRqIFJJQ41qe0l4hjAql KYHXPvTCS9WqQ== From: Sasha Levin To: patches@lists.linux.dev Cc: =?UTF-8?q?Martin=20P=C3=A5lsson?= , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.18 406/752] net: usb: lan78xx: scan all MDIO addresses on LAN7801 Date: Sat, 28 Feb 2026 12:41:57 -0500 Message-ID: <20260228174750.1542406-406-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228174750.1542406-1-sashal@kernel.org> References: <20260228174750.1542406-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Martin Pålsson [ Upstream commit f1e2f0ce704e4a14e3f367d3b97d3dd2d8e183b7 ] The LAN7801 is designed exclusively for external PHYs (unlike the LAN7800/LAN7850 which have internal PHYs), but lan78xx_mdio_init() restricts PHY scanning to MDIO addresses 0-7 by setting phy_mask to ~(0xFF). This prevents discovery of external PHYs wired to addresses outside that range. One such case is the DP83TC814 100BASE-T1 PHY, which is typically configured at MDIO address 10 via PHYAD bootstrap pins and goes undetected with the current mask. Remove the restrictive phy_mask assignment for the LAN7801 so that the default mask of 0 applies, allowing all 32 MDIO addresses to be scanned during bus registration. Fixes: 02dc1f3d613d ("lan78xx: add LAN7801 MAC only support") Signed-off-by: Martin Pålsson Link: https://patch.msgid.link/0110019c6f388aff-98d99cf0-4425-4fff-b16b-dea5ad8fafe0-000000@eu-north-1.amazonses.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/usb/lan78xx.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 00397a8073934..065588c9cfa65 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -2094,8 +2094,6 @@ static int lan78xx_mdio_init(struct lan78xx_net *dev) dev->mdiobus->phy_mask = ~(1 << 1); break; case ID_REV_CHIP_ID_7801_: - /* scan thru PHYAD[2..0] */ - dev->mdiobus->phy_mask = ~(0xFF); break; } -- 2.51.0