diff options
| -rw-r--r-- | drivers/input/touchscreen/wm97xx-core.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c index 2910999e05a0..e27b1e060b33 100644 --- a/drivers/input/touchscreen/wm97xx-core.c +++ b/drivers/input/touchscreen/wm97xx-core.c @@ -328,18 +328,18 @@ static void wm97xx_pen_irq_worker(struct work_struct *work) * * We have to disable the codec interrupt in the handler because it * can take upto 1ms to clear the interrupt source. We schedule a task - * in a work queue to do the actual interaction with the chip (it - * doesn't matter if we end up reenqueing it before it is executed - * since we don't touch the chip until it has run). The interrupt is - * then enabled again in the slow handler when the source has been - * cleared. + * in a work queue to do the actual interaction with the chip. The + * interrupt is then enabled again in the slow handler when the source + * has been cleared. */ static irqreturn_t wm97xx_pen_interrupt(int irq, void *dev_id) { struct wm97xx *wm = dev_id; - wm->mach_ops->irq_enable(wm, 0); - queue_work(wm->ts_workq, &wm->pen_event_work); + if (!work_pending(&wm->pen_event_work)) { + wm->mach_ops->irq_enable(wm, 0); + queue_work(wm->ts_workq, &wm->pen_event_work); + } return IRQ_HANDLED; } |