Merge branch 'linus' into tracing/core

Merge reason: tracing/core was on a .30-rc1 base and was missing out on
              on a handful of tracing fixes present in .30-rc5-almost.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

8 files changed, 38 insertions, 24 deletions

diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c
index e4728a28f492..ecaeb7e8e75e 100644
--- a/drivers/input/touchscreen/ad7877.c
+++ b/drivers/input/touchscreen/ad7877.c
@@ -736,8 +736,8 @@ static int __devinit ad7877_probe(struct spi_device *spi)
 
 	/* Request AD7877 /DAV GPIO interrupt */
 
-	err = request_irq(spi->irq, ad7877_irq, IRQF_TRIGGER_FALLING |
-			IRQF_SAMPLE_RANDOM, spi->dev.driver->name, ts);
+	err = request_irq(spi->irq, ad7877_irq, IRQF_TRIGGER_FALLING,
+			spi->dev.driver->name, ts);
 	if (err) {
 		dev_dbg(&spi->dev, "irq %d busy?\n", spi->irq);
 		goto err_free_mem;
diff --git a/drivers/input/touchscreen/ad7879.c b/drivers/input/touchscreen/ad7879.c
index ea4c61d68683..5d8a70398807 100644
--- a/drivers/input/touchscreen/ad7879.c
+++ b/drivers/input/touchscreen/ad7879.c
@@ -448,8 +448,7 @@ static int __devinit ad7879_construct(bus_device *bus, struct ad7879 *ts)
 	ad7879_setup(ts);
 
 	err = request_irq(bus->irq, ad7879_irq,
-			  IRQF_TRIGGER_FALLING | IRQF_SAMPLE_RANDOM,
-			  bus->dev.driver->name, ts);
+			  IRQF_TRIGGER_FALLING, bus->dev.driver->name, ts);
 
 	if (err) {
 		dev_err(&bus->dev, "irq %d busy?\n", bus->irq);
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index 056ac77e2cf0..2b01e56568f8 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -127,6 +127,8 @@ struct ads7846 {
 	void			(*filter_cleanup)(void *data);
 	int			(*get_pendown_state)(void);
 	int			gpio_pendown;
+
+	void			(*wait_for_sync)(void);
 };
 
 /* leave chip selected when we're done, for quicker re-select? */
@@ -511,6 +513,10 @@ static int get_pendown_state(struct ads7846 *ts)
 	return !gpio_get_value(ts->gpio_pendown);
 }
 
+static void null_wait_for_sync(void)
+{
+}
+
 /*
  * PENIRQ only kicks the timer.  The timer only reissues the SPI transfer,
  * to retrieve touchscreen status.
@@ -686,6 +692,7 @@ static void ads7846_rx_val(void *ads)
 	default:
 		BUG();
 	}
+	ts->wait_for_sync();
 	status = spi_async(ts->spi, m);
 	if (status)
 		dev_err(&ts->spi->dev, "spi_async --> %d\n",
@@ -723,6 +730,7 @@ static enum hrtimer_restart ads7846_timer(struct hrtimer *handle)
 	} else {
 		/* pen is still down, continue with the measurement */
 		ts->msg_idx = 0;
+		ts->wait_for_sync();
 		status = spi_async(ts->spi, &ts->msg[0]);
 		if (status)
 			dev_err(&ts->spi->dev, "spi_async --> %d\n", status);
@@ -746,7 +754,7 @@ static irqreturn_t ads7846_irq(int irq, void *handle)
 			 * that here.  (The "generic irq" framework may help...)
 			 */
 			ts->irq_disabled = 1;
-			disable_irq(ts->spi->irq);
+			disable_irq_nosync(ts->spi->irq);
 			ts->pending = 1;
 			hrtimer_start(&ts->timer, ktime_set(0, TS_POLL_DELAY),
 					HRTIMER_MODE_REL);
@@ -947,6 +955,8 @@ static int __devinit ads7846_probe(struct spi_device *spi)
 		ts->penirq_recheck_delay_usecs =
 				pdata->penirq_recheck_delay_usecs;
 
+	ts->wait_for_sync = pdata->wait_for_sync ? : null_wait_for_sync;
+
 	snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(&spi->dev));
 
 	input_dev->name = "ADS784x Touchscreen";
diff --git a/drivers/input/touchscreen/da9034-ts.c b/drivers/input/touchscreen/da9034-ts.c
index fa67d782c3c3..3ffd4c4b170c 100644
--- a/drivers/input/touchscreen/da9034-ts.c
+++ b/drivers/input/touchscreen/da9034-ts.c
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2006-2008 Marvell International Ltd.
  *	Fengwei Yin <fengwei.yin@marvell.com>
+ *	Bin Yang  <bin.yang@marvell.com>
  *	Eric Miao <eric.miao@marvell.com>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -175,6 +176,16 @@ static void da9034_event_handler(struct da9034_touch *touch, int event)
 			goto err_reset;
 
