Commit 953c7d02 authored Dec 27, 2011 by Mark Brown Committed by Samuel Ortiz Jan 09, 2012

mfd: Still check other interrupts if we get a wm831x touchscreen IRQ

It is possible that we will see another interrupt triggering at the same
time as the touchscreen interrupts so it's still worth checking other
possible sources. Almost all of the win from the fast path comes from only
needing to read the primary register and saving the I/O costs.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

parent e3380333

drivers/mfd/wm831x-irq.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -472,8 +472,7 @@ static irqreturn_t wm831x_irq_thread(int irq, void *data)
		handle_nested_irq(wm831x->irq_base + WM831X_IRQ_TCHPD);
		if (primary & WM831X_TCHDATA_INT)
		handle_nested_irq(wm831x->irq_base + WM831X_IRQ_TCHDATA);
		if (primary & (WM831X_TCHDATA_EINT \| WM831X_TCHPD_EINT))
		goto out;
		primary &= ~(WM831X_TCHDATA_EINT \| WM831X_TCHPD_EINT);

		for (i = 0; i < ARRAY_SIZE(wm831x_irqs); i++) {
		int offset = wm831x_irqs[i].reg - 1;

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