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| author | Julia Cartwright <julia@ni.com> | 2017-03-09 19:22:04 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-03-16 18:39:15 +0300 |
| commit | 229710fecdd805abb753c480778ea0de47cbb1e2 (patch) | |
| tree | 309c0f9689076fdbe20afb702548750f810bb670 /drivers/pinctrl/pinctrl-amd.h | |
| parent | cb96a66243a84f16590ba0a7658d4257267e50df (diff) | |
| download | linux-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.h | 2 |
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; |