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 2FE3218B0A; Wed, 25 Feb 2026 01:34:44 +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=1771983284; cv=none; b=JEiSEwV1AAR3faqYBHPbMNDjSMOA1ACtJrwfaFlZnacY87/4Y1zefGfpHJpfovBJ5PToK5LPT69atLrQ8ZQbXAVjmT84PUn+h9HfjPJgB6SNpJ14bMwWsHut/HKwvD0hzyaNy+AAhJxMutZzIWu/X7Yu3lVfmBNdB/EpxKGjcpM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771983284; c=relaxed/simple; bh=V67fGRHSHPj9Yf3aBtySafwaWxzi98NviC843VmCtHg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HgU8nrX+KdmGIl9u1rGUHFhH35D+wIvtkfqyIELNSw3Hw9epdBnetj5891rUUYFUIw0cYGXtlEqvsx33JbEaTIfWRHBmh7bDW3oUL1Tmuui1v48ON0uT0ycBykH2nqBSNUWQ6Szl7NDUvrU3alDgAVmKbNT5zEuBISraT+hFJWU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=BmG5SSPc; 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="BmG5SSPc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DD395C116D0; Wed, 25 Feb 2026 01:34:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1771983284; bh=V67fGRHSHPj9Yf3aBtySafwaWxzi98NviC843VmCtHg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BmG5SSPcfXbOINUDzfwgWnGrR6vzvaB/KmPEwh9APPC10Bv3NhNotNq4dYab3myrk OqIZEpyZrwaL3dcF9lqU0JIhNpzY+LuTSF9x7MDro/CP4Ml0Jq0wND7grbDy6Z3Svz vX78dochGKU9yG4SWKhKY11+gpHN70H033aJJiEg= 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 6.19 421/781] PCI: Add ACS quirk for Pericom PI7C9X2G404 switches [12d8:b404] Date: Tue, 24 Feb 2026 17:18:50 -0800 Message-ID: <20260225012410.026092724@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260225012359.695468795@linuxfoundation.org> References: <20260225012359.695468795@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 6.19-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 211b7f72d103e..6df78efd7f6dc 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