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 2E8E5352022; Sat, 12 Sep 2026 15:37:57 +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=1789227479; cv=none; b=HyDFqGx3J5pwQxrfKWBA4xyszKBKL/K4LIydu8m8oW992Pl/C8vnVaPbPF/iza5ZQOfC3AfHUcfP46pO6aRYs++1RmDmTDRBPNTaMYthhg3xsLfjHTAmDNo5N/ysnRaMyMd9/2zTVPQkbwKSloA6NB2G75zbESxHBkeuDS8pzx0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789227479; c=relaxed/simple; bh=L9WzcQAfzKp1tIV8kx/QPO1eDVUa5GzRutbJ0siD0Dw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fZPENUZPGJ1LeB+9d+Qf848i79B9dpKab/ejMAi0RJC75Isf0qGAb+yiiCrwOF9VtU8kssz8XalaymaQlUyl0/rSX8oI6EFbhYBsG7eFQXzVVJ0Fi8cRd92SFOQ4EzypsNnwnDH3sMQx9wI6zLG7bchPdqyv+59KCUg0xiiRg80= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=u89anGkj; 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="u89anGkj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E301B1F000FF; Sat, 12 Sep 2026 15:37:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789227477; bh=9mlh0J+TJAAiY+gQEZ5kLfBY36STUCzW2dP6zYORLrY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=u89anGkjJNoHJapBIXIfbSCOS8LGVQdF8B9NWTKQfWk1n7okAlv8w8sepYsHBpNSf 7VE4certNhsat9B7xLa3Eaj7cl8W27O1Be4J2+LIvE3452BkfYl6hc5coU0yIUusTJ Ccgxzy/5qofRWrln5PPQQKQ0QlZRhPVUz5Zzvrgc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tim Harvey , Bjorn Helgaas Subject: [PATCH 6.1 0187/1191] PCI: Add ACS quirk for Pericom PI7C9X2G608 switches [12d8:2608] Date: Sat, 12 Sep 2026 08:48:35 +0200 Message-ID: <20260912065552.413801596@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065548.086904252@linuxfoundation.org> References: <20260912065548.086904252@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 6.1-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 @@ -6106,6 +6106,10 @@ 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) {