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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 <dbrownell@users.sourceforge.net>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Brownell 2007-07-21 04:37:56 -07:00 committed by Linus Torvalds
parent ef154ec69c
commit 55ff1aba94
1 changed files with 3 additions and 0 deletions
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drivers/rtc/Kconfig
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@ -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).