Re: [PATCH] remoteproc/mtk_scp: surround DT device IDs with CONFIG_OF

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Hi Alexander,

On Mon, Nov 02, 2020 at 04:40:07PM +0900, Alexandre Courbot wrote:
> Now that this driver can be compiled with COMPILE_TEST, we have no
> guarantee that CONFIG_OF will also be defined. When that happens, a
> warning about mtk_scp_of_match being defined but unused will be reported
> so make sure this variable is only defined if of_match_ptr() actually
> uses it.
> 
> Fixes: cbd2dca74926c0e4610c40923cc786b732c9e8ef remoteproc: scp: add COMPILE_TEST dependency
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxxxx>
> ---
>  drivers/remoteproc/mtk_scp.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
> index 577cbd5d421e..f74f22d4d1ff 100644
> --- a/drivers/remoteproc/mtk_scp.c
> +++ b/drivers/remoteproc/mtk_scp.c
> @@ -772,12 +772,14 @@ static const struct mtk_scp_of_data mt8192_of_data = {
>  	.host_to_scp_int_bit = MT8192_HOST_IPC_INT_BIT,
>  };
>  
> +#if defined(CONFIG_OF)
>  static const struct of_device_id mtk_scp_of_match[] = {
>  	{ .compatible = "mediatek,mt8183-scp", .data = &mt8183_of_data },
>  	{ .compatible = "mediatek,mt8192-scp", .data = &mt8192_of_data },
>  	{},
>  };
>  MODULE_DEVICE_TABLE(of, mtk_scp_of_match);
> +#endif

I think it is better to add a "depends on OF" in the Kconfig.

Thanks,
Mathieu

>  
>  static struct platform_driver mtk_scp_driver = {
>  	.probe = scp_probe,
> -- 
> 2.29.1.341.ge80a0c044ae-goog
> 



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