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authorKim, Milo <Milo.Kim@ti.com>2012-10-04 17:13:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-06 03:05:01 +0900
commit92589c986b3360ce15d239fd5113a856412a0b3f (patch)
tree8d15272df2c445c6ccbb7b1cd79847cf89b8d94d /drivers/rtc/Kconfig
parent5fa44f86910ca9ee477cbd944c18f9349cdca30d (diff)
downloadlinux-92589c986b3360ce15d239fd5113a856412a0b3f.tar.gz
rtc-proc: permit the /proc/driver/rtc device to use other devices
To get time information via /proc/driver/rtc, only the first device (rtc0)
is used.  If the rtcN (eg.  rtc1 or rtc2) is used for the system clock,
there is no way to get information of rtcN via /proc/driver/rtc.  With
this patch, the time data can be retrieved from the system clock RTC.

If the RTC_HCTOSYS_DEVICE is not defined, then rtc0 is used by default.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rtc/Kconfig')
-rw-r--r--drivers/rtc/Kconfig10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index fabc99a75c65..a4a805c273bb 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -69,13 +69,15 @@ config RTC_INTF_SYSFS
 	  If unsure, say Y.
 
 config RTC_INTF_PROC
-	boolean "/proc/driver/rtc (procfs for rtc0)"
+	boolean "/proc/driver/rtc (procfs for rtcN)"
 	depends on PROC_FS
 	default RTC_CLASS
 	help
-	  Say yes here if you want to use your first RTC through the proc
-	  interface, /proc/driver/rtc. Other RTCs will not be available
-	  through that API.
+	  Say yes here if you want to use your system clock RTC through
+	  the proc interface, /proc/driver/rtc.
+	  Other RTCs will not be available through that API.
+	  If there is no RTC for the system clock, then the first RTC(rtc0)
+	  is used by default.
 
 	  If unsure, say Y.