From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752363AbaE0NNz (ORCPT ); Tue, 27 May 2014 09:13:55 -0400 Received: from mail-wi0-f173.google.com ([209.85.212.173]:59508 "EHLO mail-wi0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751984AbaE0NNy (ORCPT ); Tue, 27 May 2014 09:13:54 -0400 Message-ID: <53848F7C.6020508@linaro.org> Date: Tue, 27 May 2014 14:13:32 +0100 From: Daniel Thompson User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Arnd Bergmann , linux-arm-kernel@lists.infradead.org CC: Russell King , Paul Bolle , linaro-kernel@lists.linaro.org, patches@linaro.org, spear-devel@list.st.com, linux-kernel@vger.kernel.org Subject: Re: [RESEND PATCH v5 3/5] ARM: Conceal DEBUG_LL_UART_NONE from unsupported platforms References: <1398355246-29571-1-git-send-email-daniel.thompson@linaro.org> <1400857819-7975-4-git-send-email-daniel.thompson@linaro.org> <5013253.K6sZTxep7b@wuerfel> <6624276.NBS809VbNB@wuerfel> In-Reply-To: <6624276.NBS809VbNB@wuerfel> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 26/05/14 14:39, Arnd Bergmann wrote: >>> diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug >>> index eab8ecb..4c8d7db 100644 >>> --- a/arch/arm/Kconfig.debug >>> +++ b/arch/arm/Kconfig.debug >>> @@ -842,7 +842,18 @@ choice >>> >>> config DEBUG_LL_UART_NONE >>> bool "No low-level debugging UART" >>> - depends on !ARCH_MULTIPLATFORM >>> + depends on ARCH_AT91 || \ >>> + ARCH_CLPS711X || \ >>> + ARCH_FOOTBRIDGE || \ >>> + ARCH_KS8695 || \ >>> + ARCH_NETX || \ >>> + ARCH_OMAP1 || \ >>> + ARCH_SA1100 || \ >>> + ARCH_S3C24XX || \ >>> + ARCH_S3C64XX || \ >>> + ARCH_S5P64X0 || \ >>> + ARCH_S5PC100 || \ >>> + ARCH_S5PV210 >>> help >>> Say Y here if your platform doesn't provide a UART option >>> above. This relies on your platform choosing the right UART >> >> ARCH_S3C24XX has been moved over in linux-next to use debug/s3c24xx.S. >> A few others will likely move soon (AT91, CLPS711x, S5PV210), as the >> platforms get moved to ARCH_MULTIPLATFORM. The list in my patch came from: sundance$ find arch/arm -name "debug-macro.S" arch/arm/mach-at91/include/mach/debug-macro.S arch/arm/mach-clps711x/include/mach/debug-macro.S arch/arm/mach-footbridge/include/mach/debug-macro.S arch/arm/mach-ks8695/include/mach/debug-macro.S arch/arm/mach-netx/include/mach/debug-macro.S arch/arm/mach-omap1/include/mach/debug-macro.S arch/arm/mach-s3c64xx/include/mach/debug-macro.S arch/arm/mach-s5p64x0/include/mach/debug-macro.S arch/arm/mach-s5pc100/include/mach/debug-macro.S arch/arm/mach-s5pv210/include/mach/debug-macro.S arch/arm/mach-sa1100/include/mach/debug-macro.S In other words this patch lists of all platforms where DEBUG_LL_UART_NONE should not result in failure to compile the kernel. This list doesn't seem to have changed in linux-next. >> As an alternative to your patch, we could decide to move the remaining >> files as well. > > Follow-up: I also noticed that AT91, CLPS711X, FOOTBRIDGE and all the SAMSUNG > platforms already have an entry in the list, so DEBUG_LL_UART_NONE is redundant > for them. The below change should be enough. > > For AT91 this is actually better because the old AT91X40 support doesn't > have working DEBUG_LL support. This gets handled correctly by > AT91_DEBUG_LL_DBGU0/AT91_DEBUG_LL_DBGU1, but not DEBUG_LL_UART_NONE. I'm very happy to update my patch to follow this one. However since it will render the corresponding debug-macro.S unreachable by KBuild I like to nuke the file as well. Good idea? Daniel.