[PATCH] checkpatch: Resolve improper warning for krealloc arg reuse

[Manish Narani]

Correct the check for reuse of krealloc. It gives false warning when a
structure member variable name and krealloc argument name is same.

For Example:
{
        ...
        abc.def_var = krealloc(def_var, sizeof(*def_var),
                                    GFP_KERNEL);
        ...
}

$ ./scripts/checkpatch.pl -f file.c

WARNING: Reusing the krealloc arg is almost always a bug
+       abc.def_var = krealloc(def_var, sizeof(*def_var),

This patch resolves the above false warning.

Signed-off-by: Manish Narani <manish.nar...@xilinx.com>
---
 scripts/checkpatch.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 447857f..db9b666 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -6119,7 +6119,7 @@ sub process {
 
 # check for krealloc arg reuse
                if ($^V && $^V ge 5.10.0 &&
-                   $line =~ 
/\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*krealloc\s*\(\s*\1\s*,/) {
+                   $line =~ 
/\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*krealloc\s*\(\s*\1\s*,/ && $line !~ 
m/[\.|\-\>].*\s*\=\s*.*/) {
                        WARN("KREALLOC_ARG_REUSE",
                             "Reusing the krealloc arg is almost always a 
bug\n" . $herecurr);
                }
-- 
2.1.1