[PATCH 5.8 275/633] tty: hvc: fix link error with CONFIG_SERIAL_CORE_CONSOLE=n

Greg Kroah-Hartman
2020-10-27T15:03:18Z

From: Yang Yingliang <yangyingliang@huawei.com>

[ Upstream commit 75fc65079d8253e1c25a5f8348111a85d71e0f01 ]

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@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20200919063535.2809707-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/tty/hvc/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/tty/hvc/Kconfig b/drivers/tty/hvc/Kconfig
index d1b27b0522a3c..8d60e0ff67b4d 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