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 A6E58C433FE for ; Thu, 25 Nov 2021 12:48:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354900AbhKYMwC (ORCPT ); Thu, 25 Nov 2021 07:52:02 -0500 Received: from mail.kernel.org ([198.145.29.99]:45176 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347848AbhKYMtq (ORCPT ); Thu, 25 Nov 2021 07:49:46 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 14572610FB; Thu, 25 Nov 2021 12:46:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1637844395; bh=V49Dl6I3ETYyBXCva0Ab5YRCPF20sbpwGL5aEs5sgZE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Kvm31VUlPXoPnaVkKfH4RfPkFELOCasP8eM7ZRiPWKDrUYF7fe5tvMMhhoU+fzDiL 7SzZkIR9yvX9tPU7K3+kjN21luO04b9pUjXPL5Cw7ylhZOaGVHSIlqrLL8z4kC744P 5N1xI0mTznUKsgoDU6uyKayGJmQqqdWNSaQD9oOqNTZHMXhEKygg/PmVSu9R1yhrIa 86E47HhNcRElH1tekn2OEFdJav3JxOh0pctuDBBBaF6lY/oxwLRcqFSVQb1Rx86Uqj t9PNgSBTw2pKnN768RVJIz5Y/1Ag84yCWZdkqzRhRE+KelYvIrbd2DfTeFXTJ5JGof To1vc5sTxiVaA== Received: by pali.im (Postfix) id 6C55467E; Thu, 25 Nov 2021 13:46:34 +0100 (CET) From: =?UTF-8?q?Pali=20Roh=C3=A1r?= To: Thomas Petazzoni , Lorenzo Pieralisi , Rob Herring , =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= , Bjorn Helgaas , =?UTF-8?q?Marek=20Beh=C3=BAn?= Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 04/15] PCI: mvebu: Handle invalid size of read config request Date: Thu, 25 Nov 2021 13:45:54 +0100 Message-Id: <20211125124605.25915-5-pali@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20211125124605.25915-1-pali@kernel.org> References: <20211125124605.25915-1-pali@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Function mvebu_pcie_hw_rd_conf() does not handle invalid size. So correctly set read value to all-ones and return appropriate error return value PCIBIOS_BAD_REGISTER_NUMBER like in mvebu_pcie_hw_wr_conf() function. Signed-off-by: Pali Rohár Cc: stable@vger.kernel.org --- drivers/pci/controller/pci-mvebu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c index 08274132cdfb..19c6ee298442 100644 --- a/drivers/pci/controller/pci-mvebu.c +++ b/drivers/pci/controller/pci-mvebu.c @@ -261,6 +261,9 @@ static int mvebu_pcie_hw_rd_conf(struct mvebu_pcie_port *port, case 4: *val = readl_relaxed(conf_data); break; + default: + *val = 0xffffffff; + return PCIBIOS_BAD_REGISTER_NUMBER; } return PCIBIOS_SUCCESSFUL; -- 2.20.1