Input: ucb1400_ts - enable interrupt unconditionally

Sometimes, when using the touchscreen, it stops working till next restart
and the following message is printed:

	ucb1400: unexpected IE_STATUS = 0x0

The following patch retriggers the touchscreen interrupt unconditionally.
This prevents hanging of the touchscreen in case of bogus interrupt
occurence.

Signed-off-by: Pavel Revak <palo@bielyvlk.sk>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/drivers/input/touchscreen/ucb1400_ts.c b/drivers/input/touchscreen/ucb1400_ts.c
index 3b345f9cf0c712cdd67516b9d129d6dd1aa310bf..3a7a58222f836ed5c9aea5022a1196482c7ee355 100644 (file)
--- a/drivers/input/touchscreen/ucb1400_ts.c
+++ b/drivers/input/touchscreen/ucb1400_ts.c
@@ -170,11 +170,11 @@ static void ucb1400_handle_pending_irq(struct ucb1400_ts *ucb)
        ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, isr);
        ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);
 
-       if (isr & UCB_IE_TSPX) {
+       if (isr & UCB_IE_TSPX)
                ucb1400_ts_irq_disable(ucb->ac97);
-               enable_irq(ucb->irq);
-       } else
-               printk(KERN_ERR "ucb1400: unexpected IE_STATUS = %#x\n", isr);
+       else
+               dev_dbg(&ucb->ts_idev->dev, "ucb1400: unexpected IE_STATUS = %#x\n", isr);
+       enable_irq(ucb->irq);
 }
 
 static int ucb1400_ts_thread(void *_ucb)