Re: [PATCH] staging: greybus: light: initialize channel lock before registration

[Greg Kroah-Hartman]

On Wed, Aug 19, 2026 at 08:32:45PM +0800, Runyu Xiao wrote:
> On Tue, Aug 18, 2026 at 20:23:10 +0200, Greg Kroah-Hartman wrote:
> > How was this found and tested?
> 
> 
> Found by code inspection: gb_lights_channel_register() publishes the
> LED class device and its brightness callback before
> mutex_init(&light->channels[i].lock) runs, so a concurrent brightness
> update can take an uninitialized mutex.

<snip>

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greg k-h