From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Fri, 27 Apr 2018 16:03:06 +0200 (CEST) Received: from mail.kernel.org ([198.145.29.99]:44934 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S23991172AbeD0OC7No0pV (ORCPT ); Fri, 27 Apr 2018 16:02:59 +0200 Received: from localhost (LFbn-1-12247-202.w90-92.abo.wanadoo.fr [90.92.61.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E013A2189D; Fri, 27 Apr 2018 14:02:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E013A2189D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=fail smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Matt Redfearn , linux-mips@linux-mips.org, Ralf Baechle , Amit Pundir Subject: [PATCH 4.9 11/74] MIPS: Generic: Fix big endian CPUs on generic machine Date: Fri, 27 Apr 2018 15:58:01 +0200 Message-Id: <20180427135710.365986182@linuxfoundation.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180427135709.899303463@linuxfoundation.org> References: <20180427135709.899303463@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 63813 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: gregkh@linuxfoundation.org Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Matt Redfearn commit a3078e593b74fe196e69f122f03ff0b32f652c53 upstream. Big endian CPUs require SWAP_IO_SPACE enabled to swap accesses to little endian peripherals. Without this patch, big endian kernels fail to communicate with little endian periperals, such as PCI devices, on QEMU and FPGA based platforms. Signed-off-by: Matt Redfearn Fixes: eed0eabd12ef ("MIPS: generic: Introduce generic DT-based board support") Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/15105/ Signed-off-by: Ralf Baechle Cc: Amit Pundir Signed-off-by: Greg Kroah-Hartman --- arch/mips/Kconfig | 1 + 1 file changed, 1 insertion(+) --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -95,6 +95,7 @@ config MIPS_GENERIC select PCI_DRIVERS_GENERIC select PINCTRL select SMP_UP if SMP + select SWAP_IO_SPACE select SYS_HAS_CPU_MIPS32_R1 select SYS_HAS_CPU_MIPS32_R2 select SYS_HAS_CPU_MIPS32_R6