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pps: kc: fix non-tickless system config dependency 

CONFIG_NO_HZ currently only sets the default value of dynticks config so
if PPS kernel consumer needs periodic timer ticks it should depend on
!CONFIG_NO_HZ_COMMON instead of !CONFIG_NO_HZ.

Otherwise it is possible to enable it even on tickless system which has
CONFIG_NO_HZ not set and CONFIG_NO_HZ_IDLE (or CONFIG_NO_HZ_FULL) set.

Link: http://lkml.kernel.org/r/57E2B769.50202@maciej.szmigiero.name
Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Maciej S. Szmigiero 2016-10-11 13:54:30 -07:00 committed by Linus Torvalds
parent 54c721b857
commit ab47deb6bb
1 changed files with 1 additions and 1 deletions
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2
drivers/pps/Kconfig
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@ -31,7 +31,7 @@ config PPS_DEBUG
config NTP_PPS
bool "PPS kernel consumer support"
depends on !NO_HZ
depends on !NO_HZ_COMMON
help
This option adds support for direct in-kernel time
synchronization using an external PPS signal.