 		touch->state = STATE_STOP;
+
+		/* FIXME: PEN_{UP/DOWN} events are expected to be
+		 * available by stopping TSI, but this is found not
+		 * always true, delay and simulate such an event
+		 * here is more reliable
+		 */
+		mdelay(1);
+		da9034_event_handler(touch,
+				     is_pen_down(touch) ? EVENT_PEN_DOWN :
+							  EVENT_PEN_UP);
 		break;
 
 	case STATE_STOP:
@@ -189,8 +200,6 @@ static void da9034_event_handler(struct da9034_touch *touch, int event)
 			report_pen_up(touch);
 			touch->state = STATE_IDLE;
 		}
-
-		input_sync(touch->input_dev);
 		break;
 
 	case STATE_WAIT:
@@ -200,8 +209,10 @@ static void da9034_event_handler(struct da9034_touch *touch, int event)
 		if (is_pen_down(touch)) {
 			start_tsi(touch);
 			touch->state = STATE_BUSY;
-		} else
+		} else {
+			report_pen_up(touch);
 			touch->state = STATE_IDLE;
+		}
 		break;
 	}
 	return;
@@ -226,16 +237,12 @@ static int da9034_touch_notifier(struct notifier_block *nb,
 	struct da9034_touch *touch =
 		container_of(nb, struct da9034_touch, notifier);
 
-	if (event & DA9034_EVENT_PEN_DOWN) {
-		if (is_pen_down(touch))
-			da9034_event_handler(touch, EVENT_PEN_DOWN);
-		else
-			da9034_event_handler(touch, EVENT_PEN_UP);
-	}
-
 	if (event & DA9034_EVENT_TSI_READY)
 		da9034_event_handler(touch, EVENT_TSI_READY);
 
+	if ((event & DA9034_EVENT_PEN_DOWN) && touch->state == STATE_IDLE)
+		da9034_event_handler(touch, EVENT_PEN_DOWN);
+
 	return 0;
 }
 
@@ -385,6 +392,6 @@ static void __exit da9034_touch_exit(void)
 module_exit(da9034_touch_exit);
 
 MODULE_DESCRIPTION("Touchscreen driver for Dialog Semiconductor DA9034");
-MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>");
+MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>, Bin Yang <bin.yang@marvell.com>");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:da9034-touch");
diff --git a/drivers/input/touchscreen/mainstone-wm97xx.c b/drivers/input/touchscreen/mainstone-wm97xx.c
index dfa6a84ab50a..4cc047a5116e 100644
--- a/drivers/input/touchscreen/mainstone-wm97xx.c
+++ b/drivers/input/touchscreen/mainstone-wm97xx.c
@@ -111,13 +111,12 @@ static void wm97xx_acc_pen_up(struct wm97xx *wm)
 #else
 static void wm97xx_acc_pen_up(struct wm97xx *wm)
 {
-	int count = 16;
+	unsigned int count;
+
 	schedule_timeout_uninterruptible(1);
 
-	while (count < 16) {
+	for (count = 0; count < 16; count++)
 		MODR;
-		count--;
-	}
 }
 #endif
 
diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index 4ab070246892..536668fbda22 100644
--- a/drivers/input/touchscreen/tsc2007.c
+++ b/drivers/input/touchscreen/tsc2007.c
@@ -235,7 +235,7 @@ static irqreturn_t tsc2007_irq(int irq, void *handle)
 	spin_lock_irqsave(&ts->lock, flags);
 
 	if (likely(ts->get_pendown_state())) {
-		disable_irq(ts->irq);
+		disable_irq_nosync(ts->irq);
 		hrtimer_start(&ts->timer, ktime_set(0, TS_POLL_DELAY),
 					HRTIMER_MODE_REL);
 	}
diff --git a/drivers/input/touchscreen/ucb1400_ts.c b/drivers/input/touchscreen/ucb1400_ts.c
index e868264fe799..f100c7f4c1db 100644
--- a/drivers/input/touchscreen/ucb1400_ts.c
+++ b/drivers/input/touchscreen/ucb1400_ts.c
@@ -256,7 +256,7 @@ static irqreturn_t ucb1400_hard_irq(int irqnr, void *devid)
 	struct ucb1400_ts *ucb = devid;
 
 	if (irqnr == ucb->irq) {
-		disable_irq(ucb->irq);
+		disable_irq_nosync(ucb->irq);
 		ucb->irq_pending = 1;
 		wake_up(&ucb->ts_wait);
 		return IRQ_HANDLED;
diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c
index cec480bffe38..69af8385ab14 100644
--- a/drivers/input/touchscreen/wm97xx-core.c
+++ b/drivers/input/touchscreen/wm97xx-core.c
@@ -370,8 +370,7 @@ static int wm97xx_init_pen_irq(struct wm97xx *wm)
 	 * provided. */
 	BUG_ON(!wm->mach_ops->irq_enable);
 
-	if (request_irq(wm->pen_irq, wm97xx_pen_interrupt,
-			IRQF_SHARED | IRQF_SAMPLE_RANDOM,
+	if (request_irq(wm->pen_irq, wm97xx_pen_interrupt, IRQF_SHARED,
 			"wm97xx-pen", wm)) {
 		dev_err(wm->dev,
 			"Failed to register pen down interrupt, polling");