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Date: Mon, 30 Nov 2015 11:27:41 +0900 From: Masahiro Yamada <yamada.masahiro@...ionext.com> To: Andy Shevchenko <andy.shevchenko@...il.com> Cc: "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Peter Hurley <peter@...leysoftware.com>, Rob Herring <robherring2@...il.com> Subject: Re: The console log is doubled if earlycon is enabled Hi Andy, 2015-11-29 11:30 GMT+09:00 Andy Shevchenko <andy.shevchenko@...il.com>: > On Fri, Nov 27, 2015 at 12:21 PM, Masahiro Yamada > <yamada.masahiro@...ionext.com> wrote: >> Hi, >> >> >> If I add "earlycon" to the kernel parameter, the log message >> on the earlycon is also displayed to the regular console. >> In other words, the same log messages are displayed twice. >> >> I noticed this problem on v4.4-rc1. >> It has not been fixed in the mainline yet, I think. >> >> Anybody who has a clue? >> (I have not done git-bisect yet.) > > Does adding the following line in > drivers/tty/serial/8250/8250_early.c:: early_serial8250_setup() fix > the issue? > > device->con->flags &= ~CON_PRINTBUFFER; No. I tried that, but it did not fix the problem. -- Best Regards Masahiro Yamada -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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