Re: [PATCH v3 03/20] power_supply: Add API for safe access of power supply function attrs

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Fri 2015-01-30 15:47:41, Krzysztof Kozlowski wrote:
> Add simple wrappers for accessing power supply's function attributes:
>  - get_property -> power_supply_get_property
>  - set_property -> power_supply_set_property
>  - property_is_writeable -> power_supply_property_is_writeable
>  - external_power_changed -> power_supply_external_power_changed
> 
> This API along with atomic usage counter adds a safe way of accessing a
> power supply from another driver. If power supply is unregistered after
> obtaining reference to it by some driver, then the API wrappers won't be
> executed in invalid (freed) context.
> 
> Next patch changing the ownership of power supply class is still needed
> to fully fix race conditions in accessing freed power supply.
> 
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
> Reviewed-by: Sebastian Reichel <sre@xxxxxxxxxx>

For 1-3: Acked-by: Pavel Machek <pavel@xxxxxx>

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Kernel Development]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux