Retrieve the number of reserved locks for OMAP by using the
of_hwspin_lock_get_num_reserved_locks() OF helper function
provided by the hwspinlock core. The range sanity check will
be performed by the hwspinlock core during the registration.

Signed-off-by: Suman Anna <s-a...@ti.com>
---
 drivers/hwspinlock/omap_hwspinlock.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/hwspinlock/omap_hwspinlock.c 
b/drivers/hwspinlock/omap_hwspinlock.c
index 1d0c78e..0dad783 100644
--- a/drivers/hwspinlock/omap_hwspinlock.c
+++ b/drivers/hwspinlock/omap_hwspinlock.c
@@ -143,6 +143,12 @@ static int omap_hwspinlock_probe(struct platform_device 
*pdev)
        for (i = 0, hwlock = &bank->lock[0]; i < num_locks; i++, hwlock++)
                hwlock->priv = io_base + LOCK_BASE_OFFSET + sizeof(u32) * i;
 
+       reserved_locks = of_hwspin_lock_get_num_reserved_locks(node);
+       if (reserved_locks < 0) {
+               ret = -EINVAL;
+               goto iounmap_base;
+       }
+
        ret = hwspin_lock_register(bank, &pdev->dev, &omap_hwspinlock_ops,
                                        base_id, num_locks, reserved_locks);
        if (ret)
-- 
1.9.2

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