mfd: jz4740-adc: Init mask cache in generic IRQ chip

The mask cache must be initialised in the generic IRQ chip,
otherwise enabling one channel will actually enable all
channels when the empty mask cache is written.

Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/jz4740-adc.c b/drivers/mfd/jz4740-adc.c
index 408291ce8af2fad6b7d51e3fcd27753ce7ef10ec..5bb49f08955d03dc4e646d17c1f8e4f026a18170 100644 (file)
--- a/drivers/mfd/jz4740-adc.c
+++ b/drivers/mfd/jz4740-adc.c
@@ -273,7 +273,8 @@ static int jz4740_adc_probe(struct platform_device *pdev)
        ct->chip.irq_unmask = irq_gc_mask_clr_bit;
        ct->chip.irq_ack = irq_gc_ack_set_bit;
 
-       irq_setup_generic_chip(gc, IRQ_MSK(5), 0, 0, IRQ_NOPROBE | IRQ_LEVEL);
+       irq_setup_generic_chip(gc, IRQ_MSK(5), IRQ_GC_INIT_MASK_CACHE, 0,
+                               IRQ_NOPROBE | IRQ_LEVEL);
 
        adc->gc = gc;