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From a7a8bf2f7df17f69a407abe21a14b3f0f2c7338c Mon Sep 17 00:00:00 2001
From: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
Date: Mon, 31 May 2021 15:39:59 +0800
Subject: [PATCH] serial/8250_aspeed: Make port type fixed
Make the UART port type fixed to 16550A to
avoid redundant probing.
Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
Change-Id: Id179725b1cd475cd52c18c43b6c312dcd912fc20
---
drivers/tty/serial/8250/8250_aspeed.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_aspeed.c b/drivers/tty/serial/8250/8250_aspeed.c
index fc14c86d3761..bb3955bb8c24 100644
--- a/drivers/tty/serial/8250/8250_aspeed.c
+++ b/drivers/tty/serial/8250/8250_aspeed.c
@@ -25,12 +25,12 @@
/* offsets for the aspeed virtual uart registers */
#define VUART_GCRA 0x20
-#define VUART_GCRA_VUART_EN BIT(0)
-#define VUART_GCRA_SIRQ_POLARITY BIT(1)
-#define VUART_GCRA_DISABLE_HOST_TX_DISCARD BIT(5)
+#define VUART_GCRA_VUART_EN BIT(0)
+#define VUART_GCRA_SIRQ_POLARITY BIT(1)
+#define VUART_GCRA_DISABLE_HOST_TX_DISCARD BIT(5)
#define VUART_GCRB 0x24
-#define VUART_GCRB_HOST_SIRQ_MASK GENMASK(7, 4)
-#define VUART_GCRB_HOST_SIRQ_SHIFT 4
+#define VUART_GCRB_HOST_SIRQ_MASK GENMASK(7, 4)
+#define VUART_GCRB_HOST_SIRQ_SHIFT 4
#define VUART_ADDRL 0x28
#define VUART_ADDRH 0x2c
@@ -429,7 +429,7 @@ static int ast8250_probe(struct platform_device *pdev)
spin_lock_init(&port->lock);
port->dev = dev;
- port->type = PORT_16550;
+ port->type = PORT_16550A;
port->irq = irq;
port->line = of_alias_get_id(dev->of_node, "serial");
port->handle_irq = ast8250_handle_irq;
@@ -439,7 +439,7 @@ static int ast8250_probe(struct platform_device *pdev)
port->uartclk = clk_get_rate(data->clk);
port->regshift = 2;
port->iotype = UPIO_MEM32;
- port->flags = UPF_FIXED_PORT | UPF_SHARE_IRQ;
+ port->flags = UPF_FIXED_TYPE | UPF_FIXED_PORT | UPF_SHARE_IRQ;
port->startup = ast8250_startup;
port->shutdown = ast8250_shutdown;
port->private_data = data;
--
2.17.1
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