[media] rc: sunxi-cir: Initialize the spinlock properly

[ Upstream commit 768acf4 ]

The driver allocates the spinlock but fails to initialize it correctly.
The kernel reports a BUG indicating bad spinlock magic when spinlock
debugging is enabled.

Call spin_lock_init() on it to initialize it correctly.

Fixes: b4e3e59 ("[media] rc: add sunxi-ir driver")

Signed-off-by: Chen-Yu Tsai <[email protected]>
Acked-by: Hans de Goede <[email protected]>
Cc: [email protected]
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

Author: wens

drivers/media/rc/sunxi-cir.c

@@ -153,6 +153,8 @@ static int sunxi_ir_probe(struct platform_device *pdev)
 	if (!ir)
 		return -ENOMEM;
 
+	spin_lock_init(&ir->ir_lock);
+
 	if (of_device_is_compatible(dn, "allwinner,sun5i-a13-ir"))
 		ir->fifo_size = 64;
 	else