From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 94C1B351C35; Fri, 4 Sep 2026 05:29:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788499749; cv=none; b=MiAqk5QIc0aTTJB3UXH95RkISK963BVLlXVwayudOZm/RLX0P2hBxV8v1g4oJBhaT7ug9L9p9j7Q06c/iDWYsQYkPAuib9uve45UHczQOJTajMTVhrnr4mcYLdsHLVUURgSykvcOj8YB7xzidiRKi7NMQAH6iJO9Fzo6efmtM5M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788499749; c=relaxed/simple; bh=dZgW2E/lNiyMkePumf0rX8S97vOYteYOBn8go55l7kk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Ovk1/aTsSr1LDFto30g2LMdlQGdlSzMkrtCGuJx+6/agrvNiUrSeL9hUVqQMo7FOaVA3U271CysJ/z0giKwMXZJiDYuNLBXjx8BvsOFMuriyIvLxsxi6d+Pr7blmIC3AaKUYn8wiipY0eD6a5Ishx4GATu0OTeFPb9xC11g8rZU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=z4J7H6r9; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="z4J7H6r9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F0CE71F00A3D; Fri, 4 Sep 2026 05:29:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788499748; bh=L88YJaCfnC8I5kaZAAqauQ8TuGJ/0uUT9GdaaD0Oz30=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=z4J7H6r9IAFeSFT7z1eJNyLh8KMpW+3t071/lSlF422Nd3grYvF+k3HJE1cbRAAqF QdrF/Fmf+vbRf4BaRDwvTmWzrQDkjBkXzX2Zfts3g6AXXVlzuLRC3F6ANk4UK4m41Z ciGeKIeIY6H93r9qafKxiivEuR0ncrkhyvJ2LShw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tim Harvey , Bjorn Helgaas Subject: [PATCH 7.2 526/713] PCI: Add ACS quirk for Pericom PI7C9X2G608 switches [12d8:2608] Date: Fri, 4 Sep 2026 06:58:14 +0200 Message-ID: <20260904045815.610450304@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260904045803.810145556@linuxfoundation.org> References: <20260904045803.810145556@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tim Harvey commit 062fb7f816439da6bf3860386889343482a66bd4 upstream. 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") Signed-off-by: Tim Harvey Signed-off-by: Bjorn Helgaas Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260720215718.2139510-1-tharvey@gateworks.com Signed-off-by: Greg Kroah-Hartman --- drivers/pci/quirks.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -6263,6 +6263,10 @@ DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_P 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); static void nvidia_ion_ahci_fixup(struct pci_dev *pdev) {