linux-kernel - Re: [PATCH] drm/tegra: vic: fix implicit function declaration warning

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Message-ID: <20190218144337.GB19190@ulmo>
Date:   Mon, 18 Feb 2019 15:43:37 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Anders Roxell <anders.roxell@...aro.org>
Cc:     airlied@...ux.ie, daniel@...ll.ch, jonathanh@...dia.com,
        dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/tegra: vic: fix implicit function declaration warning

On Mon, Feb 18, 2019 at 12:00:50PM +0100, Anders Roxell wrote:
> When CONFIG_IOMMU_API isn't set the following warnings pops up:
> 
> drivers/gpu/drm/tegra/vic.c: In function ‘vic_boot’:
> drivers/gpu/drm/tegra/vic.c:110:31: error: implicit declaration of function ‘dev_iommu_fwspec_get’; did you mean ‘iommu_fwspec_free’? [-Werror=implicit-function-declaration]
>    struct iommu_fwspec *spec = dev_iommu_fwspec_get(vic->dev);
>                                ^~~~~~~~~~~~~~~~~~~~
>                                iommu_fwspec_free
> drivers/gpu/drm/tegra/vic.c:110:31: warning: initialization of ‘struct iommu_fwspec *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
> drivers/gpu/drm/tegra/vic.c:117:19: error: ‘struct iommu_fwspec’ has no member named ‘num_ids’
>    if (spec && spec->num_ids > 0) {
>                    ^~
> drivers/gpu/drm/tegra/vic.c:118:16: error: ‘struct iommu_fwspec’ has no member named ‘ids’
>     value = spec->ids[0] & 0xffff;
>                 ^~
> 
> Rework so that its inside a '#ifdef CONFIG_IOMMU_API' block.
> 
> Fixes: f3779cb190a5 ("drm/tegra: vic: Support stream ID register programming")
> Signed-off-by: Anders Roxell <anders.roxell@...aro.org>
> ---
>  drivers/gpu/drm/tegra/vic.c | 2 ++
>  1 file changed, 2 insertions(+)

Applied, thanks.

Thierry

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