From f658ed3642cd1872c536c820597b85a9da2ddded Mon Sep 17 00:00:00 2001 From: Julia Cartwright Date: Thu, 9 Mar 2017 10:22:06 -0600 Subject: pinctrl: sunxi: make use of raw_spinlock variants The sunxi pinctrl driver currently implement an irq_chip for handling interrupts; due to how irq_chip handling is done, it's necessary for the irq_chip methods to be invoked from hardirq context, even on a a real-time kernel. Because the spinlock_t type becomes a "sleeping" spinlock w/ RT kernels, it is not suitable to be used with irq_chips. A quick audit of the operations under the lock reveal that they do only minimal, bounded work, and are therefore safe to do under a raw spinlock. Signed-off-by: Julia Cartwright Signed-off-by: Linus Walleij --- drivers/pinctrl/sunxi/pinctrl-sunxi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/pinctrl/sunxi/pinctrl-sunxi.h') diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.h b/drivers/pinctrl/sunxi/pinctrl-sunxi.h index e1aedd260b2e..a9d315a1256c 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sunxi.h +++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.h @@ -134,7 +134,7 @@ struct sunxi_pinctrl { unsigned ngroups; int *irq; unsigned *irq_array; - spinlock_t lock; + raw_spinlock_t lock; struct pinctrl_dev *pctl_dev; unsigned long variant; }; -- cgit v1.2.3