Devicetree bindings should be their own patch as documented in Documentation/devicetree/bindings/submitting-patches.txt section I.1. This is because bindings are logically independent from a driver implementation, they have a different maintainer (even though they often are applied via the same tree), and it makes for a cleaner history in the DT only tree created with git-filter-branch.
Cc: Andy Whitcroft <[email protected]> Cc: Joe Perches <[email protected]> Signed-off-by: Rob Herring <[email protected]> --- v2: - Add doc pointer to warning - Simplify logic Joe, this makes $is_binding_patch an empty value when the regex doesn't match rather than 0 which would be more logical IMO. It seems to work fine, but I'm not sure if there's a better way to do it. scripts/checkpatch.pl | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index a9c05506e325..f9aba4bc41ce 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -2236,6 +2236,7 @@ sub process { our $clean = 1; my $signoff = 0; my $is_patch = 0; + my $is_binding_patch = -1; my $in_header_lines = $file ? 0 : 1; my $in_commit_log = 0; #Scanning lines before patch my $has_commit_log = 0; #Encountered lines before patch @@ -2485,6 +2486,19 @@ sub process { $check = $check_orig; } $checklicenseline = 1; + + if ($realfile !~ /^MAINTAINERS/) { + my $last_binding_patch = $is_binding_patch; + + $is_binding_patch = ($realfile =~ m@^(?:Documentation/devicetree/|include/dt-bindings/)@); + + if (($last_binding_patch != -1) && + ($last_binding_patch ^ $is_binding_patch)) { + WARN("DT_SPLIT_BINDING_PATCH", + "DT binding docs and includes should be a separate patch. See: Documentation/devicetree/bindings/submitting-patches.txt"); + } + } + next; } -- 2.17.1
