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author | Otavio Salvador <otavio@ossystems.com.br> | 2018-12-12 11:20:31 -0200 |
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committer | GitHub <noreply@github.com> | 2018-12-12 11:20:31 -0200 |
commit | 1e71d8c630cbc0d1f5d762fd019690b5cdb880ae (patch) | |
tree | 58b4b37bed385b27fc5956435b2451c760f26f5f /drivers/power/supply/power_supply_core.c | |
parent | 5f3fecbc0715a70437501e1d85e74726c4f561be (diff) | |
parent | cfbbc7703fff59c67761c93a8b1de29a79f9841c (diff) |
Merge pull request #40 from toradex/4.9-2.3.x-imx
4.9 2.3.x imx
Diffstat (limited to 'drivers/power/supply/power_supply_core.c')
-rw-r--r-- | drivers/power/supply/power_supply_core.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c index a74d8ca383a1..9e05ae0430a9 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -14,6 +14,7 @@ #include <linux/types.h> #include <linux/init.h> #include <linux/slab.h> +#include <linux/delay.h> #include <linux/device.h> #include <linux/notifier.h> #include <linux/err.h> @@ -138,8 +139,13 @@ static void power_supply_deferred_register_work(struct work_struct *work) struct power_supply *psy = container_of(work, struct power_supply, deferred_register_work.work); - if (psy->dev.parent) - mutex_lock(&psy->dev.parent->mutex); + if (psy->dev.parent) { + while (!mutex_trylock(&psy->dev.parent->mutex)) { + if (psy->removing) + return; + msleep(10); + } + } power_supply_changed(psy); @@ -944,6 +950,7 @@ EXPORT_SYMBOL_GPL(devm_power_supply_register_no_ws); void power_supply_unregister(struct power_supply *psy) { WARN_ON(atomic_dec_return(&psy->use_cnt)); + psy->removing = true; cancel_work_sync(&psy->changed_work); cancel_delayed_work_sync(&psy->deferred_register_work); sysfs_remove_link(&psy->dev.kobj, "powers"); |