diff options
| author | Julia Cartwright <julia@ni.com> | 2017-03-22 01:43:02 +0300 |
|---|---|---|
| committer | Matt Turner <mattst88@gmail.com> | 2017-09-04 22:04:31 +0300 |
| commit | b5a3a128b44219f0802a8b7895e09233853c8b43 (patch) | |
| tree | e706ab2929941997d0f5481c2e8b28568e3615d1 /arch/alpha/include | |
| parent | beb1057feb1d061a0598440c73c4ca4e020c0751 (diff) | |
| download | linux-b5a3a128b44219f0802a8b7895e09233853c8b43.tar.xz | |
alpha: marvel: make use of raw_spinlock variants
The alpha/marvel code currently implements 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: Matt Turner <mattst88@gmail.com>
Diffstat (limited to 'arch/alpha/include')
| -rw-r--r-- | arch/alpha/include/asm/core_marvel.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/alpha/include/asm/core_marvel.h b/arch/alpha/include/asm/core_marvel.h index dad300fa14ce..8dcf9dbda618 100644 --- a/arch/alpha/include/asm/core_marvel.h +++ b/arch/alpha/include/asm/core_marvel.h @@ -312,7 +312,7 @@ struct io7 { io7_port7_csrs *csrs; struct io7_port ports[IO7_NUM_PORTS]; - spinlock_t irq_lock; + raw_spinlock_t irq_lock; }; #ifndef __EXTERN_INLINE |