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| author | Thomas Gleixner <tglx@linutronix.de> | 2009-01-25 11:31:36 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-30 22:35:34 +0100 |
| commit | b0a9b5111abf60ef07eade834f480e89004c7920 (patch) | |
| tree | a74aa7bacf920eb567cd7caa8027a06c96dbb220 /lib/prio_tree.c | |
| parent | 94df7de0289bc2df3d6e85cd2ece52bf42682f45 (diff) | |
| download | linux-b0a9b5111abf60ef07eade834f480e89004c7920.tar.gz linux-b0a9b5111abf60ef07eade834f480e89004c7920.tar.bz2 linux-b0a9b5111abf60ef07eade834f480e89004c7920.zip | |
hrtimer: prevent negative expiry value after clock_was_set()
Impact: prevent false positive WARN_ON() in clockevents_program_event()
clock_was_set() changes the base->offset of CLOCK_REALTIME and
enforces the reprogramming of the clockevent device to expire timers
which are based on CLOCK_REALTIME. If the clock change is large enough
then the subtraction of the timer expiry value and base->offset can
become negative which triggers the warning in
clockevents_program_event().
Check the subtraction result and set a negative value to 0.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'lib/prio_tree.c')
0 files changed, 0 insertions, 0 deletions