From nobody Wed Dec 17 14:09:08 2025 Received: from mail-pl1-f178.google.com (mail-pl1-f178.google.com [209.85.214.178]) (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 E32822D73BE for ; Mon, 13 Oct 2025 18:17:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.178 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760379451; cv=none; b=PEHv9iBpBagkbXifX7l107A9kVrkCM3lG616EcH9FXhhc593VyjeHOEailv2Z7f+10xzAYKLVOVuTk3mwOxVX+Qy2oOzyugvZEmj2qvU72REqUuwoESswDUvRMuOBTxGhdIKMi/aNuKK/pjoOQXDE3UfmmnVhocvAHLbqZh84oc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760379451; c=relaxed/simple; bh=lTRDsCs/D5gFRcFqRPKy43626K0S1gYzb3FNCfR30zs=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Dzmi0PDe83Dz61DpbF2H0VrvLnZmJulh/dkAvd9aYJq5zG33rTXQAo3THqIsv/kY7+bqZKdB6EdRSMeT0LaMFzmdgv8RFg+ViEUUiSsORjBHhrCQACY1QfPLsBnY2wBdde9A4dTSnpPdv63zs2PL75T8acFsxmPFa0jj6sCR0gI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=L6+FqQVN; arc=none smtp.client-ip=209.85.214.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="L6+FqQVN" Received: by mail-pl1-f178.google.com with SMTP id d9443c01a7336-27eec33b737so67937215ad.1 for ; Mon, 13 Oct 2025 11:17:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1760379449; x=1760984249; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=DINigu/lDIdPD/xwaJPV5YAdp8XbvaeBDX23woL7nKQ=; b=L6+FqQVNS0oFT9ozdBBWP7pdTaj4G3KCHy18nimmIHLGNnxTmdeVG22/16kkjGCIu8 K+TGQgR+rrAY9MhTjFXTFjgzIPipWHMEeKMqCicF+RgbrP6gSRygqknUyj4XbIgtjBKD QlxjlLCQQxrqfjnjF8GJ3tYYg7NrLzQw55Vft1qQkb/Ez095yVQVGu56x1WSdWlbwsLF 3WMfb6niwP18M4t3ZMNEY4ntCHEeELqiX7Z7oTzhgOsMCbiuIDxXYzJzJOrScK9Bijsv TJjKjaa952davfP+32aqougTHZBT6IlZf1gQWA9qizI9fPwU+JtVvuUKyumbryw6FKhl IsJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760379449; x=1760984249; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=DINigu/lDIdPD/xwaJPV5YAdp8XbvaeBDX23woL7nKQ=; b=ZhFwVVsDR4+9IPwbSe1e6hGV7WPL3R1tUV1bhSFwS+fMLQwsMAVFWtEEmuKkv+IFNp Kr7JQvIp0zb+5qqmfTeHpFhqH9FUjQr4L6bJl4LRJf0PBcc2bKYtvCEO3/VwaCchJZ20 BLHLDk3wCLXIRKP8b9dOSxoo+2N57KPZnvvTv4abmKoO9F2qzGaMUFKxnayEE7ccLLba xZNHxpBTgvnIpwD/yRyQMbAiqkIF/IzifeALwG/OtBY+4C12FplnIC4zttktePV3Os6+ 01fIfdAoljZ+sLrAnD9zInaco1eTzi4anr1/vLb2VZccr0cZULLY5QbGVWXOfxhTmq0E dasg== X-Forwarded-Encrypted: i=1; AJvYcCXuDOa30frCijJyWQ5P+qJ0NAHMi7LPUX4gRu+HoWwr9yfj/nasnx9lb6EfcsmSPM6eiuj0Vq6YZ9DCGC8=@vger.kernel.org X-Gm-Message-State: AOJu0Ywrk567wkY2uECrGDBh9yurN4j1mxTgd0fD0BXoGIa7RD/Cg8tv kAEmG/udXSwuED1D178Kc7R/kPpHiB1nANUqd4jU5OLbBuT6pxHThl3G X-Gm-Gg: ASbGncuAXjUXKlxfw/B3PLn3cCcAG8ISQTby4bb8cPqJ/MLTlJGklQqIShSlu0FDlXr ly8lmMXcYgJM60mPYqTG+NxJBZj0zv9I9F9O3GMxFx2GFtslHFJTGqNV8z2TGvLQYSN1EzjVpon jDFsk+VkxzgNnDLI2vPXcD+HgipsPeDafaMpe1ccSj3atVPpDTE54LQ9NH6WwIKXSEmLxdpwCmE