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SubjectRe: [PATCH v2] Documentation: sysfs-bus-usb: update power/persist description
On Wed, 2 Jul 2014, Paul Bolle wrote:

> There's no power/persist file for hubs. And CONFIG_USB_PERSIST was
> removed in v2.6.26. Update the description of power/persist accordingly.
> Also remove the line on its default value. It is not entirely correct, as
> CONFIG_USB_DEFAULT_PERSIST and the USB_QUIRK_RESET flag influence the
> default. It is not needed to understand this file anyhow.
>
> Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
> ---
> v2: incorporate Alan's feedback. The clearest way to do that was to not
> mention the default value at all. Trying to do handle the default
> correctly made the text way too complicated. I hope Alan agrees.
>
> Perhaps the line on hubs should not be added, as the text now states
> that device directories "can" contain this file.
>
> Documentation/ABI/stable/sysfs-bus-usb | 14 +++++++-------
> 1 file changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/Documentation/ABI/stable/sysfs-bus-usb b/Documentation/ABI/stable/sysfs-bus-usb
> index a6b685724740..e2bc700a6f9c 100644
> --- a/Documentation/ABI/stable/sysfs-bus-usb
> +++ b/Documentation/ABI/stable/sysfs-bus-usb
> @@ -3,13 +3,13 @@ Date: May 2007
> KernelVersion: 2.6.23
> Contact: Alan Stern <stern@rowland.harvard.edu>
> Description:
> - If CONFIG_USB_PERSIST is set, then each USB device directory
> - will contain a file named power/persist. The file holds a
> - boolean value (0 or 1) indicating whether or not the
> - "USB-Persist" facility is enabled for the device. Since the
> - facility is inherently dangerous, it is disabled by default
> - for all devices except hubs. For more information, see
> - Documentation/usb/persist.txt.
> + USB device directories can contain a file named power/persist.
> + The file holds a boolean value (0 or 1) indicating whether or
> + not the "USB-Persist" facility is enabled for the device. For
> + hubs this facility is always enabled and their device
> + directories will not contain this file.
> +
> + For more information, see Documentation/usb/persist.txt.
>
> What: /sys/bus/usb/devices/.../power/autosuspend
> Date: March 2007
>

Acked-by: Alan Stern <stern@rowland.harvard.edu>



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