linux-kernel - [PATCH v2 4/4] serial: 8250_pnp: Override pnp suspend for no_console

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Date:	Wed,  5 Nov 2014 14:02:05 -0500
From:	Peter Hurley <peter@...leysoftware.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Cc:	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jiri Slaby <jslaby@...e.cz>,
	Peter Hurley <peter@...leysoftware.com>
Subject: [PATCH v2 4/4] serial: 8250_pnp: Override pnp suspend for no_console_suspend

Prevent PNP bus from powering down the serial console device
when suspending if the no_console_suspend command line option is set.

Signed-off-by: Peter Hurley <peter@...leysoftware.com>
---
 drivers/tty/serial/8250/8250_pnp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/8250/8250_pnp.c b/drivers/tty/serial/8250/8250_pnp.c
index 50b7c89..4aefaf2 100644
--- a/drivers/tty/serial/8250/8250_pnp.c
+++ b/drivers/tty/serial/8250/8250_pnp.c
@@ -487,7 +487,7 @@ serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
 
 	if (uart_console(&port8250->port) && !console_suspend_enabled) {
 		info->override_disable = !!(dev->capabilities & PNP_DISABLE);
-		dev->capabilities &= ~PNP_DISABLE;
+		dev->capabilities &= ~(PNP_DISABLE | PNP_SUSPEND);
 	}
 
 	pnp_set_drvdata(dev, info);
@@ -502,6 +502,7 @@ static void serial_pnp_remove(struct pnp_dev *dev)
 		serial8250_unregister_port(info->line);
 		if (info->override_disable)
 			dev->capabilities |= PNP_DISABLE;
+		dev->capabilities |= PNP_SUSPEND;
 	}
 }
 
-- 
2.1.3

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