Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-linus-1

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6: (9356 commits)
  [media] rc: update for bitop name changes
  fs: simplify iget & friends
  fs: pull inode->i_lock up out of writeback_single_inode
  fs: rename inode_lock to inode_hash_lock
  fs: move i_wb_list out from under inode_lock
  fs: move i_sb_list out from under inode_lock
  fs: remove inode_lock from iput_final and prune_icache
  fs: Lock the inode LRU list separately
  fs: factor inode disposal
  fs: protect inode->i_state with inode->i_lock
  lib, arch: add filter argument to show_mem and fix private implementations
  SLUB: Write to per cpu data when allocating it
  slub: Fix debugobjects with lockless fastpath
  autofs4: Do not potentially dereference NULL pointer returned by fget() in autofs_dev_ioctl_setpipefd()
  autofs4 - remove autofs4_lock
  autofs4 - fix d_manage() return on rcu-walk
  autofs4 - fix autofs4_expire_indirect() traversal
  autofs4 - fix dentry leak in autofs4_expire_direct()
  autofs4 - reinstate last used update on access
  vfs - check non-mountpoint dentry might block in __follow_mount_rcu()
  ...

NOTE!

This merge commit was created to fix compilation error. The block
tree was merged upstream and removed the 'elv_queue_empty()'
function which the new 'mtdswap' driver is using. So a simple
merge of the mtd tree with upstream does not compile. And the
mtd tree has already be published, so re-basing it is not an option.

To fix this unfortunate situation, I had to merge upstream into the
mtd-2.6.git tree without committing, put the fixup patch on top of
this, and then commit this. The result is that we do not have commits
which do not compile.

In other words, this merge commit "merges" 3 things: the MTD tree, the
upstream tree, and the fixup patch.

1 files changed, 56 insertions, 1 deletions

diff --git a/drivers/input/keyboard/mcs_touchkey.c b/drivers/input/keyboard/mcs_touchkey.c
index 63b849d7e90b..af1aab324a4c 100644
--- a/drivers/input/keyboard/mcs_touchkey.c
+++ b/drivers/input/keyboard/mcs_touchkey.c
@@ -1,5 +1,5 @@
 /*
- * mcs_touchkey.c - Touchkey driver for MELFAS MCS5000/5080 controller
+ * Touchkey driver for MELFAS MCS5000/5080 controller
  *
  * Copyright (C) 2010 Samsung Electronics Co.Ltd
  * Author: HeungJun Kim <riverful.kim@samsung.com>
@@ -19,6 +19,7 @@
 #include <linux/input.h>
 #include <linux/irq.h>
 #include <linux/slab.h>
+#include <linux/pm.h>
 
 /* MCS5000 Touchkey */
 #define MCS5000_TOUCHKEY_STATUS		0x04
@@ -45,6 +46,8 @@ struct mcs_touchkey_chip {
 };
 
 struct mcs_touchkey_data {
+	void (*poweron)(bool);
+
 	struct i2c_client *client;
 	struct input_dev *input_dev;
 	struct mcs_touchkey_chip chip;
@@ -169,6 +172,11 @@ static int __devinit mcs_touchkey_probe(struct i2c_client *client,
 	if (pdata->cfg_pin)
 		pdata->cfg_pin();
 
+	if (pdata->poweron) {
+		data->poweron = pdata->poweron;
+		data->poweron(true);
+	}
+
 	error = request_threaded_irq(client->irq, NULL, mcs_touchkey_interrupt,
 			IRQF_TRIGGER_FALLING, client->dev.driver->name, data);
 	if (error) {
@@ -196,12 +204,57 @@ static int __devexit mcs_touchkey_remove(struct i2c_client *client)
 	struct mcs_touchkey_data *data = i2c_get_clientdata(client);
 
 	free_irq(client->irq, data);
+	if (data->poweron)
+		data->poweron(false);
 	input_unregister_device(data->input_dev);
 	kfree(data);
 
 	return 0;
 }
 
+static void mcs_touchkey_shutdown(struct i2c_client *client)
+{
+	struct mcs_touchkey_data *data = i2c_get_clientdata(client);
+
+	if (data->poweron)
+		data->poweron(false);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int mcs_touchkey_suspend(struct device *dev)
+{
+	struct mcs_touchkey_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+
+	/* Disable the work */
+	disable_irq(client->irq);
+
+	/* Finally turn off the power */
+	if (data->poweron)
+		data->poweron(false);
+
+	return 0;
+}
+
+static int mcs_touchkey_resume(struct device *dev)
+{
+	struct mcs_touchkey_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+
+	/* Enable the device first */
+	if (data->poweron)
+		data->poweron(true);
+
+	/* Enable irq again */
+	enable_irq(client->irq);
+
+	return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(mcs_touchkey_pm_ops,
+			 mcs_touchkey_suspend, mcs_touchkey_resume);
+
 static const struct i2c_device_id mcs_touchkey_id[] = {
 	{ "mcs5000_touchkey", MCS5000_TOUCHKEY },
 	{ "mcs5080_touchkey", MCS5080_TOUCHKEY },
@@ -213,9 +266,11 @@ static struct i2c_driver mcs_touchkey_driver = {
 	.driver = {
 		.name	= "mcs_touchkey",
 		.owner	= THIS_MODULE,
+		.pm	= &mcs_touchkey_pm_ops,
 	},
 	.probe		= mcs_touchkey_probe,
 	.remove		= __devexit_p(mcs_touchkey_remove),
+	.shutdown       = mcs_touchkey_shutdown,
 	.id_table	= mcs_touchkey_id,
 };