Subject: Re: [PATCH v5 4/8] thunderbolt: Communication with the ICM (firmware)

From: Stephen Hemminger <[email-masked]>
Date: Fri, 29 Jul 2016 14:02:24 -0700

On Thu, 28 Jul 2016 11:15:17 +0300
Amir Levy <[email-masked]> wrote:

> +static LIST_HEAD(controllers_list);
> +static DECLARE_RWSEM(controllers_list_rwsem);

Why use a semaphore when simple spinlock or mutex would be better?