From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S942466AbdEYPnL (ORCPT ); Thu, 25 May 2017 11:43:11 -0400 Received: from ale.deltatee.com ([207.54.116.67]:39640 "EHLO ale.deltatee.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S942409AbdEYPmn (ORCPT ); Thu, 25 May 2017 11:42:43 -0400 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net Cc: Logan Gunthorpe , Stephen Bates , Jeff Dike , Richard Weinberger , Al Viro Date: Thu, 25 May 2017 09:42:35 -0600 Message-Id: <1495726955-27497-1-git-send-email-logang@deltatee.com> X-Mailer: git-send-email 2.1.4 X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-kernel@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net, logang@deltatee.com, sbates@raithlin.com, jdike@addtoit.com, richard@nod.at, viro@ZenIV.linux.org.uk X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH v2] um: add dummy ioremap and iounmap functions X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The user mode architecture does not provide ioremap or iounmap, and because of this, the arch won't build when the functions are used in some core libraries. I have designs to use these functions in scatterlist.c where they'd almost certainly never be called on the um architecture but it does need to compile. Thus, if the function is ever hit it returns NULL. Signed-off-by: Logan Gunthorpe Signed-off-by: Stephen Bates Cc: Jeff Dike Cc: Richard Weinberger Cc: Al Viro --- Changes for v2: * Per feedback from Al Viro, the ioremap function was changed to fail if it ever actually gets used. arch/um/include/asm/io.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 arch/um/include/asm/io.h diff --git a/arch/um/include/asm/io.h b/arch/um/include/asm/io.h new file mode 100644 index 0000000..f734673 --- /dev/null +++ b/arch/um/include/asm/io.h @@ -0,0 +1,17 @@ +#ifndef _ASM_UM_IO_H +#define _ASM_UM_IO_H + +#define ioremap ioremap +static inline void __iomem *ioremap(phys_addr_t offset, size_t size) +{ + return NULL; +} + +#define iounmap iounmap +static inline void iounmap(void __iomem *addr) +{ +} + +#include + +#endif -- 2.1.4