Re: [PATCH V3] leds: trigger: Introduce an USB port trigger

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On Wed, Aug 24, 2016 at 12:03:29AM +0200, Rafał Miłecki wrote:
> From: Rafał Miłecki <rafal@xxxxxxxxxx>
> 
> This commit adds a new trigger responsible for turning on LED when USB
> device gets connected to the specified USB port. This can can useful for
> various home routers that have USB port(s) and a proper LED telling user
> a device is connected.
> 
> The trigger gets its documentation file but basically it just requires
> specifying USB port in a Linux format (e.g. echo 1-1 > new_port).
> 
> During work on this trigger there was a plan to add DT bindings for it,
> but there wasn't an agreement on the format yet. This can be worked on
> later, a sysfs interface is needed anyway for platforms not using DT.
> 
> Signed-off-by: Rafał Miłecki <rafal@xxxxxxxxxx>
> ---
> V2: Trying to add DT support, idea postponed as it will take more time
>     to discuss the bindings.
> V3: Fix typos in commit and Documentation (thanks Jacek!)
>     Use "ports" sysfs file for adding and removing USB ports (thx Jacek)
>     Check if there is USB device connected after adding new USB port
>     Fix memory leak or two
> 
> Felipe: I'd like to ask for your Ack before having this patch pushed.
> ---
>  Documentation/leds/ledtrig-usbport.txt |  49 +++++++
>  drivers/leds/trigger/Kconfig           |   8 ++
>  drivers/leds/trigger/Makefile          |   1 +
>  drivers/leds/trigger/ledtrig-usbport.c | 253 +++++++++++++++++++++++++++++++++
>  4 files changed, 311 insertions(+)
>  create mode 100644 Documentation/leds/ledtrig-usbport.txt
>  create mode 100644 drivers/leds/trigger/ledtrig-usbport.c

You are adding sysfs files without adding a Documentation/ABI/ entry,
please never do that.

NAK.

greg k-h
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