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| /linux/drivers/power/supply/ |
| H A D | max14656_charger_detector.c | diff 0cd0e49711556d2331a06b1117b68dd786cb54d2 Fri Feb 15 22:43:02 CET 2019 Sven Van Asbroeck <thesven73@gmail.com> power: supply: max14656: fix potential use-before-alloc
Call order on probe():
- max14656_hw_init() enables interrupts on the chip
- devm_request_irq() starts processing interrupts, isr
could be called immediately
- isr: schedules delayed work (irq_work)
- irq_work: calls power_supply_changed()
- devm_power_supply_register() registers the power supply
Depending on timing, it's possible that power_supply_changed()
is called on an unregistered power supply structure.
Fix by registering the power supply before requesting the irq.
Cc: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
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