linux-kernel - [PATCH] serial: 8250: Enable 16550A variants by default on non-x86

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Message-ID: <d32bdbf9fed2719c1180228464ba84dfcdeb5aa5.1590482037.git.josh@joshtriplett.org>
Date:   Tue, 26 May 2020 01:40:06 -0700
From:   Josh Triplett <josh@...htriplett.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] serial: 8250: Enable 16550A variants by default on non-x86

Some embedded devices still use these serial ports; make sure they're
still enabled by default on architectures more likely to have them, to
avoid rendering someone's console unavailable.

Fixes: dc56ecb81a0a ("serial: 8250: Support disabling mdelay-filled probes of 16550A variants")
Signed-off-by: Josh Triplett <josh@...htriplett.org>
---

Based on user reports from embedded devices that need these variants.

 drivers/tty/serial/8250/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig
index af0688156dd0..8195a31519ea 100644
--- a/drivers/tty/serial/8250/Kconfig
+++ b/drivers/tty/serial/8250/Kconfig
@@ -63,6 +63,7 @@ config SERIAL_8250_PNP
 config SERIAL_8250_16550A_VARIANTS
 	bool "Support for variants of the 16550A serial port"
 	depends on SERIAL_8250
+	default !X86
 	help
 	  The 8250 driver can probe for many variants of the venerable 16550A
 	  serial port. Doing so takes additional time at boot.
-- 
2.27.0.rc0