[PATCH] PPS: Use surrounding "if PPS" to remove numerous dependency checks

From: "Robert P. J. Day" <rpjday@crashcourse.ca>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Rodolfo Giometti <giometti@enneenne.com>, akpm@linux-foundation.org
Subject: [PATCH] PPS: Use surrounding "if PPS" to remove numerous dependency checks
Date: Sat, 26 Aug 2017 10:55:22 -0400 (EDT)	[thread overview]
Message-ID: <alpine.LFD.2.20.1708261050500.8156@localhost.localdomain> (raw)


Adding high-level "if PPS" makes lower-level dependency tests
superfluous.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>

---

  since this actually changed functional code, i wanted to submit it
separately. seems to be equivalent, unless i screwed something up.

diff --git a/drivers/pps/Kconfig b/drivers/pps/Kconfig
index 4b29a71..c6008f2 100644
--- a/drivers/pps/Kconfig
+++ b/drivers/pps/Kconfig
@@ -19,9 +19,10 @@ menuconfig PPS
 	  To compile this driver as a module, choose M here: the module
 	  will be called pps_core.ko.

+if PPS
+
 config PPS_DEBUG
 	bool "PPS debugging messages"
-	depends on PPS
 	help
 	  Say Y here if you want the PPS support to produce a bunch of debug
 	  messages to the system log.  Select this if you are having a
@@ -29,7 +30,7 @@ config PPS_DEBUG

 config NTP_PPS
 	bool "PPS kernel consumer support"
-	depends on PPS && !NO_HZ_COMMON
+	depends on !NO_HZ_COMMON
 	help
 	  This option adds support for direct in-kernel time
 	  synchronization using an external PPS signal.
@@ -39,3 +40,5 @@ config NTP_PPS
 source drivers/pps/clients/Kconfig

 source drivers/pps/generators/Kconfig
+
+endif # PPS
diff --git a/drivers/pps/clients/Kconfig b/drivers/pps/clients/Kconfig
index efec021..7f02a9b 100644
--- a/drivers/pps/clients/Kconfig
+++ b/drivers/pps/clients/Kconfig
@@ -3,11 +3,9 @@
 #

 comment "PPS clients support"
-	depends on PPS

 config PPS_CLIENT_KTIMER
 	tristate "Kernel timer client (Testing client, use for debug)"
-	depends on PPS
 	help
 	  If you say yes here you get support for a PPS debugging client
 	  which uses a kernel timer to generate the PPS signal.
@@ -17,21 +15,20 @@ config PPS_CLIENT_KTIMER

 config PPS_CLIENT_LDISC
 	tristate "PPS line discipline"
-	depends on PPS && TTY
+	depends on TTY
 	help
 	  If you say yes here you get support for a PPS source connected
 	  with the CD (Carrier Detect) pin of your serial port.

 config PPS_CLIENT_PARPORT
 	tristate "Parallel port PPS client"
-	depends on PPS && PARPORT
+	depends on PARPORT
 	help
 	  If you say yes here you get support for a PPS source connected
 	  with the interrupt pin of your parallel port.

 config PPS_CLIENT_GPIO
 	tristate "PPS client using GPIO"
-	depends on PPS
 	help
 	  If you say yes here you get support for a PPS source using
 	  GPIO. To be useful you must also register a platform device
diff --git a/drivers/pps/generators/Kconfig b/drivers/pps/generators/Kconfig
index 86b5937..e4c4f3d 100644
--- a/drivers/pps/generators/Kconfig
+++ b/drivers/pps/generators/Kconfig
@@ -3,11 +3,10 @@
 #

 comment "PPS generators support"
-	depends on PPS

 config PPS_GENERATOR_PARPORT
 	tristate "Parallel port PPS signal generator"
-	depends on PPS && PARPORT && BROKEN
+	depends on PARPORT && BROKEN
 	help
 	  If you say yes here you get support for a PPS signal generator which
 	  utilizes STROBE pin of a parallel port to send PPS signals. It uses



-- 

========================================================================
Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
LinkedIn:                               http://ca.linkedin.com/in/rpjday
========================================================================
