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 (.)..."
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.
(the patch is against v2.6.25-rc1)
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).
Any ideas on which is the best way to fix this?
Thanks
Richard
diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 26146cb..68b2e4e 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/([^\(]+\(\*?)$param/$1/;
push_parameter($param, $type, $file);
} elsif ($arg) {
$arg =~ s/\s*:\s*/:/g;
--
--
