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authorRichard Kennedy <richard@rsk.demon.co.uk>2008-02-23 15:24:01 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-23 17:12:16 -0800
commit00d6296145c6b671a9886e380efc24f2731d856a (patch)
tree2dbef82cc0b1b89d23187ade50ee4042c5bc10b0 /scripts/kernel-doc
parentff10e5dc1781cd0121f8ee936234c222ff15c105 (diff)
kernel-doc: fix function-pointer-parameter parsing
When running "make htmldocs" I'm seeing some non-fatal perl errors caused by trying to parse the callback function definitions in blk-core.c. The errors are "Use of uninitialized value in concatenation (.)..." in combination with: Warning(linux-2.6.25-rc2/block/blk-core.c:1877): No description found for parameter '' The function pointers are defined without a * i.e. int (drv_callback)(struct request *) The compiler is happy with them, but kernel-doc isn't. This patch teaches create_parameterlist in kernel-doc to parse this type of function pointer definition, but is it the right way to fix the problem ? The problem only seems to occur in blk-core.c. However with the patch applied, kernel-doc finds the correct parameter description for the callback in blk_end_request_callback, which is doesn't normally. I thought it would be a bit odd to change to code to use the more normal form of function pointers just to get the documentation to work, so I fixed kernel-doc instead - even though this is teaching it to understand code that might go away (The comment for blk_end_request_callback says that it should not be used and will removed at some point). Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts/kernel-doc')
-rwxr-xr-xscripts/kernel-doc6
1 files changed, 3 insertions, 3 deletions
diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 26146cbaa504..74c2f9db2aac 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -1512,13 +1512,13 @@ sub create_parameterlist($$$) {
# corresponding data structures "correctly". Catch it later in
# output_* subs.
push_parameter($arg, "", $file);
- } elsif ($arg =~ m/\(.*\*/) {
+ } elsif ($arg =~ m/\(.+\)\s*\(/) {
# pointer-to-function
$arg =~ tr/#/,/;
- $arg =~ m/[^\(]+\(\*\s*([^\)]+)\)/;
+ $arg =~ m/[^\(]+\(\*?\s*(\w*)\s*\)/;
$param = $1;
$type = $arg;
- $type =~ s/([^\(]+\(\*)$param/$1/;
+ $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
push_parameter($param, $type, $file);
} elsif ($arg) {
$arg =~ s/\s*:\s*/:/g;

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