From patchwork Wed Aug 25 10:51:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kishon Vijay Abraham I X-Patchwork-Id: 12457243 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DFCF1C4338F for ; Wed, 25 Aug 2021 10:51:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C864961181 for ; Wed, 25 Aug 2021 10:51:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240018AbhHYKwm (ORCPT ); Wed, 25 Aug 2021 06:52:42 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:35388 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240023AbhHYKwi (ORCPT ); Wed, 25 Aug 2021 06:52:38 -0400 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 17PApm3q086839; Wed, 25 Aug 2021 05:51:48 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1629888708; bh=GaS42XPzy+IzWgDptEm7iQbdbNddfetdjBkNUeG0FgQ=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=jX0VIQNBQ7cvWmNB/3lxltuFoJ1VJ3cEEK4CXO4prHwLPhFmkevkh6wdQ13YASseY VNHW1k6LIScoAwz9MPAI+5cDZMlvYBMYdqHEwbTqYrM/otXqWPv81FW0K2SaJn3Gzr TF0LMgPGKv78qiqOZNXYUYYDrb7hxzzBka2o2aII= Received: from DLEE100.ent.ti.com (dlee100.ent.ti.com [157.170.170.30]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 17PApmef010231 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 25 Aug 2021 05:51:48 -0500 Received: from DLEE109.ent.ti.com (157.170.170.41) by DLEE100.ent.ti.com (157.170.170.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Wed, 25 Aug 2021 05:51:48 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DLEE109.ent.ti.com (157.170.170.41) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2 via Frontend Transport; Wed, 25 Aug 2021 05:51:48 -0500 Received: from a0393678-lt.ent.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 17PApW88129194; Wed, 25 Aug 2021 05:51:45 -0500 From: Kishon Vijay Abraham I To: Greg Kroah-Hartman , Mathias Nyman , Alan Stern CC: , , , Kishon Vijay Abraham I , Subject: [PATCH 3/3] xhci: Set HCD flag to defer primary roothub registration Date: Wed, 25 Aug 2021 16:21:32 +0530 Message-ID: <20210825105132.10420-4-kishon@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210825105132.10420-1-kishon@ti.com> References: <20210825105132.10420-1-kishon@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Set "HCD_FLAG_DEFER_PRI_RH_REGISTER" to hcd->flags in xhci_run() to defer registering primary roothub in usb_add_hcd(). This will make sure both primary roothub and secondary roothub will be registered along with the second HCD. This is required for cold plugged USB devices to be detected in certain PCIe USB cards (like Inateck USB card connected to AM64 EVM or J7200 EVM). Signed-off-by: Kishon Vijay Abraham I Suggested-by: Mathias Nyman --- drivers/usb/host/xhci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 3618070eba78..9b7d968022c8 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -644,7 +644,6 @@ int xhci_run(struct usb_hcd *hcd) /* Start the xHCI host controller running only after the USB 2.0 roothub * is setup. */ - hcd->uses_new_polling = 1; if (!usb_hcd_is_primary_hcd(hcd)) return xhci_run_finished(xhci); @@ -692,6 +691,7 @@ int xhci_run(struct usb_hcd *hcd) if (ret) xhci_free_command(xhci, command); } + set_bit(HCD_FLAG_DEFER_PRI_RH_REGISTER, &hcd->flags); xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Finished xhci_run for USB2 roothub");