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 11D62425899; Fri, 4 Sep 2026 06:18:02 +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=1788502683; cv=none; b=WS8MT2RF0tKCe7dnMg8dWSnAGwZ28FlkbtRfDGvf+OPTgE/Ht9qMzBANehwr7GPwjP68gNBU7TlxzgKvE2xSl6l6mUZXCDR70MXvaI8fSO61kHmJRA1p8z+Lj70DOyUoZsGfkANWrzynseFnFQfIHP3MsKtIC9CO7fQxWugnKnY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788502683; c=relaxed/simple; bh=k4xllYwQPbNEoTvsB/zoBzXBd226R/W8Hkcp3Shmbd8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jPJdzqe81/MIXFwL9Q6UgVoaVsDhOqISQaLZgA+OgOViCdYZxC3XqLMOSL+ZzGxWeAngjTsvOCFgPGQ/vL7XpLNly5RJTkfblFWvMN3tmcnsQuWBqrAEaxz5+lqctcCZrc1KgtvQpcbNl+0zJDK1b65aU5rLvOf4fu67uen3dzI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=nvE3ZpZE; 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="nvE3ZpZE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6ADF21F00A3D; Fri, 4 Sep 2026 06:18:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788502682; bh=3QCgbQgA8KHevmKtNcZLZ5eTVmYodeZP5QPGG2qkiaY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=nvE3ZpZEr+ETMbywjQ9Fd5UHaM/wg+aKJXEIBdRqpA1Heyxaf8xfQxt6BxyC0iZIT pIsN+we9QrAyFANd7eK+Ynfr4qd6Dwyp9KL1G6CsruwbirjB0h5OmzrTlxGy0Gv2// w1MGVeaAda6e+WkEsDxxNRplmJpbFzQXZLw8EvTo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tim Harvey , Bjorn Helgaas Subject: [PATCH 6.12 293/403] PCI: Add ACS quirk for Pericom PI7C9X2G608 switches [12d8:2608] Date: Fri, 4 Sep 2026 07:01:36 +0200 Message-ID: <20260904045741.511497712@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260904045734.806166532@linuxfoundation.org> References: <20260904045734.806166532@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 6.12-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 @@ -6204,6 +6204,10 @@ 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) {