linux-kernel - [PATCH] mfd: jz4740-adc: Init mask cache in generic IRQ chip

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Date:	Thu, 20 Aug 2015 11:30:32 +0100
From:	Matt Redfearn <matt.redfearn@...tec.com>
To:	<lee.jones@...aro.org>, <sameo@...ux.intel.com>, <lars@...afoo.de>
CC:	<linux-kernel@...r.kernel.org>, <matt.redfearn@...tec.com>
Subject: [PATCH] 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@...tec.com>
---
 drivers/mfd/jz4740-adc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/jz4740-adc.c b/drivers/mfd/jz4740-adc.c
index ae2ad8ad0e2f..e8699c0cdae6 100644
--- a/drivers/mfd/jz4740-adc.c
+++ b/drivers/mfd/jz4740-adc.c
@@ -276,7 +276,8 @@ 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;
 
-- 
2.1.4

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