From 55ff1aba940ff46d4f6d4fd790ea3e1a47aaa84f Mon Sep 17 00:00:00 2001 From: David Brownell Date: Sat, 21 Jul 2007 04:37:56 -0700 Subject: [PATCH] rtc kconfig: point out need for static linkage Various people have expressed surprise that their modular RTC drivers don't seem to work for initializing the system time at boot. To help avoid such unpleasantness, make the Kconfig text point out that the driver probably needs to be statically linked. Signed-off-by: David Brownell Acked-by: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/Kconfig | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 35f34665e3..505f512ac2 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -38,6 +38,9 @@ config RTC_HCTOSYS_DEVICE clock, usually rtc0. Initialization is done when the system starts up, and when it resumes from a low power state. + The driver for this RTC device must be loaded before late_initcall + functions run, so it must usually be statically linked. + This clock should be battery-backed, so that it reads the correct time when the system boots from a power-off state. Otherwise, your system will need an external clock source (like an NTP server). -- 2.39.5