From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753795AbcBJKvG (ORCPT ); Wed, 10 Feb 2016 05:51:06 -0500 Received: from mail-pf0-f182.google.com ([209.85.192.182]:34255 "EHLO mail-pf0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752459AbcBJKvD (ORCPT ); Wed, 10 Feb 2016 05:51:03 -0500 From: Sudip Mukherjee To: Steven Miao Cc: linux-kernel@vger.kernel.org, kernel-testers@vger.kernel.org, Andrew Morton , adi-buildroot-devel@lists.sourceforge.net, Sudip Mukherjee Subject: [PATCH] blackfin: define dummy pgprot_writecombine for !MMU Date: Wed, 10 Feb 2016 16:20:54 +0530 Message-Id: <1455101454-25441-1-git-send-email-sudipm.mukherjee@gmail.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org blackfin allmodconfig build fails with the error: ../sound/core/pcm_native.c: In function 'snd_pcm_lib_default_mmap': ../sound/core/pcm_native.c:3386:24: error: implicit declaration of function 'pgprot_writecombine' [-Werror=implicit-function-declaration] area->vm_page_prot = pgprot_writecombine(area->vm_page_prot); ^ ../sound/core/pcm_native.c:3386:22: error: incompatible types when assigning to type 'pgprot_t {aka struct }' from type 'int' area->vm_page_prot = pgprot_writecombine(area->vm_page_prot); ^ When !MMU, asm-generic will not define default pgprot_writecombine, so blackfin needs to define it by itself. Signed-off-by: Sudip Mukherjee --- Build log is at https://travis-ci.org/sudipm-mukherjee/parport/jobs/108209182 The patch idea is from: 65b9ab888cd7 ("arch/c6x/include/asm/pgtable.h: define dummy pgprot_writecombine for !MMU") arch/blackfin/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/blackfin/include/asm/pgtable.h b/arch/blackfin/include/asm/pgtable.h index b88a155..c1ee3d6 100644 --- a/arch/blackfin/include/asm/pgtable.h +++ b/arch/blackfin/include/asm/pgtable.h @@ -97,6 +97,8 @@ extern unsigned long get_fb_unmapped_area(struct file *filp, unsigned long, unsigned long); #define HAVE_ARCH_FB_UNMAPPED_AREA +#define pgprot_writecombine pgprot_noncached + #include #endif /* _BLACKFIN_PGTABLE_H */ -- 1.9.1