From ddde708217af6d5fe43c0086247c05ed317076b4 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Sun, 17 Nov 2013 14:00:18 +0100
Subject: [PATCH] dell-laptop: If there is no hwswitch, then clear all
hw-controlled bits
To ensure we don't enter any hw-switch related code paths on machines without
a hw-switch.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
---
drivers/platform/x86/dell-laptop.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index bae932b60babd..48fabf6b6ecb6 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -548,6 +548,9 @@ static int __init dell_setup_rfkill(void)
buffer->input[0] = 0x2;
dell_send_request(buffer, 17, 11);
hwswitch_state = buffer->output[1];
+ /* If there is no hwswitch, then clear all hw-controlled bits */
+ if (!(status & BIT(0)))
+ hwswitch_state &= ~7;
release_buffer();
if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) {
--
2.30.2