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authorDavid Brownell <david-b@pacbell.net>2008-04-28 02:11:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 08:58:16 -0700
commitc750090085f260503d8beec1c73c4d2e4fe93628 (patch)
tree6e9b40b453fe55587036d3449c6093b2d83eac36 /drivers/char
parent77459b059b02c16b2c8cbc39b524941a576ad36e (diff)
downloadlinux-c750090085f260503d8beec1c73c4d2e4fe93628.tar.bz2
rtc: avoid legacy drivers with generic framework
Kconfig tweaks to help reduce RTC configuration bugs, by avoiding legacy RTC drivers when the generic RTC framework is enabled: - If rtc-cmos is selected, disable the legacy rtc driver; - When using generic RTC on x86, enable rtc-cmos by default; - In the old "chardev RTC" section of Kconfig, add a comment warning people off these (seven) legacy RTC drivers when the generic framework is in use. People can still use the legacy drivers if they want (or need) to. This doesn't fix the broken dependencies for the legacy "CMOS" RTC driver. Ideally it would be a full list of platforms where it works, not a partial list of ones where it won't. Or better yet, it would depend on a "HAVE_CMOS_RTC" flag defined by various platforms ... surely there's a Kconfig style guideline lurking there. 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>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/Kconfig11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 2906ee7bd298..929d4fa73fd9 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -732,9 +732,16 @@ config NVRAM
To compile this driver as a module, choose M here: the
module will be called nvram.
+#
+# These legacy RTC drivers just cause too many conflicts with the generic
+# RTC framework ... let's not even try to coexist any more.
+#
+if RTC_LIB=n
+
config RTC
tristate "Enhanced Real Time Clock Support"
- depends on !PPC && !PARISC && !IA64 && !M68K && !SPARC && !FRV && !ARM && !SUPERH && !S390 && !AVR32
+ depends on !PPC && !PARISC && !IA64 && !M68K && !SPARC && !FRV \
+ && !ARM && !SUPERH && !S390 && !AVR32
---help---
If you say Y here and create a character special file /dev/rtc with
major number 10 and minor number 135 using mknod ("man mknod"), you
@@ -840,6 +847,8 @@ config DS1302
will get access to the real time clock (or hardware clock) built
into your computer.
+endif # RTC_LIB
+
config COBALT_LCD
bool "Support for Cobalt LCD"
depends on MIPS_COBALT