From: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Date: Tue, 11 Oct 2016 20:54:30 +0000 (-0700)
Subject: pps: kc: fix non-tickless system config dependency
X-Git-Tag: v4.14-rc1~2289^2~31
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ab47deb6bb03ddf1c1e253bfbbdbf5f867975ca5;p=platform%2Fkernel%2Flinux-rpi.git

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>
---

diff --git a/drivers/pps/Kconfig b/drivers/pps/Kconfig
index 7512e98..564a51a 100644
--- a/drivers/pps/Kconfig
+++ b/drivers/pps/Kconfig
@@ -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.