From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) (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 AB3A03A6F0E for ; Tue, 12 May 2026 12:30:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.7 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778589020; cv=none; b=cDlwRMWIRu9xO941vWiMWVUiSI+yhTMmAB83YFKM2B58I7q/T7/YFFPzubm8sUF0ytc3PoKY7RyuXcBysXL5jbOsjeYyR/dATSA0zlX50L7V75ytcKQFrgK0edsRNVNyUQGDGl6OOMWMZYX2l9KqCvrt/XQk+2gP/Np06aoPfVQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778589020; c=relaxed/simple; bh=IQu0oafLJ8QcGX0PmX4WIScGtiOL5MtWUlnj/rq6BA8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rYgej+cE8y+YOnoK3ZK3H63p/EAx0yx08TnI6/d5Y+PDK3OH0yhBrpdqWJ2OGv5VXH2HRszK4lVDUFEunUTX5+OtcRoPxN3VicnFTRgjZ8sSztmVzBYFTHe7cgFWyD8C00MUAK9A+nzvMjFJqmtS6Phr6dXao83km6g6NvUklkk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=ZSUEVw9T; arc=none smtp.client-ip=192.198.163.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="ZSUEVw9T" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1778589013; x=1810125013; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=IQu0oafLJ8QcGX0PmX4WIScGtiOL5MtWUlnj/rq6BA8=; b=ZSUEVw9TJhUyP8mFQLOycV9AJ1pZzPNESUMLIGNtQ4Rcs/e6rQHjvruD XdOKT/UfMm+5AvdQCCD49nxKce6CiHG2xCGLSw+Fh57rMDbxDUbjP0Ulk 0P4OiyPJXm/BODdRngX0goYhADmg1Cxv4VLq05HBnwX55rkmA+QgNED5Q OK/Ozyenf3eVNO5tfHLAlughML2TOo+bpWzYXpZNGeZ3+kg6J1iB7j5wj LQzlJYU7tSa60EOQahYjmcc20LWfG9Agc092ymdYywqOZOQEkPqaeCxHq m1EEs7iccu6ynA3b7RpEuNQPcskbTjBhFK99JUCnOS8afNoShH5T8omgm A==; X-CSE-ConnectionGUID: 4kHYRY6TTcWw3SlMxCbD9g== X-CSE-MsgGUID: fH91vWx0QE2YQufYgEXAxQ== X-IronPort-AV: E=McAfee;i="6800,10657,11783"; a="104950597" X-IronPort-AV: E=Sophos;i="6.23,230,1770624000"; d="scan'208";a="104950597" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 May 2026 05:29:59 -0700 X-CSE-ConnectionGUID: w76JriZeTnOQfLugoIKYMA== X-CSE-MsgGUID: R2Wa1l1tQf+GFTOAP0rfnQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,230,1770624000"; d="scan'208";a="234692671" Received: from black.igk.intel.com ([10.91.253.5]) by fmviesa007.fm.intel.com with ESMTP; 12 May 2026 05:29:56 -0700 Received: by black.igk.intel.com (Postfix, from userid 1001) id BAB389B; Tue, 12 May 2026 14:29:55 +0200 (CEST) From: Mika Westerberg To: linux-usb@vger.kernel.org Cc: Yehezkel Bernat , Lukas Wunner , Andreas Noever , Alan Borzeszkowski , Pooja Katiyar , Rene Sapiens , Gil Fine , Mika Westerberg Subject: [PATCH 2/8] thunderbolt: Don't access path config space on Lane 1 adapters in tb_switch_reset_host() Date: Tue, 12 May 2026 14:29:49 +0200 Message-ID: <20260512122955.271688-3-mika.westerberg@linux.intel.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260512122955.271688-1-mika.westerberg@linux.intel.com> References: <20260512122955.271688-1-mika.westerberg@linux.intel.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Pooja Katiyar USB4 Lane 1 adapters do not have accessible path config space. Skip the path config space cleanup in tb_switch_reset_host() for these ports. The check is for USB4 switches only. Thunderbolt 1-3 Lane 1 adapters stay as is because we do need to program their path config space. Co-developed-by: Rene Sapiens Signed-off-by: Rene Sapiens Signed-off-by: Pooja Katiyar Signed-off-by: Mika Westerberg --- drivers/thunderbolt/switch.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index bfcab98faf4b..ad0ec8f8ee28 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -1620,6 +1620,12 @@ static int tb_switch_reset_host(struct tb_switch *sw) ret = tb_port_reset(port); if (ret) return ret; + /* + * USB4 Lane 1 adapters do not have accessible + * path config space. + */ + if (tb_switch_is_usb4(sw) && !port->usb4) + continue; } else if (tb_port_is_usb3_down(port) || tb_port_is_usb3_up(port)) { tb_usb3_port_enable(port, false); -- 2.50.1