When possible, sleeping is (usually) better than delaying; however, don't bother callers of udelay < 10us, as those cases are generally not worth the switch to usleep
Signed-off-by: Patrick Pannuto <[email protected]> --- scripts/checkpatch.pl | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index bd88f11..1698c63 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -2570,6 +2570,14 @@ sub process { } } +# prefer usleep_range over udelay + if (($line =~ /\budelay\s*\(\s*(\w+)\s*\)/ { + # ignore udelay's < 10, however + if (! (($1 =~ /(\d+)/) && ($1 < 10)) ) { + CHK("usleep_range is preferred over udelay; see Documentation/timers/timers-howto.txt\n" . $line); + } + } + # warn about #ifdefs in C files # if ($line =~ /^.\s*\#\s*if(|n)def/ && ($realfile =~ /\.c$/)) { # print "#ifdef in C files should be avoided\n"; -- 1.7.2 -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
