linux-kernel - RE: [PATCH v10 6/7] i3c: master: sysfs key for acquire bus

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Message-ID: <CY4PR07MB27573869D366E84DBD1BF854C10E9@CY4PR07MB2757.namprd07.prod.outlook.com>
Date:   Thu, 17 Jun 2021 09:13:02 +0000
From:   Parshuram Raju Thombare <pthombar@...ence.com>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>
CC:     "slongerbeam@...il.com" <slongerbeam@...il.com>,
        "vitor.soares@...opsys.com" <vitor.soares@...opsys.com>,
        "linux-i3c@...ts.infradead.org" <linux-i3c@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Milind Parab <mparab@...ence.com>,
        "praneeth@...com" <praneeth@...com>
Subject: RE: [PATCH v10 6/7] i3c: master: sysfs key for acquire bus

>I'm wondering whether we should allow userspace to actually control
>that. Shouldn't we simply request mastership when a driver needs to talk
>to a device on the bus? Is it really useful to have that until there is
>an i3c-dev userspace interface?

Yes, for now it is useful for nothing more than triggering mastership request
from user space. It can be dropped and added later if needed for i3c-dev
user space interface.