From nobody Thu Sep 4 03:14:11 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03B72C6FA82 for ; Tue, 13 Sep 2022 15:25:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236207AbiIMPZW (ORCPT ); Tue, 13 Sep 2022 11:25:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45454 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233238AbiIMPXL (ORCPT ); Tue, 13 Sep 2022 11:23:11 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F31B76B155; Tue, 13 Sep 2022 07:37:13 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CD594614DF; Tue, 13 Sep 2022 14:30:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D5178C433B5; Tue, 13 Sep 2022 14:30:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1663079404; bh=ULT3UulllkD6PnR0q3ChBNmifBLJcxOxva0bCFFsHCI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Nt6KT6mAYlrt4vYWy3FEQd0jt7RjULMxlca5tf+BRdgWrjELrkHWXpzoLx91idrbh O8TQqGmY4WKxC0euhRmwUZUP/6e75Kk/TW6LvIRAjIf+C3JUudwwFWButhjRjiEp86 budejYEiY4ZWEYnuoRpN1XQw1JKn5HqOYAR8PP1w= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mathias Nyman , Sasha Levin Subject: [PATCH 4.19 13/79] Revert "xhci: turn off port power in shutdown" Date: Tue, 13 Sep 2022 16:06:31 +0200 Message-Id: <20220913140349.496982808@linuxfoundation.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220913140348.835121645@linuxfoundation.org> References: <20220913140348.835121645@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Mathias Nyman [ Upstream commit 8531aa1659f7278d4f2ec7408cc000eaa8d85217 ] This reverts commit 83810f84ecf11dfc5a9414a8b762c3501b328185. Turning off port power in shutdown did cause issues such as a laptop not proprly powering off, and some specific usb devies failing to enumerate the subsequent boot after a warm reset. So revert this. Fixes: 83810f84ecf1 ("xhci: turn off port power in shutdown") Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20220825150840.132216-4-mathias.nyman@linux= .intel.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/host/xhci-hub.c | 2 +- drivers/usb/host/xhci.c | 15 ++------------- drivers/usb/host/xhci.h | 2 -- 3 files changed, 3 insertions(+), 16 deletions(-) diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index e40370ed7d8a5..1bb48e53449e6 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -565,7 +565,7 @@ struct xhci_hub *xhci_get_rhub(struct usb_hcd *hcd) * It will release and re-aquire the lock while calling ACPI * method. */ -void xhci_set_port_power(struct xhci_hcd *xhci, struct usb_hcd *hcd, +static void xhci_set_port_power(struct xhci_hcd *xhci, struct usb_hcd *hcd, u16 index, bool on, unsigned long *flags) { struct xhci_hub *rhub; diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 677587479d260..a9e72fee87a77 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -774,8 +774,6 @@ static void xhci_stop(struct usb_hcd *hcd) void xhci_shutdown(struct usb_hcd *hcd) { struct xhci_hcd *xhci =3D hcd_to_xhci(hcd); - unsigned long flags; - int i; =20 if (xhci->quirks & XHCI_SPURIOUS_REBOOT) usb_disable_xhci_ports(to_pci_dev(hcd->self.sysdev)); @@ -791,21 +789,12 @@ void xhci_shutdown(struct usb_hcd *hcd) del_timer_sync(&xhci->shared_hcd->rh_timer); } =20 - spin_lock_irqsave(&xhci->lock, flags); + spin_lock_irq(&xhci->lock); xhci_halt(xhci); - - /* Power off USB2 ports*/ - for (i =3D 0; i < xhci->usb2_rhub.num_ports; i++) - xhci_set_port_power(xhci, xhci->main_hcd, i, false, &flags); - - /* Power off USB3 ports*/ - for (i =3D 0; i < xhci->usb3_rhub.num_ports; i++) - xhci_set_port_power(xhci, xhci->shared_hcd, i, false, &flags); - /* Workaround for spurious wakeups at shutdown with HSW */ if (xhci->quirks & XHCI_SPURIOUS_WAKEUP) xhci_reset(xhci, XHCI_RESET_SHORT_USEC); - spin_unlock_irqrestore(&xhci->lock, flags); + spin_unlock_irq(&xhci->lock); =20 xhci_cleanup_msix(xhci); =20 diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 3b29dfc6f79e3..3e6cb257fde5a 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -2145,8 +2145,6 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq= , u16 wValue, u16 wIndex, int xhci_hub_status_data(struct usb_hcd *hcd, char *buf); int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1); struct xhci_hub *xhci_get_rhub(struct usb_hcd *hcd); -void xhci_set_port_power(struct xhci_hcd *xhci, struct usb_hcd *hcd, u16 i= ndex, - bool on, unsigned long *flags); =20 void xhci_hc_died(struct xhci_hcd *xhci); =20 --=20 2.35.1