netdev - [PATCH 5/8] rfkill: Remove obsolete "state" sysfs interface

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Message-Id: <1453218163-31998-6-git-send-email-jprvita@endlessm.com>
Date:	Tue, 19 Jan 2016 10:42:40 -0500
From:	"João Paulo Rechi Vita" <jprvita@...il.com>
To:	johannes@...solutions.net
Cc:	marcel@...tmann.org, linux-wireless@...r.kernel.org,
	davem@...emloft.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, jprvita@...lessm.com,
	linux@...lessm.com
Subject: [PATCH 5/8] rfkill: Remove obsolete "state" sysfs interface

This was schedule to be removed in 2014 by:

 commit 69c86373c6ea1149aa559e6088362d58d8ec8835
 Author: florian@...kler.org <florian@...kler.org>
 Date:   Wed Feb 24 12:05:16 2010 +0100

     Document the rfkill sysfs ABI

     This moves sysfs ABI info from Documentation/rfkill.txt to the
     ABI subfolder and reformats it.

     This also schedules the deprecated sysfs parts to be removed in
     2012 (claim file) and 2014 (state file).

     Signed-off-by: Florian Mickler <florian@...kler.org>
     Signed-off-by: John W. Linville <linville@...driver.com>

Signed-off-by: João Paulo Rechi Vita <jprvita@...lessm.com>
---
 Documentation/ABI/obsolete/sysfs-class-rfkill | 20 ---------------
 Documentation/ABI/removed/sysfs-class-rfkill  | 17 +++++++++++++
 net/rfkill/core.c                             | 35 ---------------------------
 3 files changed, 17 insertions(+), 55 deletions(-)
 delete mode 100644 Documentation/ABI/obsolete/sysfs-class-rfkill

diff --git a/Documentation/ABI/obsolete/sysfs-class-rfkill b/Documentation/ABI/obsolete/sysfs-class-rfkill
deleted file mode 100644
index e736d14..0000000
--- a/Documentation/ABI/obsolete/sysfs-class-rfkill
+++ /dev/null
@@ -1,20 +0,0 @@
-rfkill - radio frequency (RF) connector kill switch support
-
-For details to this subsystem look at Documentation/rfkill.txt.
-
-What:		/sys/class/rfkill/rfkill[0-9]+/state
-Date:		09-Jul-2007
-KernelVersion	v2.6.22
-Contact:	linux-wireless@...r.kernel.org
-Description: 	Current state of the transmitter.
-		This file is deprecated and scheduled to be removed in 2014,
-		because its not possible to express the 'soft and hard block'
-		state of the rfkill driver.
-Values: 	A numeric value.
-		0: RFKILL_STATE_SOFT_BLOCKED
-			transmitter is turned off by software
-		1: RFKILL_STATE_UNBLOCKED
-			transmitter is (potentially) active
-		2: RFKILL_STATE_HARD_BLOCKED
-			transmitter is forced off by something outside of
-			the driver's control.
diff --git a/Documentation/ABI/removed/sysfs-class-rfkill b/Documentation/ABI/removed/sysfs-class-rfkill
index 3ce6231..1b93139 100644
--- a/Documentation/ABI/removed/sysfs-class-rfkill
+++ b/Documentation/ABI/removed/sysfs-class-rfkill
@@ -11,3 +11,20 @@ Description:	This file was deprecated because there no longer was a way to
 		This file was scheduled to be removed in 2012, and was removed
 		in 2016.
 Values: 	0: Kernel handles events
+
+What:		/sys/class/rfkill/rfkill[0-9]+/state
+Date:		09-Jul-2007
+KernelVersion	v2.6.22
+Contact:	linux-wireless@...r.kernel.org
+Description: 	Current state of the transmitter.
+		This file was deprecated and scheduled to be removed in 2014,
+		because it was not possible to express the 'soft and hard block'
+		state of the rfkill driver. It was removed in 2016.
+Values: 	A numeric value.
+		0: RFKILL_STATE_SOFT_BLOCKED
+			transmitter is turned off by software
+		1: RFKILL_STATE_UNBLOCKED
+			transmitter is (potentially) active
+		2: RFKILL_STATE_HARD_BLOCKED
+			transmitter is forced off by something outside of
+			the driver's control.
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index a05d1f1..26da4f0 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -683,46 +683,11 @@ static u8 user_state_from_blocked(unsigned long state)
 	return RFKILL_USER_STATE_UNBLOCKED;
 }
 
-static ssize_t state_show(struct device *dev, struct device_attribute *attr,
-			  char *buf)
-{
-	struct rfkill *rfkill = to_rfkill(dev);
-
-	return sprintf(buf, "%d\n", user_state_from_blocked(rfkill->state));
-}
-
-static ssize_t state_store(struct device *dev, struct device_attribute *attr,
-			   const char *buf, size_t count)
-{
-	struct rfkill *rfkill = to_rfkill(dev);
-	unsigned long state;
-	int err;
-
-	if (!capable(CAP_NET_ADMIN))
-		return -EPERM;
-
-	err = kstrtoul(buf, 0, &state);
-	if (err)
-		return err;
-
-	if (state != RFKILL_USER_STATE_SOFT_BLOCKED &&
-	    state != RFKILL_USER_STATE_UNBLOCKED)
-		return -EINVAL;
-
-	mutex_lock(&rfkill_global_mutex);
-	rfkill_set_block(rfkill, state == RFKILL_USER_STATE_SOFT_BLOCKED);
-	mutex_unlock(&rfkill_global_mutex);
-
-	return count;
-}
-static DEVICE_ATTR_RW(state);
-
 static struct attribute *rfkill_dev_attrs[] = {
 	&dev_attr_name.attr,
 	&dev_attr_type.attr,
 	&dev_attr_index.attr,
 	&dev_attr_persistent.attr,
-	&dev_attr_state.attr,
 	&dev_attr_soft.attr,
 	&dev_attr_hard.attr,
 	NULL,
-- 
2.5.0