Emit a warning when using any of these __constant_<foo> forms: __constant_cpu_to_be[x] __constant_cpu_to_le[x] __constant_be[x]_to_cpu __constant_le[x]_to_cpu __constant_htons __constant_ntohs Using any of these outside of include/uapi/ isn't preferred as using the function without __constant_ is identical when the argument is a constant.
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| @@ -3931,6 +3931,19 @@ sub process { · 3930 unmodified lines | ||
| 3931 | 3931 | } |
| 3932 | 3932 | } |
| 3933 | 3933 | |
| 3934 | +# don't use __constant_<foo> functions outside of include/uapi/ | |
| 3935 | + if ($realfile !~ m@^include/uapi/@ && | |
| 3936 | + $line =~ /(__constant_(?:htons|ntohs|[bl]e(?:16|32|64)_to_cpu|cpu_to_[bl]e(?:16|32|64)))\s*\(/) { | |
| 3937 | + my $constant_func = $1; | |
| 3938 | + my $func = $constant_func; | |
| 3939 | + $func =~ s/^__constant_//; | |
| 3940 | + if (WARN("CONSTANT_CONVERSION", | |
| 3941 | + "$constant_func should be $func\n" . $herecurr) && | |
| 3942 | + $fix) { | |
| 3943 | + $fixed[$linenr - 1] =~ s/\b$constant_func\b/$func/g; | |
| 3944 | + } | |
| 3945 | + } | |
| 3946 | + | |
| 3934 | 3947 | # prefer usleep_range over udelay |
| 3935 | 3948 | if ($line =~ /\budelay\s*\(\s*(\d+)\s*\)/) { |
| 3936 | 3949 | my $delay = $1; |