Nue0s6X/HCLpE5N2w4Mr2Pkz7HU+hansBzdPUfcVJHN2Ah1PTPT0VBb+1BMBph0iAvmdhxO80iL QEhW87SlzF/x+rYUVXmOeZnqqvvbFQdTC6B2Ed+3DpFkqVlf0C9twvS8W8CnT3eHar9CgZYyWDA dHO0guNRgnoF5uKlBGDL7CTzD7afE6HtLwsjtpaKqWgOaigJrYY+XmUCw/oMJMdGV4T6kzdjWVm DnPARvZgAtjL+mcNJhQDWHG/DZFtfUdE68 X-Google-Smtp-Source: AGHT+IG7x5vmQvO6Mjl28H+yolG/h8BvghF5Ba98451r81jzZMgiuy0qWbUXeKg4Zw+kpWpfF0h6HQ== X-Received: by 2002:a17:903:2343:b0:25c:b543:2da7 with SMTP id d9443c01a7336-290272159e7mr227818555ad.9.1760379448997; Mon, 13 Oct 2025 11:17:28 -0700 (PDT) Received: from debian.domain.name ([223.185.134.230]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-29034f93b71sm140182275ad.114.2025.10.13.11.17.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Oct 2025 11:17:28 -0700 (PDT) From: I Viswanath To: Thangaraj.S@microchip.com, Rengarajan.S@microchip.com, UNGLinuxDriver@microchip.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: netdev@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, skhan@linuxfoundation.org, linux-kernel-mentees@lists.linux.dev, david.hunter.linux@gmail.com, khalid@kernel.org, I Viswanath Subject: [PATCH net v2] net: usb: lan78xx: fix use of improperly initialized dev->chipid in lan78xx_reset Date: Mon, 13 Oct 2025 23:46:48 +0530 Message-ID: <20251013181648.35153-1-viswanathiyyappan@gmail.com> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" dev->chipid is used in lan78xx_init_mac_address before it's initialized: lan78xx_reset() { lan78xx_init_mac_address() lan78xx_read_eeprom() lan78xx_read_raw_eeprom() <- dev->chipid is used here dev->chipid =3D ... <- dev->chipid is initialized correctly here } Reorder initialization so that dev->chipid is set before calling lan78xx_init_mac_address(). Fixes: a0db7d10b76e ("lan78xx: Add to handle mux control per chip id") Signed-off-by: I Viswanath Reviewed-by: Khalid Aziz Reviewed-by: Vadim Fedorenko --- v1: Link: https://lore.kernel.org/netdev/20251001131409.155650-1-viswanathiyyap= pan@gmail.com/ v2: - Add Fixes tag drivers/net/usb/lan78xx.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 42d35cc6b421..b4b086f86ed8 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -3247,10 +3247,6 @@ static int lan78xx_reset(struct lan78xx_net *dev) } } while (buf & HW_CFG_LRST_); =20 - ret =3D lan78xx_init_mac_address(dev); - if (ret < 0) - return ret; - /* save DEVID for later usage */ ret =3D lan78xx_read_reg(dev, ID_REV, &buf); if (ret < 0) @@ -3259,6 +3255,10 @@ static int lan78xx_reset(struct lan78xx_net *dev) dev->chipid =3D (buf & ID_REV_CHIP_ID_MASK_) >> 16; dev->chiprev =3D buf & ID_REV_CHIP_REV_MASK_; =20 + ret =3D lan78xx_init_mac_address(dev); + if (ret < 0) + return ret; + /* Respond to the IN token with a NAK */ ret =3D lan78xx_read_reg(dev, USB_CFG0, &buf); if (ret < 0) --=20 2.47.3