[added to the 4.1 stable tree] irqchip/crossbar: Fix incorrect type of register size

[Sasha Levin <Alexander.Levin@xxxxxxxxxxxxx>]

From: Franck Demathieu <fdemathieu@xxxxxxxxx>

This patch has been added to the  stable tree. If you have any
objections, please let us know.

===============

[ Upstream commit 4b9de5da7e120c7f02395da729f0ec77ce7a6044 ]

The 'size' variable is unsigned according to the dt-bindings.
As this variable is used as integer in other places, create a new variable
that allows to fix the following sparse issue (-Wtypesign):

  drivers/irqchip/irq-crossbar.c:279:52: warning: incorrect type in argument 3 (different signedness)
  drivers/irqchip/irq-crossbar.c:279:52:    expected unsigned int [usertype] *out_value
  drivers/irqchip/irq-crossbar.c:279:52:    got int *<noident>

Signed-off-by: Franck Demathieu <fdemathieu@xxxxxxxxx>
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
 drivers/irqchip/irq-crossbar.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c
index 2f7dffaae93a..5ba30449ee53 100644
--- a/drivers/irqchip/irq-crossbar.c
+++ b/drivers/irqchip/irq-crossbar.c
@@ -194,7 +194,7 @@ static const struct irq_domain_ops crossbar_domain_ops = {
 static int __init crossbar_of_init(struct device_node *node)
 {
 	int i, size, reserved = 0;
-	u32 max = 0, entry;
+	u32 max = 0, entry, reg_size;
 	const __be32 *irqsr;
 	int ret = -ENOMEM;
 
@@ -271,9 +271,9 @@ static int __init crossbar_of_init(struct device_node *node)
 	if (!cb->register_offsets)
 		goto err_irq_map;
 
-	of_property_read_u32(node, "ti,reg-size", &size);
+	of_property_read_u32(node, "ti,reg-size", &reg_size);
 
-	switch (size) {
+	switch (reg_size) {
 	case 1:
 		cb->write = crossbar_writeb;
 		break;
@@ -299,7 +299,7 @@ static int __init crossbar_of_init(struct device_node *node)
 			continue;
 
 		cb->register_offsets[i] = reserved;
-		reserved += size;
+		reserved += reg_size;
 	}
 
 	of_property_read_u32(node, "ti,irqs-safe-map", &cb->safe_map);
-- 
2.11.0