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| author |   Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2025-04-04 15:31:16 +0200 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2025-05-05 15:34:49 +0200 |
| commit | 94cff94634e506a4a44684bee1875d2dbf782722 (patch) | |
| tree | 5ec104f7995e500fb45117ac58a139d6e0b1405a /scripts/lib/kdoc/kdoc_output.py | |
| parent | arm64: vdso: Work around invalid absolute relocations from GCC (diff) | |
| download | linux-rng-94cff94634e506a4a44684bee1875d2dbf782722.tar.xz linux-rng-94cff94634e506a4a44684bee1875d2dbf782722.zip | |
clocksource/i8253: Use raw_spinlock_irqsave() in clockevent_i8253_disable()
On x86 during boot, clockevent_i8253_disable() can be invoked via
x86_late_time_init -> hpet_time_init() -> pit_timer_init() which happens
with enabled interrupts.
If some of the old i8253 hardware is actually used then lockdep will notice
that i8253_lock is used in hard interrupt context. This causes lockdep to
complain because it observed the lock being acquired with interrupts
enabled and in hard interrupt context.
Make clockevent_i8253_disable() acquire the lock with
raw_spinlock_irqsave() to cure this.
[ tglx: Massage change log and use guard() ]
Fixes: c8c4076723dac ("x86/timer: Skip PIT initialization on modern chipsets")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/20250404133116.p-XRWJXf@linutronix.de
Diffstat (limited to 'scripts/lib/kdoc/kdoc_output.py')
0 files changed, 0 insertions, 0 deletions