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| author | Johan Hovold <[email protected]> | 2023-02-13 10:42:48 +0000 |
|---|---|---|
| committer | Marc Zyngier <[email protected]> | 2023-02-13 19:31:24 +0000 |
| commit | 601363cc08da25747feb87c55573dd54de91d66a (patch) | |
| tree | 586e6bbcb208633cf0ccd19c84efd975b5e9f152 /tools/perf/scripts/python/mem-phys-addr.py | |
| parent | irqdomain: Refactor __irq_domain_alloc_irqs() (diff) | |
| download | kernel-601363cc08da25747feb87c55573dd54de91d66a.tar.gz kernel-601363cc08da25747feb87c55573dd54de91d66a.zip | |
irqdomain: Fix mapping-creation race
Parallel probing of devices that share interrupts (e.g. when a driver
uses asynchronous probing) can currently result in two mappings for the
same hardware interrupt to be created due to missing serialisation.
Make sure to hold the irq_domain_mutex when creating mappings so that
looking for an existing mapping before creating a new one is done
atomically.
Fixes: 765230b5f084 ("driver-core: add asynchronous probing support for drivers")
Fixes: b62b2cf5759b ("irqdomain: Fix handling of type settings for existing mappings")
Link: https://lore.kernel.org/r/[email protected]
Cc: [email protected] # 4.8
Cc: Dmitry Torokhov <[email protected]>
Cc: Jon Hunter <[email protected]>
Tested-by: Hsin-Yi Wang <[email protected]>
Tested-by: Mark-PK Tsai <[email protected]>
Signed-off-by: Johan Hovold <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/mem-phys-addr.py')
0 files changed, 0 insertions, 0 deletions