From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 2C9462C0F97; Wed, 25 Feb 2026 06:56:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772002581; cv=none; b=PLxj6111aTTApuJqnOjxymmzgGfPGU+Z0+sWg5GDdQubfHI3/v7tW486U0RPsoUeiW8uw8QhyQwp9TyJGQqzJ4k1fVblzkKBDY1QbIBOyZUd3AaPF4+usaBAG4ORs8Fk2x/yza7h37JINRzrTadOUlZIx1cpPBHpDaTV5dolnGE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772002581; c=relaxed/simple; bh=jSCkjQO6jYj9T2uaGHqD25rMJxkt0U/R540zryvI/O0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=R3idXu9mwdB/A/NeRga9ei+/NTsHvaYa56PcWBLKjmZafLrCC7VFBMtg2AFrjxnSg8tcPsBLhyexWjJ5U5PSzhO+EB6ZwpsPzwe6Jypyty0zi0VwZQdsZbF5VYhn0ysKD4Uvi/9V8lKmPESw/ff1nH6KmrzsFfnNpO+ixghKLqY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=kHSnjJKA; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="kHSnjJKA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 045C0C116D0; Wed, 25 Feb 2026 06:56:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1772002581; bh=jSCkjQO6jYj9T2uaGHqD25rMJxkt0U/R540zryvI/O0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kHSnjJKAkoPcsqOEG3EZZnNrWTempdD/3Jzm0HPktNmqFq0OxOXci60Px4Wv2knI+ PcsOKLd7kdMyCEmDau2EJAQDmhkro5hnAzxFNw2eCYLEcsY7CWWul8XrCJpzWQvteO ZTvGNNsMLR53m676O3cSM2sgckBx14LEvI+FNNSQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Nicolas Cavallari , Bjorn Helgaas , Sasha Levin Subject: [PATCH 6.18 316/641] PCI: Add ACS quirk for Pericom PI7C9X2G404 switches [12d8:b404] Date: Tue, 24 Feb 2026 17:20:42 -0800 Message-ID: <20260225012356.374185620@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260225012348.915798704@linuxfoundation.org> References: <20260225012348.915798704@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nicolas Cavallari [ Upstream commit 5907a90551e9f7968781f3a6ab8684458959beb3 ] 12d8:b404 is apparently another PCI ID for Pericom PI7C9X2G404 (as identified by the chip silkscreen and lspci). It is also affected by the PI7C9X2G errata (e.g. a network card attached to it fails under load when P2P Redirect Request is enabled), so apply the same quirk to this PCI ID too. PCI bridge [0604]: Pericom Semiconductor PI7C9X2G404 EV/SV PCIe2 4-Port/4-Lane Packet Switch [12d8:b404] (rev 01) Fixes: acd61ffb2f16 ("PCI: Add ACS quirk for Pericom PI7C9X2G switches") Closes: https://lore.kernel.org/all/a1d926f0-4cb5-4877-a4df-617902648d80@green-communications.fr/ Signed-off-by: Nicolas Cavallari Signed-off-by: Bjorn Helgaas Link: https://patch.msgid.link/20260119160915.26456-1-nicolas.cavallari@green-communications.fr Signed-off-by: Sasha Levin --- drivers/pci/quirks.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index c7e733beaab03..9e073321b2dd2 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -6189,6 +6189,10 @@ DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2303, pci_fixup_pericom_acs_store_forward); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2303, pci_fixup_pericom_acs_store_forward); +DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0xb404, + pci_fixup_pericom_acs_store_forward); +DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0xb404, + pci_fixup_pericom_acs_store_forward); static void nvidia_ion_ahci_fixup(struct pci_dev *pdev) { -- 2.51.0