linux-kernel - [PATCH 3.16.y-ckt 079/185] ideapad: fix software rfkill setting

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Message-Id: <1436951580-15977-80-git-send-email-luis.henriques@canonical.com>
Date:	Wed, 15 Jul 2015 10:11:14 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Arnd Bergmann <arnd@...db.de>,
	Darren Hart <dvhart@...ux.intel.com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 079/185] ideapad: fix software rfkill setting

3.16.7-ckt15 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Arnd Bergmann <arnd@...db.de>

commit 4b200b4604bec3388426159f1656109d19fadf6e upstream.

This fixes a several year old regression that I found while trying
to get the Yoga 3 11 to work. The ideapad_rfk_set function is meant
to send a command to the embedded controller through ACPI, but
as of c1f73658ed, it sends the index of the rfkill device instead
of the command, and ignores the opcode field.

This changes it back to the original behavior, which indeed
flips the rfkill state as seen in the debugfs interface.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Fixes: c1f73658ed ("ideapad: pass ideapad_priv as argument (part 2)")
Signed-off-by: Darren Hart <dvhart@...ux.intel.com>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/platform/x86/ideapad-laptop.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index 11712d1dbd17..627d43f3f078 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -464,8 +464,9 @@ const struct ideapad_rfk_data ideapad_rfk_data[] = {
 static int ideapad_rfk_set(void *data, bool blocked)
 {
 	struct ideapad_rfk_priv *priv = data;
+	int opcode = ideapad_rfk_data[priv->dev].opcode;
 
-	return write_ec_cmd(priv->priv->adev->handle, priv->dev, !blocked);
+	return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked);
 }
 
 static struct rfkill_ops ideapad_rfk_ops = {
--
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