linux-kernel - Re: [PATCH v3 8/9] drm/tegra: vic: Implement get_streamid

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Message-ID: <b1df816b-6838-c435-1a23-5029144e4cfe@gmail.com>
Date:   Sat, 19 Feb 2022 21:49:11 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Mikko Perttunen <mperttunen@...dia.com>, thierry.reding@...il.com,
        jonathanh@...dia.com, joro@...tes.org, will@...nel.org,
        robh+dt@...nel.org, robin.murphy@....com
Cc:     linux-tegra@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 8/9] drm/tegra: vic: Implement get_streamid_offset

18.02.2022 14:39, Mikko Perttunen пишет:
> +static int vic_get_streamid_offset(struct tegra_drm_client *client)
> +{
> +	struct vic *vic = to_vic(client);
> +	int err;
> +
> +	err = vic_load_firmware(vic);

You can't invoke vic_load_firmware() while RPM is suspended. Either
replace this with RPM get/put or do something else.

> +	if (err < 0)
> +		return err;
> +
> +	if (vic->can_use_context)
> +		return 0x30;
> +	else
> +		return -ENOTSUPP;

If (!vic->can_use_context)
	return -ENOTSUPP;

return 0x30;