From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Hurley Subject: Re: [PATCH] serial: earlycon requires console support Date: Sat, 11 Apr 2015 11:21:30 -0400 Message-ID: <55293BFA.1090201@hurleysoftware.com> References: <5009638.HyplLv73fU@wuerfel> <5529241F.2040308@hurleysoftware.com> <19182495.QL5edbqjaN@wuerfel> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <19182495.QL5edbqjaN@wuerfel> Sender: linux-kernel-owner@vger.kernel.org To: Arnd Bergmann , linux-arm-kernel@lists.infradead.org Cc: Greg Kroah-Hartman , Alim Akhtar , tfiga@google.com, linux-kernel@vger.kernel.org, Chanwoo Choi , linux-serial@vger.kernel.org, Jiri Slaby , Marek Szyprowski List-Id: linux-serial@vger.kernel.org On 04/11/2015 11:00 AM, Arnd Bergmann wrote: > On Saturday 11 April 2015 09:39:43 Peter Hurley wrote: >> Hi Arnd, >> >> On 04/10/2015 06:01 PM, Arnd Bergmann wrote: >>> A configuration that enables earlycon but not the core console >>> code causes a link error: >>> >>> drivers/built-in.o: In function `setup_earlycon': >>> drivers/tty/serial/earlycon.c:70: undefined reference to `uart_parse_earlycon' >>> >>> That error can be triggered by the newly added samsung earlycon support, >>> which is missing a 'select' statement. This patch adds the 'select' >>> to make serial-samsung behave like the other drivers. >> >> Since Kconfig has a separate option for enabling console on Samsung, >> I'd rather move uart_parse_earlycon() and enclose it in >> >> #if defined(CONFIG_SERIAL_CORE_CONSOLE) || defined(CONFIG_SERIAL_EARLYCON) >> ... >> #endif >> >> I'll send a fix for that right now. >> > > Hmm, maybe the 'select SERIAL_EARLYCON' should just be under SERIAL_SAMSUNG_CONSOLE > then? Upon looking closer at the other drivers, that seems to be the common > model, and I don't know what it means to have EARLYCON but no CORE_CONSOLE > enabled. Yeah, maybe that's better; will you send that? Regards, Peter Hurley