[patch 2.6.24-rc4] ads7846 stops updating dev->power.power_state

[David Brownell <david-b@pacbell.net>]

This stops the ads7846 driver from using dev->power.power_state;
that field is deprecated (overdue for removal) and the only reason
to update it was to make the /sys/devices/.../power/state files
(now removed) work better.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

--- pstate.orig/drivers/input/touchscreen/ads7846.c	2007-12-04 09:19:00.000000000 -0800
+++ pstate/drivers/input/touchscreen/ads7846.c	2007-12-04 12:13:11.000000000 -0800
@@ -116,6 +116,7 @@ struct ads7846 {
 // FIXME remove "irq_disabled"
 	unsigned		irq_disabled:1;	/* P: lock */
 	unsigned		disabled:1;
+	unsigned		is_suspended:1;
 
 	int			(*filter)(void *data, int data_idx, int *val);
 	void			*filter_data;
@@ -203,7 +204,7 @@ static void ads7846_disable(struct ads78
 static int device_suspended(struct device *dev)
 {
 	struct ads7846 *ts = dev_get_drvdata(dev);
-	return dev->power.power_state.event != PM_EVENT_ON || ts->disabled;
+	return ts->is_suspended || ts->disabled;
 }
 
 static int ads7846_read12_ser(struct device *dev, unsigned command)
@@ -795,7 +796,7 @@ static int ads7846_suspend(struct spi_de
 
 	spin_lock_irq(&ts->lock);
 
-	spi->dev.power.power_state = message;
+	ts->is_suspended = 1;
 	ads7846_disable(ts);
 
 	spin_unlock_irq(&ts->lock);
@@ -810,7 +811,7 @@ static int ads7846_resume(struct spi_dev
 
 	spin_lock_irq(&ts->lock);
 
-	spi->dev.power.power_state = PMSG_ON;
+	ts->is_suspended = 0;
 	ads7846_enable(ts);
 
 	spin_unlock_irq(&ts->lock);
@@ -872,7 +873,6 @@ static int __devinit ads7846_probe(struc
 	}
 
 	dev_set_drvdata(&spi->dev, ts);
-	spi->dev.power.power_state = PMSG_ON;
 
 	ts->spi = spi;
 	ts->input = input_dev;