linux-kernel - Re: [PATCH v2] of/unittest: Disable new dtc node_name_vs_property_name and interrupt

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Date:   Thu, 28 Oct 2021 20:12:12 -0500
From:   Frank Rowand <frowand.list@...il.com>
To:     Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [PATCH v2] of/unittest: Disable new dtc
 node_name_vs_property_name and interrupt_map warnings

Hi Rob,

On 10/28/21 8:04 AM, Rob Herring wrote:
> The unittest dtbs have various intentional errors which cause warnings.
> With the latest dtc sync to v1.6.1-19-g0a3a9d3449c8, we need to disable
> some new checks: node_name_vs_property_name and interrupt_map warnings.
> These warnings are also generated for static_base_1.dtb, so add
> DTC_FLAGS for it.
> 
> Note that the interrupt_map warnings only appear once interrupt_provider
> warning is re-enabled globally.
> 
> drivers/of/unittest-data/tests-interrupts.dtsi:32.26-35.6: Warning (interrupt_map): /testcase-data/interrupts/intmap1: Missing '#address-cells' in interrupt-map provider
> 
> Fixes: e76187b9792e ("scripts/dtc: Update to upstream version v1.6.1-19-g0a3a9d3449c8")
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Cc: Frank Rowand <frowand.list@...il.com>
> Signed-off-by: Rob Herring <robh@...nel.org>
> ---
>  drivers/of/unittest-data/Makefile | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/of/unittest-data/Makefile b/drivers/of/unittest-data/Makefile
> index a5d2d9254b2c..fbded24c608c 100644
> --- a/drivers/of/unittest-data/Makefile
> +++ b/drivers/of/unittest-data/Makefile
> @@ -37,7 +37,9 @@ DTC_FLAGS_overlay_base += -@
>  DTC_FLAGS_testcases += -@
>  
>  # suppress warnings about intentional errors
> -DTC_FLAGS_testcases += -Wno-interrupts_property
> +DTC_FLAGS_testcases += -Wno-interrupts_property \
> +	-Wno-node_name_vs_property_name \
> +	-Wno-interrupt_map
>  
>  # Apply overlays statically with fdtoverlay.  This is a build time test that
>  # the overlays can be applied successfully by fdtoverlay.  This does not
> @@ -82,6 +84,10 @@ apply_static_overlay_1 := overlay_0.dtbo \
>  
>  apply_static_overlay_2 := overlay.dtbo
>  
> +DTC_FLAGS_static_base_1 += -Wno-interrupts_property \
> +	-Wno-node_name_vs_property_name \
> +	-Wno-interrupt_map
> +
>  static_test_1-dtbs := static_base_1.dtb $(apply_static_overlay_1)
>  static_test_2-dtbs := static_base_2.dtb $(apply_static_overlay_2)
>  
> 

Thanks for splitting the DTC_FLAGS into per file values.

I dug into the unittest code that uses the dts node that causes the
interrupt map warning and do not see any reason not to fix the dts
so that the warning will not occur, instead of masking it with
the DTC_FLAGS.  I just now submitted a patch to fix the .dtsi at

  https://lore.kernel.org/all/20211029005802.2047081-1-frowand.list@gmail.com/

-Frank