linux-kernel - [PATCH -next v2] tty: hvc: fix link error with CONFIG_SERIAL_CORE

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Message-ID: <20200919063535.2809707-1-yangyingliang@huawei.com>
Date:   Sat, 19 Sep 2020 14:35:35 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>
CC:     <gregkh@...uxfoundation.org>
Subject: [PATCH -next v2] tty: hvc: fix link error with CONFIG_SERIAL_CORE_CONSOLE=n

aarch64-linux-gnu-ld: drivers/tty/hvc/hvc_dcc.o: in function `dcc_early_write':
hvc_dcc.c:(.text+0x164): undefined reference to `uart_console_write'

The driver uses the uart_console_write(), but SERIAL_CORE_CONSOLE is not
selected, so uart_console_write is not defined, then we get the error.
Fix this by selecting SERIAL_CORE_CONSOLE.

Fixes: d1a1af2cdf19 ("hvc: dcc: Add earlycon support")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 drivers/tty/hvc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/hvc/Kconfig b/drivers/tty/hvc/Kconfig
index d1b27b0522a3..8d60e0ff67b4 100644
--- a/drivers/tty/hvc/Kconfig
+++ b/drivers/tty/hvc/Kconfig
@@ -81,6 +81,7 @@ config HVC_DCC
 	bool "ARM JTAG DCC console"
 	depends on ARM || ARM64
 	select HVC_DRIVER
+	select SERIAL_CORE_CONSOLE
 	help
 	  This console uses the JTAG DCC on ARM to create a console under the HVC
 	  driver. This console is used through a JTAG only on ARM. If you don't have
-- 
2.25.1