The patch titled
kernel-doc: fix function-pointer-parameter parsing
has been added to the -mm tree. Its filename is
kernel-doc-fix-function-pointer-parameter-parsing.patch
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------------------------------------------------------
Subject: kernel-doc: fix function-pointer-parameter parsing
From: Richard Kennedy <[EMAIL PROTECTED]>
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 <[EMAIL PROTECTED]>
Signed-off-by: Randy Dunlap <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
scripts/kernel-doc | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff -puN scripts/kernel-doc~kernel-doc-fix-function-pointer-parameter-parsing
scripts/kernel-doc
--- a/scripts/kernel-doc~kernel-doc-fix-function-pointer-parameter-parsing
+++ a/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;
_
Patches currently in -mm which might be from [EMAIL PROTECTED] are
kernel-doc-fix-function-pointer-parameter-parsing.patch
-
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