diff options
| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2017-12-15 19:18:10 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-12-21 09:30:32 +0100 |
| commit | 6b012d2311e5ba0a952c2dcfe4327a73353c9fdb (patch) | |
| tree | e97af7e0b8f43fda523ca0d8dfadf58265fdf3b0 /scripts/checkpatch.pl | |
| parent | b8c7723440324a7822acdb0b6f35c7ccb791862a (diff) | |
checkpatch: volatile with a comment or sig_atomic_t is okay
This assumes that the comment gives some justification;
"volatile sig_atomic_t" is also self-explanatory and usually
correct.
Discussed in:
'[Qemu-devel] [PATCH] dump-guest-memory.py: fix "You can't do that without a process to debug"'
Suggested-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20171215181810.4122-1-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'scripts/checkpatch.pl')
| -rwxr-xr-x | scripts/checkpatch.pl | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 34df753571..3dc27d9656 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -2475,8 +2475,11 @@ sub process { # no volatiles please my $asm_volatile = qr{\b(__asm__|asm)\s+(__volatile__|volatile)\b}; - if ($line =~ /\bvolatile\b/ && $line !~ /$asm_volatile/) { - ERROR("Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt\n" . $herecurr); + if ($line =~ /\bvolatile\b/ && $line !~ /$asm_volatile/ && + $line !~ /sig_atomic_t/ && + !ctx_has_comment($first_line, $linenr)) { + my $msg = "Use of volatile is usually wrong, please add a comment\n" . $herecurr; + ERROR($msg); } # warn about #if 0 |