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SubjectRe: [PATCH v2] kbuild: Handle builtin dtb file names containing hyphens
2018-03-08 20:02 GMT+09:00 James Hogan <>:
> cmd_dt_S_dtb constructs the assembly source to incorporate a devicetree
> FDT (that is, the .dtb file) as binary data in the kernel image. This
> assembly source contains labels before and after the binary data. The
> label names incorporate the file name of the corresponding .dtb file.
> Hyphens are not legal characters in labels, so .dtb files built into the
> kernel with hyphens in the file name result in errors like the
> following:
> bcm3368-netgear-cvg834g.dtb.S: Assembler messages:
> bcm3368-netgear-cvg834g.dtb.S:5: Error: : no such section
> bcm3368-netgear-cvg834g.dtb.S:5: Error: junk at end of line, first unrecognized character is `-'
> bcm3368-netgear-cvg834g.dtb.S:6: Error: unrecognized opcode `__dtb_bcm3368-netgear-cvg834g_begin:'
> bcm3368-netgear-cvg834g.dtb.S:8: Error: unrecognized opcode `__dtb_bcm3368-netgear-cvg834g_end:'
> bcm3368-netgear-cvg834g.dtb.S:9: Error: : no such section
> bcm3368-netgear-cvg834g.dtb.S:9: Error: junk at end of line, first unrecognized character is `-'
> Fix this by updating cmd_dt_S_dtb to transform all hyphens from the file
> name to underscores when constructing the labels.
> As of v4.16-rc2, 1139 .dts files across ARM64, ARM, MIPS and PowerPC
> contain hyphens in their names, but the issue only currently manifests
> on Broadcom MIPS platforms, as that is the only place where such files
> are built into the kernel. For example when CONFIG_DT_NETGEAR_CVG834G=y,
> or on BMIPS kernels when the dtbs target is used (in the latter case it
> admittedly shouldn't really build all the dtb.o files, but thats a
> separate issue).
> Fixes: 695835511f96 ("MIPS: BMIPS: rename bcm96358nb4ser to bcm6358-neufbox4-sercom")
> Signed-off-by: James Hogan <>
> Reviewed-by: Frank Rowand <>
> Cc: Rob Herring <>
> Cc: Masahiro Yamada <>
> Cc: Michal Marek <>
> Cc: Ralf Baechle <>
> Cc: Florian Fainelli <>
> Cc: Kevin Cernekee <>
> Cc:
> Cc:
> Cc:
> Cc: <> # 4.9+
> ---
> Changes in v2:
> - Rewrite commit message (thanks Frank for some improved wording).
> - Add Franks' reviewed-by.

Applied to linux-kbuild/fixes. Thanks!

Best Regards
Masahiro Yamada

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