On 1/13/22 2:19 AM, Matthias Schiffer wrote:
> dtx_diff suggests to use <(...) syntax to pipe two inputs into it, but
> this has never worked: The /proc/self/fds/... paths passed by the shell
> will fail the `[ -f "${dtx}" ] && [ -r "${dtx}" ]` check in compile_to_dts,
> but even with this check removed, the function cannot work: hexdump will
> eat up the DTB magic, making the subsequent dtc call fail, as a pipe
> cannot be rewound.
>
> Simply remove this broken example, as there is already an alternative one
> that works fine.
>
> Fixes: 10eadc253ddf ("dtc: create tool to diff device trees")
> Signed-off-by: Matthias Schiffer <matthias.schiffer@xxxxxxxxxxxxxxx>
> ---
> scripts/dtc/dtx_diff | 8 ++------
> 1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/scripts/dtc/dtx_diff b/scripts/dtc/dtx_diff
> index d3422ee15e30..f2bbde4bba86 100755
> --- a/scripts/dtc/dtx_diff
> +++ b/scripts/dtc/dtx_diff
> @@ -59,12 +59,8 @@ Otherwise DTx is treated as a dts source file (aka .dts).
> or '/include/' to be processed.
>
> If DTx_1 and DTx_2 are in different architectures, then this script
> - may not work since \${ARCH} is part of the include path. Two possible
> - workarounds:
> -
> - `basename $0` \\
> - <(ARCH=arch_of_dtx_1 `basename $0` DTx_1) \\
> - <(ARCH=arch_of_dtx_2 `basename $0` DTx_2)
> + may not work since \${ARCH} is part of the include path. The following
> + workaround can be used:
>
> `basename $0` ARCH=arch_of_dtx_1 DTx_1 >tmp_dtx_1.dts
> `basename $0` ARCH=arch_of_dtx_2 DTx_2 >tmp_dtx_2.dts
>
Reviewed-by: Frank Rowand <frank.rowand@xxxxxxxx>
