[PATCH 1/1] checkpatch script: add Blackfin checks for HI/LO and SSYNC/CSYNC macros

[Bryan Wu <cooloney@kernel.org>]

From: Mike Frysinger <vapier.adi@gmail.com>

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
---
 scripts/checkpatch.pl |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index bc67793..eb764b0 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1200,6 +1200,18 @@ sub process {
 			WARN("adding a line without newline at end of file\n" . $herecurr);
 		}
 
+# Blackfin: use hi/lo macros
+		if ($realfile =~ m@arch/blackfin/.*\.S$@) {
+			if ($line =~ /\.[lL][[:space:]]*=.*&[[:space:]]*0x[fF][fF][fF][fF]/) {
+				my $herevet = "$here\n" . cat_vet($line) . "\n";
+				ERROR("use the LO() macro, not (... & 0xFFFF)\n" . $herevet);
+			}
+			if ($line =~ /\.[hH][[:space:]]*=.*>>[[:space:]]*16/) {
+				my $herevet = "$here\n" . cat_vet($line) . "\n";
+				ERROR("use the HI() macro, not (... >> 16)\n" . $herevet);
+			}
+		}
+
 # check we are in a valid source file *.[hc] if not then ignore this hunk
 		next if ($realfile !~ /\.[hc]$/);
 
@@ -1216,6 +1228,16 @@ sub process {
 			WARN("CVS style keyword markers, these will _not_ be updated\n". $herecurr);
 		}
 
+# Blackfin: don't use __builtin_bfin_[cs]sync
+		if ($line =~ /__builtin_bfin_csync/) {
+			my $herevet = "$here\n" . cat_vet($line) . "\n";
+			ERROR("use the CSYNC() macro in asm/blackfin.h\n" . $herevet);
+		}
+		if ($line =~ /__builtin_bfin_ssync/) {
+			my $herevet = "$here\n" . cat_vet($line) . "\n";
+			ERROR("use the SSYNC() macro in asm/blackfin.h\n" . $herevet);
+		}
+
 # Check for potential 'bare' types
 		my ($stat, $cond, $line_nr_next, $remain_next);
 		if ($realcnt && $line =~ /.\s*\S/) {
-- 
1.5.6