Hi,
On Thu, Aug 01, 2019 at 02:33:30PM -0700, Stephen Boyd wrote:
> We may want to use the device pointer in device_init_wakeup() with
> functions that expect the device to already be added with device_add().
> For example, if we were to link the device initializing wakeup to
> something in sysfs such as a class for wakeups we'll run into an error.
> It looks like this code was written with the assumption that the device
> would be added before initializing wakeup due to the order of operations
> in power_supply_unregister().
>
> Let's change the order of operations so we don't run into problems here.
>
> Fixes: 948dcf966228 ("power_supply: Prevent suspend until power supply events
> are processed")
> Cc: Greg Kroah-Hartman <[email protected]>
>
>
> Cc: Tri Vo <[email protected]>
>
>
> Cc: Kalesh Singh <[email protected]>
> Cc: Ravi Chandra Sadineni <[email protected]>
> Cc: "Rafael J. Wysocki" <[email protected]>
> Cc: Viresh Kumar <[email protected]>
> Signed-off-by: Stephen Boyd <[email protected]>
> ---Thanks, queued. -- Sebastian > > See this thread[1] for more information on how this will be necessary. > > [1] https://lkml.kernel.org/r/[email protected] > > > drivers/power/supply/power_supply_core.c | 10 +++++----- > 1 file changed, 5 insertions(+), 5 deletions(-) > > diff --git a/drivers/power/supply/power_supply_core.c > b/drivers/power/supply/power_supply_core.c > index 82e84801264c..5c36c430ce8b 100644 > --- a/drivers/power/supply/power_supply_core.c > +++ b/drivers/power/supply/power_supply_core.c > @@ -1051,14 +1051,14 @@ __power_supply_register(struct device *parent, > } > > spin_lock_init(&psy->changed_lock); > - rc = device_init_wakeup(dev, ws); > - if (rc) > - goto wakeup_init_failed; > - > rc = device_add(dev); > if (rc) > goto device_add_failed; > > + rc = device_init_wakeup(dev, ws); > + if (rc) > + goto wakeup_init_failed; > + > rc = psy_register_thermal(psy); > if (rc) > goto register_thermal_failed; > @@ -1101,8 +1101,8 @@ __power_supply_register(struct device *parent, > psy_unregister_thermal(psy); > register_thermal_failed: > device_del(dev); > -device_add_failed: > wakeup_init_failed: > +device_add_failed: > check_supplies_failed: > dev_set_name_failed: > put_device(dev); > -- > Sent by a computer through tubes >
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