Messages in this thread Patch in this message | | | From | Constantine Shulyupin <> | Subject | [PATCH v2] checkpatch: debugfs_remove() can take NULL | Date | Sat, 17 Nov 2012 16:36:05 +0200 |
| |
From: Constantine Shulyupin <const@MakeLinux.com>
debugfs_remove() and debugfs_remove_recursive() can take a NULL, so let's check and warn about that.
Channegs since v1:
- added debugfs_remove_recursive - all tests for pattenrs are "if (a) xxx(a)" are consolidates
Signed-off-by: Constantine Shulyupin <const@MakeLinux.com> --- scripts/checkpatch.pl | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index f18750e..2339b54 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -3213,21 +3213,29 @@ sub process { $herecurr); } -# check for needless kfree() checks +# check for needless "if" if ($prevline =~ /\bif\s*\(([^\)]*)\)/) { my $expr = $1; +# check for needless kfree() checks if ($line =~ /\bkfree\(\Q$expr\E\);/) { WARN("NEEDLESS_KFREE", "kfree(NULL) is safe this check is probably not required\n" . $hereprev); } - } # check for needless usb_free_urb() checks - if ($prevline =~ /\bif\s*\(([^\)]*)\)/) { - my $expr = $1; if ($line =~ /\busb_free_urb\(\Q$expr\E\);/) { WARN("NEEDLESS_USB_FREE_URB", "usb_free_urb(NULL) is safe this check is probably not required\n" . $hereprev); } +# check for needless debugfs_remove() checks + if ($line =~ /\bdebugfs_remove\(\Q$expr\E\);/) { + WARN("NEEDLESS_DEBUGFS_REMOVE", + "debugfs_remove(NULL) is safe this check is probably not required\n" . $hereprev); + } +# check for needless debugfs_remove_recursive() checks + if ($line =~ /\bdebugfs_remove_recursive\(\Q$expr\E\);/) { + WARN("NEEDLESS_DEBUGFS_REMOVE", + "debugfs_remove_recursive(NULL) is safe this check is probably not required\n" . $hereprev); + } } # prefer usleep_range over udelay -- 1.7.9.5
| |