linux-kernel - [PATCH 3/3] serial: 8250: remove UART_CAP_TEMT on PORT_16550A

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Message-Id: <20210128233629.4164-4-etremblay@distech-controls.com>
Date:   Thu, 28 Jan 2021 18:36:29 -0500
From:   Eric Tremblay <etremblay@...tech-controls.com>
To:     gregkh@...uxfoundation.org
Cc:     jslaby@...e.com, andriy.shevchenko@...ux.intel.com,
        matwey.kornilov@...il.com, giulio.benetti@...ronovasrl.com,
        lukas@...ner.de, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        christoph.muellner@...obroma-systems.com, heiko@...ech.de,
        heiko.stuebner@...obroma-systems.com,
        Eric Tremblay <etremblay@...tech-controls.com>
Subject: [PATCH 3/3] serial: 8250: remove UART_CAP_TEMT on PORT_16550A_FSL64

That port does not have an interrupt on TEMT when using
the FIFO mode.

Signed-off-by: Eric Tremblay <etremblay@...tech-controls.com>
---
 drivers/tty/serial/8250/8250_of.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c
index 4efc62c0b25c..9a5bb6837949 100644
--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -225,6 +225,9 @@ static int of_platform_serial_probe(struct platform_device *ofdev)
 			&port8250.overrun_backoff_time_ms) != 0)
 		port8250.overrun_backoff_time_ms = 0;
 
+	if (port_type != PORT_16550A_FSL64)
+		port8250.capabilities |= UART_CAP_TEMT;
+
 	ret = serial8250_register_8250_port(&port8250);
 	if (ret < 0)
 		goto err_dispose;
-- 
2.17.1