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Subject[RFC] scripts: kernel-doc: fix typedef support for struct parsing
Date
There are files in kernel, which use 'typedef struct' syntax for defining
struct. For eg, include/linux/zstd.h, drivers/scsi/megaraid/mega_common.h,
etc.
However, kernel-doc still does not support it, causing a parsing error.

For eg, running scripts/kernel-doc -none on include/linux/zstd.h emits:
"error: Cannot parse struct or union!"

Add support for parsing it.

Signed-off-by: Aditya Srivastava <yashsri421@gmail.com>
---
scripts/kernel-doc | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 8b5bc7bf4bb8..46e904dc3f87 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -1201,12 +1201,20 @@ sub dump_union($$) {
sub dump_struct($$) {
my $x = shift;
my $file = shift;
+ my $decl_type;
+ my $members;

if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}(\s*(__packed|__aligned|____cacheline_aligned_in_smp|____cacheline_aligned|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*/) {
- my $decl_type = $1;
+ $decl_type = $1;
$declaration_name = $2;
- my $members = $3;
+ $members = $3;
+ } elsif ($x =~ /typedef\s+(struct|union)\s*\{(.*)\}(?:\s*(?:__packed|__aligned|____cacheline_aligned_in_smp|____cacheline_aligned|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*\s*(\w*)\s*;/) {
+ $decl_type = $1;
+ $declaration_name = $3;
+ $members = $2;
+ }

+ if ($members) {
if ($identifier ne $declaration_name) {
print STDERR "${file}:$.: warning: expecting prototype for $decl_type $identifier. Prototype was for $decl_type $declaration_name instead\n";
return;
--
2.17.1
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