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Date:   Thu, 29 Sep 2022 11:59:08 -0500
From:   Bjorn Andersson <andersson@kernel.org>
To:     Elliot Berman <quic_eberman@quicinc.com>
Cc:     Bjorn Andersson <quic_bjorande@quicinc.com>,
        Jassi Brar <jassisinghbrar@gmail.com>,
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Subject: Re: [PATCH v4 09/14] mailbox: Add Gunyah message queue mailbox
Message-ID: <20220929165908.zgmlujhp42ihine5@builder.lan>
References: <20220928195633.2348848-1-quic_eberman@quicinc.com>
 <20220928195633.2348848-10-quic_eberman@quicinc.com>
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On Wed, Sep 28, 2022 at 12:56:28PM -0700, Elliot Berman wrote:
[..]
> diff --git a/drivers/mailbox/gunyah-msgq.c b/drivers/mailbox/gunyah-msgq.c
[..]
> +static int gh_msgq_send_data(struct mbox_chan *chan, void *data)
> +{
> +	struct gunyah_msgq *msgq = mbox_chan_to_msgq(chan);
> +	struct gunyah_msgq_tx_data *msgq_data = data;

The mailbox framework abstracts hardware mailboxes and @data
should be the data to be written to the hardware.

Using the void * to pass composite data types means that the client and
provider are tightly coupled and as such the mailbox framework does not
provide you any abstraction.

You also only expose a single channel, so a direct function call between
the two specific drivers would be a better fit.

Regards,
Bjorn