From: Andi Kleen <a...@linux.intel.com>

Check for const __devinitdata and non const __devinitconst

People get this regularly wrong and it breaks the LTO builds,
as it causes a section attribute conflict.

This doesn't catch all mistakes -- spreading over multiple lines,
getting const pointers wrong, but hopefully the common ones.

Signed-off-by: Andi Kleen <a...@linux.intel.com>
---
 scripts/checkpatch.pl | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 2ee9eb7..5d68d9c 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2676,6 +2676,15 @@ sub process {
                        }
                }
 
+# check for __devinitdata with const or const without __devintconst
+# XXX should scan multiple lines and handle misplaced consts for pointers
+               if ($line =~ /const/ && $line =~ /__(dev)?initdata/) {
+                   ERROR("DEVINITCONST", "const init definition must use 
__devinitconst");
+               }
+               if ($line =~ /__(dev)?initconst/ && $line !~ /\Wconst\W/) {
+                   ERROR("DEVINITCONST", "__devinitconst must have have const 
definition");
+               }
+
 # check for spacing round square brackets; allowed:
 #  1. with a type on the left -- int [] a;
 #  2. at the beginning of a line for slice initialisers -- [0...10] = 5,
-- 
1.8.3.1

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