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| author | Yogesh Lal <quic_ylal@quicinc.com> | 2024-12-20 12:39:07 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2025-01-15 11:42:44 +0300 |
| commit | 0d62a49ab55c99e8deb4593b8d9f923de1ab5c18 (patch) | |
| tree | dba0c80f218a2122172c81665af4ccb7f7e47a63 /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py | |
| parent | 5bc55a333a2f7316b58edc7573e8e893f7acb532 (diff) | |
| download | linux-0d62a49ab55c99e8deb4593b8d9f923de1ab5c18.tar.xz | |
irqchip/gic-v3: Handle CPU_PM_ENTER_FAILED correctly
When a CPU attempts to enter low power mode, it disables the redistributor
and Group 1 interrupts and reinitializes the system registers upon wakeup.
If the transition into low power mode fails, then the CPU_PM framework
invokes the PM notifier callback with CPU_PM_ENTER_FAILED to allow the
drivers to undo the state changes.
The GIC V3 driver ignores CPU_PM_ENTER_FAILED, which leaves the GIC in
disabled state.
Handle CPU_PM_ENTER_FAILED in the same way as CPU_PM_EXIT to restore normal
operation.
[ tglx: Massage change log, add Fixes tag ]
Fixes: 3708d52fc6bb ("irqchip: gic-v3: Implement CPU PM notifier")
Signed-off-by: Yogesh Lal <quic_ylal@quicinc.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/20241220093907.2747601-1-quic_ylal@quicinc.com
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py')
0 files changed, 0 insertions, 0 deletions