From caf2a54f101a55ec318c2a20253a1977802f7de4 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Wed, 12 Jan 2011 16:59:56 -0800 Subject: scripts/checkpatch.pl: add check for multiple terminating semicolons and casts of vmalloc Signed-off-by: Joe Perches Cc: Andy Whitcroft Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/checkpatch.pl | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'scripts/checkpatch.pl') diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index e3c7fc0dca38..36d6851f97d0 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -2785,10 +2785,15 @@ sub process { } # check for pointless casting of kmalloc return - if ($line =~ /\*\s*\)\s*k[czm]alloc\b/) { + if ($line =~ /\*\s*\)\s*[kv][czm]alloc(_node){0,1}\b/) { WARN("unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr); } +# check for multiple semicolons + if ($line =~ /;\s*;\s*$/) { + WARN("Statements terminations use 1 semicolon\n" . $herecurr); + } + # check for gcc specific __FUNCTION__ if ($line =~ /__FUNCTION__/) { WARN("__func__ should be used instead of gcc specific __FUNCTION__\n" . $herecurr); -- cgit v1.2.3 From c023e4734c3e8801e0ecb5e81b831d42a374d861 Mon Sep 17 00:00:00 2001 From: Florian Mickler Date: Wed, 12 Jan 2011 16:59:58 -0800 Subject: checkpatch.pl: fix CAST detection We should only claim that something is a cast if we did not encouter a token before, that did set av_pending. This fixes the operator * in the line below to be detected as binary (vs unary). kmalloc(sizeof(struct alphatrack_ocmd) * true_size, GFP_KERNEL); Reported-by: Audun Hoem Signed-off-by: Florian Mickler Cc: Andy Whitcroft Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/checkpatch.pl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'scripts/checkpatch.pl') diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 36d6851f97d0..ddd27d8e6312 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -859,7 +859,7 @@ sub annotate_values { $av_preprocessor = 0; } - } elsif ($cur =~ /^(\(\s*$Type\s*)\)/) { + } elsif ($cur =~ /^(\(\s*$Type\s*)\)/ && $av_pending eq '_') { print "CAST($1)\n" if ($dbg_values > 1); push(@av_paren_type, $type); $type = 'C'; -- cgit v1.2.3 From 88f8831c055858179a7844d9dd4ddd7d3621322e Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Wed, 12 Jan 2011 16:59:59 -0800 Subject: checkpatch: check for world-writeable sysfs/debugfs files Exporting world writable sysfs/debugfs files is usually a bad thing. Warn about it. Signed-off-by: Dave Jones Cc: Andy Whitcroft Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/checkpatch.pl | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'scripts/checkpatch.pl') diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index ddd27d8e6312..fd9560ea976c 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -2897,6 +2897,11 @@ sub process { ERROR("lockdep_no_validate class is reserved for device->mutex.\n" . $herecurr); } } + + if ($line =~ /debugfs_create_file.*S_IWUGO/ || + $line =~ /DEVICE_ATTR.*S_IWUGO/ ) { + WARN("Exporting world writable files is usually an error. Consider more restrictive permissions.\n" . $herecurr); + } } # If we have no input at all, then there is nothing to report on -- cgit v1.2.3 From 3d130fd03e06672f7700e2cb694b29f9a98227ca Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Wed, 12 Jan 2011 17:00:00 -0800 Subject: checkpatch.pl: add "prefer __packed" check There's a __packed #define for __attribute__((packed)). Add a checkpatch to tell people about it. Signed-off-by: Joe Perches Cc: Andy Whitcroft Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/checkpatch.pl | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'scripts/checkpatch.pl') diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index fd9560ea976c..4c0383da1c9a 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -2743,6 +2743,11 @@ sub process { WARN("plain inline is preferred over $1\n" . $herecurr); } +# Check for __attribute__ packed, prefer __packed + if ($line =~ /\b__attribute__\s*\(\s*\(.*\bpacked\b/) { + WARN("__packed is preferred over __attribute__((packed))\n" . $herecurr); + } + # check for sizeof(&) if ($line =~ /\bsizeof\s*\(\s*\&/) { WARN("sizeof(& should be avoided\n" . $herecurr); -- cgit v1.2.3