linux-kernel - [RFC PATCH 1/4] serial: uartps: Remove console

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Message-Id: <bd75a2ab5838ae1cf44af667e24be2f02c2e9f3c.1500629544.git.michal.simek@xilinx.com>
Date:   Fri, 21 Jul 2017 11:32:24 +0200
From:   Michal Simek <michal.simek@...inx.com>
To:     linux-kernel@...r.kernel.org, monstr@...str.eu,
        Alan Cox <gnomes@...rguk.ukuu.org.uk>
Cc:     Sören Brinkmann <soren.brinkmann@...inx.com>,
        Jiri Slaby <jslaby@...e.com>, linux-serial@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: [RFC PATCH 1/4] serial: uartps: Remove console_initcall from the driver

register_console() is called from
uart_add_one_port()->uart_configure_port()
that's why register_console() is called twice.

This patch remove console_initcall to call register_console() only from
one location.

Also based on my tests cdns_uart_console_setup() is not called
from the first register_console() call.

Signed-off-by: Michal Simek <michal.simek@...inx.com>
---

I am not quite sure about this because console_initcall is called
early but I can see any difference in usage.
pl011 is not calling this but others are doing it.

---
 drivers/tty/serial/xilinx_uartps.c | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index fde55dcdea5a..4614349403c1 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -1298,20 +1298,6 @@ static int __init cdns_uart_console_setup(struct console *co, char *options)
 	.index	= -1, /* Specified on the cmdline (e.g. console=ttyPS ) */
 	.data	= &cdns_uart_uart_driver,
 };
-
-/**
- * cdns_uart_console_init - Initialization call
- *
- * Return: 0 on success, negative errno otherwise
- */
-static int __init cdns_uart_console_init(void)
-{
-	register_console(&cdns_uart_console);
-	return 0;
-}
-
-console_initcall(cdns_uart_console_init);
-
 #endif /* CONFIG_SERIAL_XILINX_PS_UART_CONSOLE */
 
 static struct uart_driver cdns_uart_uart_driver = {
-- 
1.9.1