From nobody Fri Oct 3 06:35:32 2025 Received: from mail-pl1-f202.google.com (mail-pl1-f202.google.com [209.85.214.202]) (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 AC2412798E8 for ; Thu, 4 Sep 2025 06:52:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756968728; cv=none; b=tL5a4b3pTIojOY0IA+fOjZKUuVK5xXf56UEP4x2boIyY+xL6XhjJ8w/3dUb0phHnah8sHkpDf6ZfyKaDq3HreweHXktKA55Dvu9QBacVvS6f4OUZbtJ2nT/I97yUNd62KTw95CLSEf92SrejXUMvh4nZWuC960ckhtIRT6KUJWM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756968728; c=relaxed/simple; bh=1+0suipFAqPVK2b39xso4IDF2mC8kFIado6DrgEAJ0w=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=BEmg1AhN/DEFYGWRVn+9oQ2oX1T6IUJYpfbTzp1ZvhMF0MnwWPV69eyv0heAIah2h8NC8M/Q3UJdGOtAbgvvOaEHJAu43YERkJ5JsZhfmpPfW+wEhrC30l1wirVVxAkhNRlwyUnsCwyXQBCoJFuvHnb+O0QNHF8fIDhumsQkoec= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--khtsai.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=tx8cSZc/; arc=none smtp.client-ip=209.85.214.202 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--khtsai.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="tx8cSZc/" Received: by mail-pl1-f202.google.com with SMTP id d9443c01a7336-24b2b347073so10324185ad.1 for ; Wed, 03 Sep 2025 23:52:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1756968726; x=1757573526; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=JHPzyeNqj1Mzv1xbWbzAD1fU2zO4WV3m0mAuAIf2PJM=; b=tx8cSZc/rZOouBuojaQn/enUOnbRburCNK/OYphIMP4uo925myK85HfL9QqLMwxy2c jDQr1UnFBSX+3BbyfkQRPaT1hiJTaKtOjXt7tbF6qHfd2TZ7z4EX+aolQQOWypHJQ67l +ww6EkPpmaZXjyDAs3Zd8FRsR/uiuVN0uokreT7kEASz3Hz2pjxL2vo6+g7MeylZUuTn nSaNrpq5QHXE1Jl7NNKAyRHrZRurIVVcTeUGU4dn11ht28gB6wgXnY6KVzHWqtRCP2M4 m5VjQQaaZ/CXuKq6gXMrGFpG+6OU/jc/0+kIsxIzcvQs8vukH2nwCr5a4ATmc7h4WWlQ /1Og== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756968726; x=1757573526; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=JHPzyeNqj1Mzv1xbWbzAD1fU2zO4WV3m0mAuAIf2PJM=; b=LCZQg6CEvPleHaqoMzmcB6kGJ/KiiWyd1znVZKQI7GRZr8kJoAhbcN+0VtfZNp0KX0 3RoNRaAsI0keYDINK6TWS23dd5AeV+bSwiapmEkrJWbqAe7fexkcssa1TkfhDRXZYuh+ FzYxdyrfdgMgnFW7u+7x8COYjPY3WzOibL0tTIJvcGlRh0eAblJcz8LdULwp2Rqz1dF6 3d1ObhDQYnZN6fEH0c9B4AhUXKe0AVulegJB3i3EFvPty0AxFZec3kALplZOMHWwrqZv EtofE4HBCw86qFND/AsYR8m4Gd6uBS4W6RhEFzb2gYAcg82lrRu0AMjxBAvo0x/2UAL9 3ptQ== X-Forwarded-Encrypted: i=1; AJvYcCW062vp4/xTSzKxWnbJ6lZJfDDrVWFuROTTYIMprEPn3FUcpc1Hy8HW9iG9XGBZLOFP3v5OSDSEK6+iiAM=@vger.kernel.org X-Gm-Message-State: AOJu0YxAoq8h+PceX5eG2iIKi0X5J8YaB+qWinCJYbP9s5LhdY4y7LKa X8yALXVNAvIjV/YirUad4fWP9LrSV0cHDTJdvfNKrWJblGBlRl9Xax6hip7hUEAhK/jAWR7WdUw RKOTc+Q== X-Google-Smtp-Source: AGHT+IGZvnH/NPgDPtqoHtlb8P8AkmPCwzvfM8VsiPQXxFU9ve/Or9NoleMaOm66Sy1x0f744LyDOKwku1s= X-Received: from pjbpx16.prod.google.com ([2002:a17:90b:2710:b0:32a:a943:aa8a]) (user=khtsai job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:c949:b0:246:6a8b:8473 with SMTP id d9443c01a7336-24944aed0f4mr207987455ad.45.1756968725972; Wed, 03 Sep 2025 23:52:05 -0700 (PDT) Date: Thu, 4 Sep 2025 14:52:00 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.51.0.338.gd7d06c2dae-goog Message-ID: <20250904065203.1162629-1-khtsai@google.com> Subject: [PATCH v2] usb: gadget: f_ecm: Fix ecm_opts->bound logic in bind path From: Kuen-Han Tsai To: gregkh@linuxfoundation.org, krzysztof.kozlowski@linaro.org, prashanth.k@oss.qualcomm.com, Thinh.Nguyen@synopsys.com, s.hauer@pengutronix.de Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Kuen-Han Tsai , stable@kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The bound flag in ecm_opts is being set to true even if gether_register_netdev() failed. Move the assignment of ecm_opts->bound to after the success check to ensure the flag only reflects the true state. The race condition on this flag is not a concern because the caller, configfs_composite_bind(), binds functions sequentially. Fixes: d65e6b6e884a ("usb: gadget: f_ecm: Always set current gadget in ecm_= bind()") Cc: stable@kernel.org Signed-off-by: Kuen-Han Tsai --- drivers/usb/gadget/function/f_ecm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/gadget/function/f_ecm.c b/drivers/usb/gadget/funct= ion/f_ecm.c index 027226325039..9f5ed6f32a62 100644 --- a/drivers/usb/gadget/function/f_ecm.c +++ b/drivers/usb/gadget/function/f_ecm.c @@ -690,13 +690,14 @@ ecm_bind(struct usb_configuration *c, struct usb_func= tion *f) =20 if (!ecm_opts->bound) { status =3D gether_register_netdev(ecm_opts->net); - ecm_opts->bound =3D true; } =20 mutex_unlock(&ecm_opts->lock); if (status) return status; =20 + ecm_opts->bound =3D true; + ecm_string_defs[1].s =3D ecm->ethaddr; =20 us =3D usb_gstrings_attach(cdev, ecm_strings, --=20 2.51.0.338.gd7d06c2dae-goog