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authorJulia Cartwright <julia@ni.com>2017-03-09 19:22:04 +0300
committerLinus Walleij <linus.walleij@linaro.org>2017-03-16 18:39:15 +0300
commit229710fecdd805abb753c480778ea0de47cbb1e2 (patch)
tree309c0f9689076fdbe20afb702548750f810bb670 /drivers/pinctrl/pinctrl-amd.h
parentcb96a66243a84f16590ba0a7658d4257267e50df (diff)
downloadlinux-229710fecdd805abb753c480778ea0de47cbb1e2.tar.xz
pinctrl: amd: make use of raw_spinlock variants
The amd pinctrl drivers 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/pinctrl-amd.h')
-rw-r--r--drivers/pinctrl/pinctrl-amd.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pinctrl/pinctrl-amd.h b/drivers/pinctrl/pinctrl-amd.h
index c03f77822069..5b1cb965c767 100644
--- a/drivers/pinctrl/pinctrl-amd.h
+++ b/drivers/pinctrl/pinctrl-amd.h
@@ -87,7 +87,7 @@ struct amd_function {
};
struct amd_gpio {
- spinlock_t lock;
+ raw_spinlock_t lock;
void __iomem *base;
const struct amd_pingroup *groups;