diff options
| author | Julia Cartwright <julia@ni.com> | 2017-03-09 10:22:06 -0600 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-03-16 16:39:16 +0100 |
| commit | f658ed3642cd1872c536c820597b85a9da2ddded (patch) | |
| tree | 0e82f0356fdd49411d984cf092fd36c5062b3d64 /drivers/pinctrl/sunxi/pinctrl-sunxi.h | |
| parent | 82e529c1c7befe82fc7fc258b956e973056c20bb (diff) | |
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 <julia@ni.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/sunxi/pinctrl-sunxi.h')
| -rw-r--r-- | drivers/pinctrl/sunxi/pinctrl-sunxi.h | 2 |
1 files changed, 1 insertions, 1 deletions
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; }; |