[PATCH 4.13 36/36] irqchip/irq-mvebu-gicp: Add missing spin_lock init

[Greg Kroah-Hartman]

4.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Antoine Tenart <antoine.tenart@xxxxxxxxxxxxxxxxxx>

commit c9bb86338a6bb91e4d32db04feb6b8d423e04d06 upstream.

A spin lock is used in the irq-mvebu-gicp driver, but it is never
initialized. This patch adds the missing spin_lock_init() call in the
driver's probe function.

Fixes: a68a63cb4dfc ("irqchip/irq-mvebu-gicp: Add new driver for Marvell GICP")
Signed-off-by: Antoine Tenart <antoine.tenart@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: gregory.clement@xxxxxxxxxxxxxxxxxx
Acked-by: marc.zyngier@xxxxxxx
Cc: thomas.petazzoni@xxxxxxxxxxxxxxxxxx
Cc: andrew@xxxxxxx
Cc: jason@xxxxxxxxxxxxxx
Cc: nadavh@xxxxxxxxxxx
Cc: miquel.raynal@xxxxxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: sebastian.hesselbarth@xxxxxxxxx
Link: https://lkml.kernel.org/r/20171025072326.21030-1-antoine.tenart@xxxxxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/irqchip/irq-mvebu-gicp.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/irqchip/irq-mvebu-gicp.c
+++ b/drivers/irqchip/irq-mvebu-gicp.c
@@ -194,6 +194,7 @@ static int mvebu_gicp_probe(struct platf
 		return -ENOMEM;
 
 	gicp->dev = &pdev->dev;
+	spin_lock_init(&gicp->spi_lock);
 
 	gicp->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!gicp->res)