The patch below does not apply to the 3.10-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

>From 7b119fd1bdc59a8060df5b659b9f7a70e0169fd6 Mon Sep 17 00:00:00 2001
From: Sebastian Hesselbarth <[email protected]>
Date: Thu, 23 Jan 2014 23:38:04 +0100
Subject: [PATCH] irqchip: orion: clear bridge cause register on init

It is good practice to mask and clear pending irqs on init. We already
mask all irqs, so also clear the bridge irq cause register.

Signed-off-by: Sebastian Hesselbarth <[email protected]>
Tested-by: Ezequiel Garcia <[email protected]>
Cc: <[email protected]> # v3.10+
Signed-off-by: Jason Cooper <[email protected]>

diff --git a/drivers/irqchip/irq-orion.c b/drivers/irqchip/irq-orion.c
index e51d40031884..4137c3d15284 100644
--- a/drivers/irqchip/irq-orion.c
+++ b/drivers/irqchip/irq-orion.c
@@ -180,8 +180,9 @@ static int __init orion_bridge_irq_init(struct device_node 
*np,
        gc->chip_types[0].chip.irq_mask = irq_gc_mask_clr_bit;
        gc->chip_types[0].chip.irq_unmask = irq_gc_mask_set_bit;
 
-       /* mask all interrupts */
+       /* mask and clear all interrupts */
        writel(0, gc->reg_base + ORION_BRIDGE_IRQ_MASK);
+       writel(0, gc->reg_base + ORION_BRIDGE_IRQ_CAUSE);
 
        irq_set_handler_data(irq, domain);
        irq_set_chained_handler(irq, orion_bridge_irq_handler);

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