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

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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>
This commit is contained in:
Mark Brown 2011-12-27 17:20:10 +00:00 committed by Samuel Ortiz
parent e3380333b8
commit 953c7d025d
1 changed files with 1 additions and 2 deletions
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3
drivers/mfd/wm831x-irq.c
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@ -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;