From nobody Sat Jul 25 01:53:23 2026 Received: from mace.gateworks.com (mace.gateworks.com [174.136.5.171]) (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 AD5B5245012; Mon, 20 Jul 2026 22:26:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=174.136.5.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784586371; cv=none; b=if3ds2PbBxYmn+93th84fwUKqRgYRX/45esK0pN99HHP0CaPnHJSue31TEN0odW/MC3zE6MtYZ6fNk4kSbNsApSWZ5Pg5pH0U2t13tEZGDpVoFu+wlLE+rbWrrA3tj1XPuRvPPNz2raD6jw1qAkYOyCbzhGObLWrwCBDV58af74= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784586371; c=relaxed/simple; bh=71K3kCcEcqjJB0JCq2WkdhGBL2weky3aYnsgjyS9IoQ=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=CG8LKkbCotBd7sxpw9+Gc+dJTC3c2Pjbab39kLKyyNk1zw67brUvJneuBKfk4hiMW4ezLJhu3QTydZ7FdkVktjP+tcQHilmGm76LaIgN8Dk4xYocSsETbhra9GE3tIUlb6Z9hTXdukmTGx4SIRfuho6ItSjIHrTFoC+n6a2Yjnw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gateworks.com; spf=pass smtp.mailfrom=gateworks.com; dkim=pass (2048-bit key) header.d=gateworks.com header.i=@gateworks.com header.b=D35ZVvvp; arc=none smtp.client-ip=174.136.5.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gateworks.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gateworks.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gateworks.com header.i=@gateworks.com header.b="D35ZVvvp" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gateworks.com; s=gwtrack; h=Content-Transfer-Encoding:MIME-Version: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=5cZZlyNNFUTt9sv0d4LtjUQV3XEP7HQRI5TnM+ylYe8=; b=D35ZVvvp99eSB5jkirm4vCX9HQ 78WAm4MaQKWC2UA0klsiMSUY7s9spW7b7Vlyadgj5wR1A9UUC6q8JMR+w+Uxrb2NBXZ24UnsQUjRT 2dqxvjoOpyz+s3vx7b/vO4g6HnG7w96ScyfsZzRcy3/6l9+wasQXAVoWLr1Hgw1Nvxt7UT0riT0l/ 8dd90U6fqe1MlW7vSQjgEjatXpqn2zTRNx2DWxjd0BwrrwO8njbjt6uosjGyHVgUe3kOd3MHH/qTp xCr5I2a5QWKUyxvWliGu/+xtT6Ea6j7pOV7m1Ac2pIQh3qD2S0RaZlVFp3ljXgQM1SYcLWM6pFXf+ tj0i3FsA==; Received: from syn-068-189-091-139.biz.spectrum.com ([68.189.91.139] helo=chewbacca.pdc.gateworks.com) by mace.gateworks.com with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1wlvzE-00BXxU-Hx; Mon, 20 Jul 2026 21:57:22 +0000 Received: by chewbacca.pdc.gateworks.com (Postfix, from userid 1154) id 8F38B308352A; Mon, 20 Jul 2026 14:57:21 -0700 (PDT) From: Tim Harvey To: Bjorn Helgaas Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Tim Harvey , stable@vger.kernel.org Subject: [PATCH] PCI: Add ACS quirk for Pericom PI7C9X2G608 switches [12d8:2608] Date: Mon, 20 Jul 2026 14:57:18 -0700 Message-Id: <20260720215718.2139510-1-tharvey@gateworks.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The Pericom PI7C9X2G608 6-port Gen2 PCIe switch is also affected by the PI7C9X2G errata per the errata document: E2: ACS P2P Request Redirect Is Not Functional Apply the same quirk to this PCI ID as well to apply the workaround required if using ACS. Fixes: acd61ffb2f16 ("PCI: Add ACS quirk for Pericom PI7C9X2G switches") Cc: stable@vger.kernel.org Signed-off-by: Tim Harvey --- drivers/pci/quirks.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index b09f27f7846f..27f7d56c9ac3 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -6263,6 +6263,10 @@ DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0xb4= 04, pci_fixup_pericom_acs_store_forward); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0xb404, pci_fixup_pericom_acs_store_forward); +DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2608, + pci_fixup_pericom_acs_store_forward); +DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2608, + pci_fixup_pericom_acs_store_forward); =20 static void nvidia_ion_ahci_fixup(struct pci_dev *pdev) { --=20 2.34.1