From patchwork Thu Sep 5 14:32:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathias Nyman X-Patchwork-Id: 826908 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 6E14654F87; Thu, 5 Sep 2024 14:31:33 +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=1725546694; cv=none; b=hYRV/dxHbGCmGb6BQjO0JjfBOSSpOpRSB19A55omNrfbI44vBQPnrr6W5s2kH3WxD6eCNrb9BkUkiIeaCQxLTU5F6lYBG7GmWQ+WL2MV2Ti/e14Hdgcz0nNG7FT6a9JZXBCjCIIt70kvdnLe9k6aggGydwe/Uo+8MYLQzr55wPE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725546694; c=relaxed/simple; bh=uGI6SGIrD/O2eBQ4Wq4v9jYmgtUXRGyG4r1dvAlrzFM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=L+4XtslcFXMvWPxXHQNIVqSx06rw97XCOYPKwC/HNI2icVWhiwBg+mUrghdoxXE0bKLdnScYnWKIhm8e7d/oUZ94iYz15tDE6A5CrzQJJsAhdOYBCPK+Xnrz9xWXBM/Qn2W9snvfkGT45nLRho2x8uJ/kqC0OTylGS5TRgoFePQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Yj5sV8Rf; 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=none 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="Yj5sV8Rf" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1725546693; x=1757082693; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=uGI6SGIrD/O2eBQ4Wq4v9jYmgtUXRGyG4r1dvAlrzFM=; b=Yj5sV8RfKMOiwbBbhSyTCMTv980JjQ1ODr5/sKKkZ9JU34FlZHiSV91W U0ttmxbXv73FrVZvekoPKfCtxFI+V2TDICTA0bFbV0zQjN4cmhLP/U2Al YM/jeR6kUHXyU0hgFVhJ/yzHOGGHG2crbgRV3/FFJpuAGhzw2zWo1TrLY ghfo5zy+9WKkzKexLyFNq1ySxvZi58YhFasIsltg/6ENHvnQ25fiUmyIG GGcPTsT/FH5MUna3I3PSFcUPecqOeekDC0H91sIX+i39+Si1BMlKCyudK lPPfjkiqJT7umueLDw4DcMQqxeWQOwm79+CzT4y19byAICqmq+8rkFr7p A==; X-CSE-ConnectionGUID: qqrLFIq6RnueAyUiz5M15Q== X-CSE-MsgGUID: Yf882uCmTACDAD6RGlMCBA== X-IronPort-AV: E=McAfee;i="6700,10204,11186"; a="49677561" X-IronPort-AV: E=Sophos;i="6.10,205,1719903600"; d="scan'208";a="49677561" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Sep 2024 07:31:33 -0700 X-CSE-ConnectionGUID: qgWnCSLvROWaQC2raElYlw== X-CSE-MsgGUID: Ism/uomFQDWtq9U3m0egiw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,205,1719903600"; d="scan'208";a="88883235" Received: from mattu-haswell.fi.intel.com ([10.237.72.199]) by fmviesa002.fm.intel.com with ESMTP; 05 Sep 2024 07:31:31 -0700 From: Mathias Nyman To: Cc: , Mathias Nyman , stable@vger.kernel.org Subject: [PATCH 11/12] xhci: Set quirky xHC PCI hosts to D3 _after_ stopping and freeing them. Date: Thu, 5 Sep 2024 17:32:59 +0300 Message-Id: <20240905143300.1959279-12-mathias.nyman@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240905143300.1959279-1-mathias.nyman@linux.intel.com> References: <20240905143300.1959279-1-mathias.nyman@linux.intel.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 PCI xHC host should be stopped and xhci driver memory freed before putting host to PCI D3 state during PCI remove callback. Hosts with XHCI_SPURIOUS_WAKEUP quirk did this the wrong way around and set the host to D3 before calling usb_hcd_pci_remove(dev), which will access the host to stop it, and then free xhci. Fixes: f1f6d9a8b540 ("xhci: don't dereference a xhci member after removing xhci") Cc: stable@vger.kernel.org Signed-off-by: Mathias Nyman --- drivers/usb/host/xhci-pci.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 526739af2070..de50f5ba60df 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -657,8 +657,10 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) void xhci_pci_remove(struct pci_dev *dev) { struct xhci_hcd *xhci; + bool set_power_d3; xhci = hcd_to_xhci(pci_get_drvdata(dev)); + set_power_d3 = xhci->quirks & XHCI_SPURIOUS_WAKEUP; xhci->xhc_state |= XHCI_STATE_REMOVING; @@ -671,11 +673,11 @@ void xhci_pci_remove(struct pci_dev *dev) xhci->shared_hcd = NULL; } + usb_hcd_pci_remove(dev); + /* Workaround for spurious wakeups at shutdown with HSW */ - if (xhci->quirks & XHCI_SPURIOUS_WAKEUP) + if (set_power_d3) pci_set_power_state(dev, PCI_D3hot); - - usb_hcd_pci_remove(dev); } EXPORT_SYMBOL_NS_GPL(xhci_pci_remove, xhci);