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bq27x00_battery: Fix OOPS caused by unregistring bq27x00 driver

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* power_supply_unregister call bq27x00_battery_get_property which
  call bq27x00_battery_poll
* make sure that bq27x00_battery_poll will not call
  schedule_delayed_work again after unregister (which cause OOPS)

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
This commit is contained in:
Pali Rohár 2011-11-01 01:43:11 +01:00 committed by Anton Vorontsov
parent c6cd4f267d
commit 8cfaaa8118
1 changed files with 8 additions and 0 deletions
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8
drivers/power/bq27x00_battery.c
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@ -598,6 +598,14 @@ static int bq27x00_powersupply_init(struct bq27x00_device_info *di)
static void bq27x00_powersupply_unregister(struct bq27x00_device_info *di) static void bq27x00_powersupply_unregister(struct bq27x00_device_info *di)
{ {
/*
* power_supply_unregister call bq27x00_battery_get_property which
* call bq27x00_battery_poll.
* Make sure that bq27x00_battery_poll will not call
* schedule_delayed_work again after unregister (which cause OOPS).
*/
poll_interval = 0;
cancel_delayed_work_sync(&di->work); cancel_delayed_work_sync(&di->work);
power_supply_unregister(&di->bat); power_supply_unregister(&di->bat);