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Thu, 13 Feb 2020 07:17:02 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id TYSyMjnOf7yr; Thu, 13 Feb 2020 07:17:02 +0100 (CET) Received: from [192.168.4.90] (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 815C38B752; Thu, 13 Feb 2020 07:17:01 +0100 (CET) Subject: Re: [Regression 5.6-rc1][Bisected b6231ea2b3c6] Powerpc 8xx doesn't boot anymore To: Qiang Zhao , Rasmus Villemoes , Leo Li , Greg Kroah-Hartman References: <0d45fa64-51ee-0052-cb34-58c770c5b3ce@c-s.fr> From: Christophe Leroy Message-ID: <0c217693-7c73-1696-8a86-e81dbabefe02@c-s.fr> Date: Thu, 13 Feb 2020 07:17:01 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Scott Wood , "linuxppc-dev@lists.ozlabs.org" , LKML , "linux-arm-kernel@lists.infradead.org" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Le 13/02/2020 à 04:35, Qiang Zhao a écrit : > On 02/12/2020 22:50 PM, Christophe Leroy wrote: >> -----Original Message----- >> From: Christophe Leroy >> Sent: 2020年2月12日 22:50 >> To: Rasmus Villemoes ; Leo Li >> ; Qiang Zhao ; Greg >> Kroah-Hartman >> Cc: Scott Wood ; linuxppc-dev@lists.ozlabs.org; LKML >> ; linux-arm-kernel@lists.infradead.org >> Subject: Re: [Regression 5.6-rc1][Bisected b6231ea2b3c6] Powerpc 8xx doesn't >> boot anymore >> >> --- >> diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c >> b/drivers/tty/serial/cpm_uart/cpm_uart_core.c >> index 4cabded8390b..341d682ec6eb 100644 >> --- a/drivers/tty/serial/cpm_uart/cpm_uart_core.c >> +++ b/drivers/tty/serial/cpm_uart/cpm_uart_core.c >> @@ -1351,6 +1351,7 @@ static int __init cpm_uart_console_setup(struct >> console *co, char *options) >> clrbits32(&pinfo->sccp->scc_gsmrl, SCC_GSMRL_ENR | >> SCC_GSMRL_ENT); >> } >> >> + cpm_muram_init(); >> ret = cpm_uart_allocbuf(pinfo, 1); >> >> if (ret) >> > How about the patch like below? Just a draft. Yes, I see the idea. I think we could go for something like that. But in the powerpc 8xx case, we are talking about cpm_init(), not qe_init(). And maybe the return code should be checked, because if it's not 0, cpm_muram_init() won't have been called. Thanks, Christophe