linux-kernel - Re: [PATCH v2 09/34] media: iris: initialize shared queues for host and firmware communication

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Date: Mon, 18 Dec 2023 22:33:27 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Dikshita Agarwal <quic_dikshita@...cinc.com>,
 linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
 stanimir.k.varbanov@...il.com, quic_vgarodia@...cinc.com, agross@...nel.org,
 andersson@...nel.org, mchehab@...nel.org, bryan.odonoghue@...aro.org
Cc: linux-arm-msm@...r.kernel.org, quic_abhinavk@...cinc.com
Subject: Re: [PATCH v2 09/34] media: iris: initialize shared queues for host
 and firmware communication



On 12/18/23 12:32, Dikshita Agarwal wrote:
> Shared queues are used for communication between driver and firmware.
> There are 3 types of queues:
> Command queue - driver to write any command to firmware.
> Message queue - firmware to send any response to driver.
> Debug queue - firmware to write debug message.
> 
> Above queues are initialized and configured to firmware during probe.
> 
> Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
> ---
[...]

> +	ret = hfi_queue_init(core->dev, &core->iface_q_table, &core->sfr,
> +			     &core->command_queue, &core->message_queue,
> +			     &core->debug_queue, core);
> +	if (ret) {
> +		dev_err_probe(core->dev, ret,
> +			      "%s: interface queues init failed\n", __func__);
> +		goto err_vdev_unreg;
> +	}
> +
>   	return ret;
Like before, you're suppose to return dev_err_probe

Konrad