Re: [PATCH v2 00/23] gpio: sysfs: fixes and clean ups

From: Alexandre Courbot
Date: Tue May 12 2015 - 02:38:20 EST

On Tue, May 5, 2015 at 12:10 AM, Johan Hovold <johan@xxxxxxxxxx> wrote:
> These patches fix a number of issues with the gpio sysfs interface,
> including
> - fix memory leaks and crashes on device hotplug
> - straighten out the convoluted locking
> - reduce sysfs-interface latencies through more fine-grained locking
> - more clearly separate the sysfs-interface implementation from gpiolib
> core
> The first patch is marked for stable and could go into 4.1. [ May
> already have been applied but not pushed by Linus, but included in v2
> for completeness. ]
> Unfortunately we can't just kill the gpio sysfs interface, but these
> patches will make it more manageable and should allow us to implement a
> new user-space interface while maintaining the old one (for a while at
> least) without losing our sanity.
> Note that there is still a race between chip remove and gpiod_request (and
> therefore sysfs export), which needs to be fixed separately (for instance as
> part of a generic solution to chip hotplugging).

Reiterating my

Reviewed-by: Alexandre Courbot <acourbot@xxxxxxxxxx>

on this very nice series.
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