From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3FCF6C4361B for ; Wed, 10 Mar 2021 13:25:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1A2D964FF7 for ; Wed, 10 Mar 2021 13:25:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233274AbhCJNZQ (ORCPT ); Wed, 10 Mar 2021 08:25:16 -0500 Received: from mail.kernel.org ([198.145.29.99]:46164 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233007AbhCJNYq (ORCPT ); Wed, 10 Mar 2021 08:24:46 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 659B964FEF; Wed, 10 Mar 2021 13:24:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1615382685; bh=pNeHKl7PBP6p8g7DY5rL5HNpimmaaw/uXF3RzwUa24Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VT7fM/4HJSzWw9UElrDHxBNvQSdNz5IF4xmD4jno8qnw4T8rmi+9DbdRPASaRnGsw PvnyGwN3z8rkKCglguFJhdX5IL6fz/1h62v7of1aNeG6ZmnVLYreo/ZvmK4pWf5HTg ZM/c3eEQwlhL2LmmRkwksDD2yilK4V5A3mRO6Aq0= From: gregkh@linuxfoundation.org To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Daniel Lee Kruse , Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 5.10 22/49] media: cx23885: add more quirks for reset DMA on some AMD IOMMU Date: Wed, 10 Mar 2021 14:23:33 +0100 Message-Id: <20210310132322.655298973@linuxfoundation.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210310132321.948258062@linuxfoundation.org> References: <20210310132321.948258062@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Greg Kroah-Hartman From: Daniel Lee Kruse [ Upstream commit dbf0b3a7b719eb3f72cb53c2ce7d34a012a9c261 ] On AMD Family 15h (Models 30h-3fh), I/O Memory Management Unit RiSC engine sometimes stalls, requiring a reset. As result, MythTV and w-scan won't scan channels on the AMD Kaveri APU with the Hauppauge QuadHD TV tuner card. For the solution I added the Input/Output Memory Management Unit's PCI Identity of 0x1423 to the broken_dev_id[] array, which is used by a quirks logic meant to fix similar problems with other AMD chipsets. Signed-off-by: Daniel Lee Kruse Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/pci/cx23885/cx23885-core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/media/pci/cx23885/cx23885-core.c b/drivers/media/pci/cx23885/cx23885-core.c index 4b0c53f61fb7..4e8132d4b2df 100644 --- a/drivers/media/pci/cx23885/cx23885-core.c +++ b/drivers/media/pci/cx23885/cx23885-core.c @@ -2074,6 +2074,10 @@ static struct { * 0x1451 is PCI ID for the IOMMU found on Ryzen */ { PCI_VENDOR_ID_AMD, 0x1451 }, + /* According to sudo lspci -nn, + * 0x1423 is the PCI ID for the IOMMU found on Kaveri + */ + { PCI_VENDOR_ID_AMD, 0x1423 }, }; static bool cx23885_does_need_dma_reset(void) -- 2.30.1