From patchwork Thu Apr 2 19:38:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lad Prabhakar X-Patchwork-Id: 11471393 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D3FA714DD for ; Thu, 2 Apr 2020 19:39:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BBF322077D for ; Thu, 2 Apr 2020 19:39:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389301AbgDBTj3 (ORCPT ); Thu, 2 Apr 2020 15:39:29 -0400 Received: from relmlor1.renesas.com ([210.160.252.171]:37705 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2389290AbgDBTj3 (ORCPT ); Thu, 2 Apr 2020 15:39:29 -0400 X-IronPort-AV: E=Sophos;i="5.72,336,1580742000"; d="scan'208";a="43555694" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 03 Apr 2020 04:39:27 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id E7F9D40C4F75; Fri, 3 Apr 2020 04:39:20 +0900 (JST) From: Lad Prabhakar To: Bjorn Helgaas , Rob Herring , Mark Rutland , Geert Uytterhoeven , Magnus Damm , Kishon Vijay Abraham I , Lorenzo Pieralisi , Marek Vasut , Yoshihiro Shimoda , linux-pci@vger.kernel.org Cc: Catalin Marinas , Will Deacon , Arnd Bergmann , Greg Kroah-Hartman , Andrew Murray , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-renesas-soc@vger.kernel.org, Chris Paterson , Frank Rowand , Gustavo Pimentel , Jingoo Han , Simon Horman , Shawn Lin , Tom Joseph , Heiko Stuebner , linux-rockchip@lists.infradead.org, Lad Prabhakar , Lad Prabhakar Subject: [PATCH v6 05/11] PCI: rcar: Fix calculating mask for PCIEPAMR register Date: Thu, 2 Apr 2020 20:38:33 +0100 Message-Id: <1585856319-4380-6-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1585856319-4380-1-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <1585856319-4380-1-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The mask value was calculated incorrectly for PCIEPAMR register if the size was less than 128 bytes. Fix this issue by adding a check on size. Signed-off-by: Lad Prabhakar Reviewed-by: Yoshihiro Shimoda --- drivers/pci/controller/pcie-rcar.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/pcie-rcar.c b/drivers/pci/controller/pcie-rcar.c index b82f200985ec..b46c69ac62f2 100644 --- a/drivers/pci/controller/pcie-rcar.c +++ b/drivers/pci/controller/pcie-rcar.c @@ -75,7 +75,10 @@ void rcar_pcie_set_outbound(struct rcar_pcie *pcie, int win, * keeps things pretty simple. */ size = resource_size(res); - mask = (roundup_pow_of_two(size) / SZ_128) - 1; + if (size > 128) + mask = (roundup_pow_of_two(size) / SZ_128) - 1; + else + mask = 0x0; rcar_pci_write_reg(pcie, mask << 7, PCIEPAMR(win)); if (res->flags & IORESOURCE_IO)