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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 54256C25B0E for ; Sun, 14 Aug 2022 16:33:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242314AbiHNQcm (ORCPT ); Sun, 14 Aug 2022 12:32:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42572 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242604AbiHNQax (ORCPT ); Sun, 14 Aug 2022 12:30:53 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AE4AF5F78; Sun, 14 Aug 2022 09:25:34 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 58413B80B7C; Sun, 14 Aug 2022 16:25:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DEAC0C433D6; Sun, 14 Aug 2022 16:25:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1660494332; bh=cKwuaklraC8oBJFY7SqgVzYD/+87TZcMwmlJxnlR3T0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jUn4nEENrWpONykhfAMBhv20s3RUVyRkZ/OHMYPFHGWkBOM//pSTKoxBcMeVv2XnX 7vZg98SCgyQLjP3WrhlYK+kmdl59zPJ3HU3lxM6ORnrQpR2tBnJV+EVyzBcWrMIo1P b4MxOMtOzFADb5iK16fj73dAYHtjPGWFyTVojkoyxUNF8VNw2IYMwwLJVqtIG5FBTy OHGeBPk3p1owiWiNvyei0ZyzwgYFlrtYDAv+mLHgpeRxx4KnOiurgVGpGOs+nIhotN ubA22gu/kaG2pFToDApt3TYXN96P3EDlAdnR0maUcduv8ccMXpC0uLsLT9aAtQIdNL oL5ezqSqSeHgw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Alexey Kardashevskiy , Michael Ellerman , Sasha Levin , akpm@linux-foundation.org, rppt@kernel.org, tglx@linutronix.de, christophe.leroy@csgroup.eu, nick.child@ibm.com, linuxppc-dev@lists.ozlabs.org Subject: [PATCH AUTOSEL 5.18 28/39] powerpc/ioda/iommu/debugfs: Generate unique debugfs entries Date: Sun, 14 Aug 2022 12:23:17 -0400 Message-Id: <20220814162332.2396012-28-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220814162332.2396012-1-sashal@kernel.org> References: <20220814162332.2396012-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Alexey Kardashevskiy [ Upstream commit d73b46c3c1449bf27f793b9d9ee86ed70c7a7163 ] The iommu_table::it_index is a LIOBN which is not initialized on PowerNV as it is not used except IOMMU debugfs where it is used for a node name. This initializes it_index witn a unique number to avoid warnings and have a node for every iommu_table. This should not cause any behavioral change without CONFIG_IOMMU_DEBUGFS. Signed-off-by: Alexey Kardashevskiy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20220714080800.3712998-1-aik@ozlabs.ru Signed-off-by: Sasha Levin --- arch/powerpc/platforms/powernv/pci-ioda.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index b722ac902269..0f193772c6fa 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -1618,6 +1618,7 @@ static void pnv_pci_ioda1_setup_dma_pe(struct pnv_phb *phb, tbl->it_ops = &pnv_ioda1_iommu_ops; pe->table_group.tce32_start = tbl->it_offset << tbl->it_page_shift; pe->table_group.tce32_size = tbl->it_size << tbl->it_page_shift; + tbl->it_index = (phb->hose->global_number << 16) | pe->pe_number; if (!iommu_init_table(tbl, phb->hose->node, 0, 0)) panic("Failed to initialize iommu table"); @@ -1788,6 +1789,7 @@ static long pnv_pci_ioda2_setup_default_config(struct pnv_ioda_pe *pe) res_end = min(window_size, SZ_4G) >> tbl->it_page_shift; } + tbl->it_index = (pe->phb->hose->global_number << 16) | pe->pe_number; if (iommu_init_table(tbl, pe->phb->hose->node, res_start, res_end)) rc = pnv_pci_ioda2_set_window(&pe->table_group, 0, tbl); else -- 2.35.1