[4.9,41/69] irqchip/irq-imx-gpcv2: Fix spinlock initialization

Commit Message

Greg Kroah-Hartman April 19, 2017, 2:42 p.m. UTC

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

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

From: Tyler Baker <[e-mail]>

commit 75eb5e1e7b4edbc8e8f930de59004d21cb46961f 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: e324c4dc4a59 ("irqchip/imx-gpcv2: IMX GPCv2 driver for wakeup sources")
Signed-off-by: Tyler Baker <[e-mail]>
Reviewed-by: Fabio Estevam <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Thomas Gleixner <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

---
 drivers/irqchip/irq-imx-gpcv2.c |    2 ++
 1 file changed, 2 insertions(+)

Patch

--- a/drivers/irqchip/irq-imx-gpcv2.c
+++ b/drivers/irqchip/irq-imx-gpcv2.c
@@ -230,6 +230,8 @@  static int __init imx_gpcv2_irqchip_init
 		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");