irqchip/irq-imx-gpcv2: Fix spinlock initialization

commit 75eb5e1 upstream.

The raw_spinlock in the IMX GPCV2 interupt chip is not initialized before
usage. That results in a lockdep splat:

  INFO: trying to register non-static key.
  the code is fine but needs lockdep annotation.
  turning off the locking correctness validator.

Add the missing raw_spin_lock_init() to the setup code.

Fixes: e324c4d ("irqchip/imx-gpcv2: IMX GPCv2 driver for wakeup sources")
Signed-off-by: Tyler Baker <[email protected]>
Reviewed-by: Fabio Estevam <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: http:https://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

drivers/irqchip/irq-imx-gpcv2.c

@@ -230,6 +230,8 @@ static int __init imx_gpcv2_irqchip_init(struct device_node *node,
  return -ENOMEM;
  }
 
+ raw_spin_lock_init(&cd->rlock);
+
  cd->gpc_base = of_iomap(node, 0);
  if (!cd->gpc_base) {
  pr_err("fsl-gpcv2: unable to map gpc registers\n");