Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755254AbaFRT7L (ORCPT ); Wed, 18 Jun 2014 15:59:11 -0400 Received: from mail-vc0-f171.google.com ([209.85.220.171]:63093 "EHLO mail-vc0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755003AbaFRT7J (ORCPT ); Wed, 18 Jun 2014 15:59:09 -0400 MIME-Version: 1.0 In-Reply-To: <53A11E60.5030704@gmail.com> References: <53A11E60.5030704@gmail.com> Date: Thu, 19 Jun 2014 03:59:08 +0800 Message-ID: Subject: Re: [PATCH] arch/score/include/asm/io.h: Add generic io map functions when MMU enabled From: Lennox Wu To: Chen Gang Cc: Liqin Chen , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Chen, Although "SuperH Timer Support" are never used in our platforms, we can still consider if these functions are necessary. Could you send the config to us? Best, Lennox 2014-06-18 13:06 GMT+08:00 Chen Gang : > score did not implement some io map functions when MMU enabled, so need > add generic io map functions, just like some other architectures have > done (e.g. sparc64, s390, and mn10300), or will cause compiling issue. > > The related error (allmodconfig under score): > > CC drivers/clocksource/sh_cmt.o > drivers/clocksource/sh_cmt.c: In function 'sh_cmt_map_memory': > drivers/clocksource/sh_cmt.c:932:2: error: implicit declaration of function 'ioremap_nocache' [-Werror=implicit-function-declaration] > cmt->mapbase = ioremap_nocache(mem->start, resource_size(mem)); > ^ > drivers/clocksource/sh_cmt.c:932:15: warning: assignment makes pointer from integer without a cast > cmt->mapbase = ioremap_nocache(mem->start, resource_size(mem)); > ^ > drivers/clocksource/sh_cmt.c: In function 'sh_cmt_map_memory_legacy': > drivers/clocksource/sh_cmt.c:953:18: warning: assignment makes pointer from integer without a cast > cmt->mapbase_ch = ioremap_nocache(res->start, resource_size(res)); > ^ > drivers/clocksource/sh_cmt.c:963:15: warning: assignment makes pointer from integer without a cast > cmt->mapbase = ioremap_nocache(res2 ? res2->start : > ^ > drivers/clocksource/sh_cmt.c:968:3: error: implicit declaration of function 'iounmap' [-Werror=implicit-function-declaration] > iounmap(cmt->mapbase_ch); > ^ > cc1: some warnings being treated as errors > make[2]: *** [drivers/clocksource/sh_cmt.o] Error 1 > make[1]: *** [drivers/clocksource] Error 2 > make: *** [drivers] Error 2 > > Signed-off-by: Chen Gang > --- > arch/score/include/asm/io.h | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > > diff --git a/arch/score/include/asm/io.h b/arch/score/include/asm/io.h > index 574c8827..d67aeea 100644 > --- a/arch/score/include/asm/io.h > +++ b/arch/score/include/asm/io.h > @@ -3,6 +3,22 @@ > > #include > > +#ifdef CONFIG_MMU > +static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size) > +{ > + return (void __iomem *) (unsigned long)offset; > +} > + > +#define __ioremap(offset, size, flags) ioremap(offset, size) > + > +#define ioremap_nocache ioremap > +#define ioremap_wc ioremap_nocache > + > +static inline void iounmap(void __iomem *addr) > +{ > +} > +#endif > + > #define virt_to_bus virt_to_phys > #define bus_to_virt phys_to_virt > #endif /* _ASM_SCORE_IO_H */ > -- > 1.9.2.459.g68773ac -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/