linux-kernel - Re: [PATCH v2] reset: make shared pulsed reset controls re-triggerable

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Date:   Fri, 13 Nov 2020 16:04:09 +0100
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     Amjad Ouled-Ameur <aouledameur@...libre.com>
Cc:     linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        linux-usb@...r.kernel.org, Jerome Brunet <jbrunet@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Jim Quinlan <james.quinlan@...adcom.com>
Subject: Re: [PATCH v2] reset: make shared pulsed reset controls
 re-triggerable

On Fri, 2020-11-13 at 00:00 +0100, Amjad Ouled-Ameur wrote:
> The current reset framework API does not allow to release what is done by
> reset_control_reset(), IOW decrement triggered_count. Add the new
> reset_control_rearm() call to do so.
> 
> When reset_control_reset() has been called once, the counter
> triggered_count, in the reset framework, is incremented i.e the resource
> under the reset is in-use and the reset should not be done again.
> reset_control_rearm() would be the way to state that the resource is
> no longer used and, that from the caller's perspective, the reset can be
> fired again if necessary.
> 
> Signed-off-by: Amjad Ouled-Ameur <aouledameur@...libre.com>
> Reported-by: Jerome Brunet <jbrunet@...libre.com>
> ---
> Change since v1: [0]
> * Renamed the new call from reset_control_(array_)resettable to 
> reset_control_(array_)rearm
> * Open-coded reset_control_array_rearm to check for errors before
> decrementing triggered_count because we cannot roll back in case an
> error occurs while decrementing one of the rstc.
> * Reworded the new call's description.

Thank you, applied to reset/next.

regards
Philipp