john stultz 74b1760772 timekeeping: Prevent oops when GENERIC_TIME=n ...

commit ad6759fbf3 upstream.

Aaro Koskinen reported an issue in kernel.org bugzilla #15366, where
on non-GENERIC_TIME systems, accessing
/sys/devices/system/clocksource/clocksource0/current_clocksource
results in an oops.

It seems the timekeeper/clocksource rework missed initializing the
curr_clocksource value in the !GENERIC_TIME case.

Thanks to Aaro for reporting and diagnosing the issue as well as
testing the fix!

Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
LKML-Reference: <1267475683.4216.61.camel@localhost.localdomain>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2010-04-01 15:58:06 -07:00

..

clockevents.c

clockevents: Add missing include to pacify sparse

2010-01-28 15:00:24 -08:00

clocksource.c

timekeeping: Prevent oops when GENERIC_TIME=n

2010-04-01 15:58:06 -07:00

jiffies.c

clocksource: Cleanup clocksource selection

2009-08-15 10:55:46 +02:00

Kconfig

Kconfig: eliminate "def_bool n" constructs

2008-10-16 11:21:31 -07:00

Makefile

time: add function to convert between calendar time and broken-down time for universal use

2009-09-24 07:20:56 -07:00

ntp.c

timekeeping: Introduce timekeeping_leap_insert

2009-08-15 10:55:45 +02:00

tick-broadcast.c

clockevent: Prevent dead lock on clockevents_lock

2009-08-19 18:15:10 +02:00

tick-common.c

clockevents: prevent endless loop in tick_handle_periodic()

2009-05-02 10:22:27 +02:00

tick-internal.h

NOHZ: restart tick device from irq_enter()

2008-10-17 18:13:38 +02:00

tick-oneshot.c

clocksource: prevent selection of low resolution clocksourse also for nohz=on

2009-06-13 12:00:26 +02:00

tick-sched.c

nohz: Prevent clocksource wrapping during idle

2010-01-28 15:01:12 -08:00

timecompare.c

timecompare: generic infrastructure to map between two time bases

2009-02-15 22:43:32 -08:00

timeconv.c

time: add function to convert between calendar time and broken-down time for universal use

2009-09-24 07:20:56 -07:00

timekeeping.c

Export the symbol of getboottime and mmonotonic_to_bootbased

2010-02-23 07:37:52 -08:00

timer_list.c

const: constify remaining file_operations

2009-10-01 16:11:11 -07:00

timer_stats.c

const: constify remaining file_operations

2009-10-01 16:11:11 -07:00