diff options
author | Gary S. Robertson <gary.robertson@linaro.org> | 2016-01-20 15:36:59 -0600 |
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committer | Gary S. Robertson <gary.robertson@linaro.org> | 2016-01-20 15:36:59 -0600 |
commit | 370e05d463d66eaada3b4bb9266f019563920eb0 (patch) | |
tree | 348834a36436338eea1e9f17f1823cae213f92fc /arch/powerpc/kernel/rtas.c | |
parent | f93328edc6d139b9b1b5ed6944f7b80b8699cdf7 (diff) | |
parent | 906d9eadd3b6698fa6ceb9bcdf41da6aa56d0a24 (diff) |
Merge tag 'lsk-v4.1-15.12-rt' of http://git.linaro.org/kernel/linux-linaro-stable into linux-linaro-lng-v4.1-rtlinux-lng-preempt-rt-4.1.14-2016.03linux-lng-preempt-rt-4.1.14-2016.02linux-lng-preempt-rt-4.1.14-2016.01linux-linaro-lng-v4.1-rt
LSK RT 15.12 v4.1
Conflicts:
linaro/configs/linaro-base.conf
linaro/configs/preempt-rt.conf
linaro/configs/vexpress64.conf
Diffstat (limited to 'arch/powerpc/kernel/rtas.c')
-rw-r--r-- | arch/powerpc/kernel/rtas.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 7a488c108410..5607693f35cf 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -584,6 +584,23 @@ int rtas_get_sensor(int sensor, int index, int *state) } EXPORT_SYMBOL(rtas_get_sensor); +int rtas_get_sensor_fast(int sensor, int index, int *state) +{ + int token = rtas_token("get-sensor-state"); + int rc; + + if (token == RTAS_UNKNOWN_SERVICE) + return -ENOENT; + + rc = rtas_call(token, 2, 2, state, sensor, index); + WARN_ON(rc == RTAS_BUSY || (rc >= RTAS_EXTENDED_DELAY_MIN && + rc <= RTAS_EXTENDED_DELAY_MAX)); + + if (rc < 0) + return rtas_error_rc(rc); + return rc; +} + bool rtas_indicator_present(int token, int *maxindex) { int proplen, count, i; @@ -1024,6 +1041,9 @@ asmlinkage int ppc_rtas(struct rtas_args __user *uargs) if (!capable(CAP_SYS_ADMIN)) return -EPERM; + if (!rtas.entry) + return -EINVAL; + if (copy_from_user(&args, uargs, 3 * sizeof(u32)) != 0) return -EFAULT; |