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| author | Ulf Magnusson <ulfalizer@gmail.com> | 2018-01-12 09:47:47 +0300 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-01-21 18:49:29 +0300 |
| commit | 6479f327dea60ddc2be065c7d174273fb4837f03 (patch) | |
| tree | 9b8639c5b9ef8676cb8d1640b19a82bc4c0a62ff /scripts/kconfig | |
| parent | b92d804a51796b77c7b2b11881b2700eaac88114 (diff) | |
| download | linux-6479f327dea60ddc2be065c7d174273fb4837f03.tar.xz | |
kconfig: Warn if there is more than one help text
Avoids mistakes like in the following real-world example, where only the
final help string ("Say Y...") was used. This particular example was
fixed in commit 561b29e4ec8d ("media: fix media Kconfig help syntax
issues").
config DVB_NETUP_UNIDVB
...
select DVB_CXD2841ER if MEDIA_SUBDRV_AUTOSELECT
---help---
Support for NetUP PCI express Universal DVB card.
help
Say Y when you want to support NetUP Dual Universal DVB card
...
This now prints the following warning:
drivers/media/pci/netup_unidvb:13: warning: 'DVB_NETUP_UNIDVB' defined with more than one help text -- only the last one will be used
Also free() any extra help strings.
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'scripts/kconfig')
| -rw-r--r-- | scripts/kconfig/zconf.y | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y index db5fbd8ac686..d2964c68f066 100644 --- a/scripts/kconfig/zconf.y +++ b/scripts/kconfig/zconf.y @@ -431,6 +431,11 @@ help_start: T_HELP T_EOL help: help_start T_HELPTEXT { + if (current_entry->help) { + free(current_entry->help); + zconfprint("warning: '%s' defined with more than one help text -- only the last one will be used", + current_entry->sym->name ?: "<choice>"); + } current_entry->help = $2; }; |