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scripts/dtc: dtx_diff: remove broken example from help text
commitd8adf5b92a
upstream. 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:10eadc253d
("dtc: create tool to diff device trees") Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Reviewed-by: Frank Rowand <frank.rowand@sony.com> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220113081918.10387-1-matthias.schiffer@ew.tq-group.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -56,12 +56,8 @@ Otherwise DTx is treated as a dts source file (aka .dts).
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or '/include/' to be processed.
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If DTx_1 and DTx_2 are in different architectures, then this script
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may not work since \${ARCH} is part of the include path. Two possible
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workarounds:
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`basename $0` \\
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<(ARCH=arch_of_dtx_1 `basename $0` DTx_1) \\
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<(ARCH=arch_of_dtx_2 `basename $0` DTx_2)
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may not work since \${ARCH} is part of the include path. The following
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workaround can be used:
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`basename $0` ARCH=arch_of_dtx_1 DTx_1 >tmp_dtx_1.dts
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`basename $0` ARCH=arch_of_dtx_2 DTx_2 >tmp_dtx_2.dts
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