[PATCH] serial: imx: Remove unused platform data support

* [PATCH] serial: imx: Remove unused platform data support
@ 2020-11-10 21:48 Fabio Estevam
  2020-11-11  2:08 ` [EXT] " Andy Duan
  2020-11-11  9:57 ` Uwe Kleine-König
  0 siblings, 2 replies; 5+ messages in thread
From: Fabio Estevam @ 2020-11-10 21:48 UTC (permalink / raw)
  To: gregkh; +Cc: s.hauer, linux-serial, fugang.duan, Fabio Estevam

Since 5.10-rc1 i.MX is a devicetree-only platform and the existing
platform data support in this driver was only useful for old non-devicetree
platforms.

Get rid of the platform data support since it is no longer used.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
 drivers/tty/serial/imx.c                 | 32 +++---------------------
 include/linux/platform_data/serial-imx.h | 15 -----------
 2 files changed, 3 insertions(+), 44 deletions(-)
 delete mode 100644 include/linux/platform_data/serial-imx.h

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 1731d9728865..7ce38ade9a8e 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -30,7 +30,6 @@
 #include <linux/dma-mapping.h>
 
 #include <asm/irq.h>
-#include <linux/platform_data/serial-imx.h>
 #include <linux/platform_data/dma-imx.h>
 
 #include "serial_mctrl_gpio.h"
@@ -2191,10 +2190,9 @@ static struct uart_driver imx_uart_uart_driver = {
 	.cons           = IMX_CONSOLE,
 };
 
-#ifdef CONFIG_OF
 /*
- * This function returns 1 iff pdev isn't a device instatiated by dt, 0 iff it
- * could successfully get all information from dt or a negative errno.
+ * This function returns 0 iff it could successfully get all information
+ * from dt or a negative errno.
  */
 static int imx_uart_probe_dt(struct imx_port *sport,
 			     struct platform_device *pdev)
@@ -2232,28 +2230,6 @@ static int imx_uart_probe_dt(struct imx_port *sport,
 
 	return 0;
 }
-#else
-static inline int imx_uart_probe_dt(struct imx_port *sport,
-				    struct platform_device *pdev)
-{
-	return 1;
-}
-#endif
-
-static void imx_uart_probe_pdata(struct imx_port *sport,
-				 struct platform_device *pdev)
-{
-	struct imxuart_platform_data *pdata = dev_get_platdata(&pdev->dev);
-
-	sport->port.line = pdev->id;
-	sport->devdata = (struct imx_uart_data	*) pdev->id_entry->driver_data;
-
-	if (!pdata)
-		return;
-
-	if (pdata->flags & IMXUART_HAVE_RTSCTS)
-		sport->have_rtscts = 1;
-}
 
 static enum hrtimer_restart imx_trigger_start_tx(struct hrtimer *t)
 {
@@ -2295,9 +2271,7 @@ static int imx_uart_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	ret = imx_uart_probe_dt(sport, pdev);
-	if (ret > 0)
-		imx_uart_probe_pdata(sport, pdev);
-	else if (ret < 0)
+	if (ret < 0)
 		return ret;
 
 	if (sport->port.line >= ARRAY_SIZE(imx_uart_ports)) {
diff --git a/include/linux/platform_data/serial-imx.h b/include/linux/platform_data/serial-imx.h
deleted file mode 100644
index 0844b21372c7..000000000000
--- a/include/linux/platform_data/serial-imx.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de>
- */
-
-#ifndef ASMARM_ARCH_UART_H
-#define ASMARM_ARCH_UART_H
-
-#define IMXUART_HAVE_RTSCTS (1<<0)
-
-struct imxuart_platform_data {
-	unsigned int flags;
-};
-
-#endif
-- 
2.17.1


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