[coreboot-gerrit] Change in ...coreboot[master]: kconfig_lint: Make uses of CONFIG() on an unknown option an error

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change and it was merged. ( https://review.coreboot.org/c/coreboot/+/32257 )

Change subject: kconfig_lint: Make uses of CONFIG() on an unknown option an error
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kconfig_lint: Make uses of CONFIG() on an unknown option an error

This check had very few false positives which were all easily resolved,
and it's unlikely that further false positives will become problematic
in the future. On the other hand, it does detect a very severe bug (when
you think you're using a Kconfig but you aren't due to a typo), so since
warnings are currently not very visible, let's turn this into an error
because the pros clearly outweigh the cons for that.

Change-Id: I897b5e13d3242fb77b69f0bd3585baa7476aa726
Signed-off-by: Julius Werner 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32257
Reviewed-by: Furquan Shaikh 
Reviewed-by: Paul Menzel 
Reviewed-by: Nico Huber 
Tested-by: build bot (Jenkins) 
---
M util/lint/kconfig_lint
1 file changed, 2 insertions(+), 2 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Nico Huber: Looks good to me, approved
  Paul Menzel: Looks good to me, but someone else must approve
  Furquan Shaikh: Looks good to me, approved

diff --git a/util/lint/kconfig_lint b/util/lint/kconfig_lint
index 4d0a755..502a618 100755
--- a/util/lint/kconfig_lint
+++ b/util/lint/kconfig_lint
@@ -47,7 +47,7 @@
 my $exclude_dirs_and_files =
   '^build/|^coreboot-builds/|^configs/|^util/|^.git/|^payloads|^Documentation|^3rdparty'
   . '|' .                            # directories to exclude when searching for used symbols
-  '.config|.txt$|.tex$|.tags'; #files to exclude when looking for symbols
+  '.config|.txt$|.tex$|.tags|/kconfig.h'; #files to exclude when looking for symbols
 my $payload_files_to_check='payloads/Makefile.inc payloads/external/Makefile.inc';
 my $config_file = "";                 # name of config file to load symbol values from.
 my @wholeconfig;                      # document the entire kconfig structure
@@ -314,7 +314,7 @@
                     }
                 }
                 else {
-                    show_warning("CONFIG() used on unknown value ($symbol) at $file:$lineno.");
+                    show_error("CONFIG() used on unknown value ($symbol) at $file:$lineno.");
                 }
             }
         } elsif ( $line =~ /^([^:]+):(\d+):(.+IS_ENABLED.*)/ ) {