[PATCH] checkpatch: add help info if no filenames are given

From: Tiezhu Yang
Date: Mon May 17 2021 - 21:25:14 EST


After commit 45107ff6d526 ("checkpatch: if no filenames then read stdin"),
if no filenames are given, it will read patch from stdin rather than exit
directly. This means the script waits for input indefinitely, which
confuses new checkpatch users at first.

Add some help info on this behaviour of checkpatch to lower the confusion.

Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
---
scripts/checkpatch.pl | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 23697a6..825eb00 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -80,6 +80,8 @@ sub help {
Usage: $P [OPTION]... [FILE]...
Version: $V

+When FILE is -, or absent, checkpatch reads from standard input.
+
Options:
-q, --quiet quiet
-v, --verbose verbose mode
@@ -138,8 +140,6 @@ Options:
--kconfig-prefix=WORD use WORD as a prefix for Kconfig symbols (default
${CONFIG_})
-h, --help, --version display this help and exit
-
-When FILE is - read standard input.
EOM

exit($exitcode);
--
2.1.0