scripts/dtc: dtx_diff - 2nd update of include dts paths to match build

Update dtx_diff include paths in the same manner as:
commit b12869a8d519 ("of: remove drivers/of/testcase-data from
include search path for CPP"), commit 5ffa2aed389c ("of: remove
arch/$(SRCARCH)/boot/dts from include search path for CPP"), and
commit 50f9ddaf64e1 ("of: search scripts/dtc/include-prefixes path
for both CPP and DTC").

Remove proposed include path kernel/dts/, which was never implemented
for the dtb build.

For the diff case, each source file is compiled separately.  For
each of those compiles, provide the location of the source file
as an include path, not the location of both source files.

Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>

1 files changed, 9 insertions, 13 deletions

diff --git a/scripts/dtc/dtx_diff b/scripts/dtc/dtx_diff
index f9a3d8d23c64..8c4fbad2055e 100755
--- a/scripts/dtc/dtx_diff
+++ b/scripts/dtc/dtx_diff
@@ -86,6 +86,7 @@ eod
 compile_to_dts() {
 
         dtx="$1"
+        dtc_include="$2"
 
         if [ -d "${dtx}" ] ; then
 
@@ -113,7 +114,7 @@ compile_to_dts() {
                 # -----  input is DTS (source)
 
                 if ( cpp ${cpp_flags} -x assembler-with-cpp ${dtx} \
-                        | ${DTC} -I dts ) ; then
+                        | ${DTC} ${dtc_include} -I dts ) ; then
                         return
                 fi
 
@@ -320,18 +321,13 @@ fi
 
 cpp_flags="\
         -nostdinc                                  \
-        -I${srctree}/arch/${ARCH}/boot/dts         \
         -I${srctree}/scripts/dtc/include-prefixes  \
-        -I${srctree}/drivers/of/testcase-data      \
         -undef -D__DTS__"
 
-dtc_flags="\
-        -i ${srctree}/arch/${ARCH}/boot/dts/ \
-        -i ${srctree}/kernel/dts             \
-        ${dtx_path_1_dtc_include}            \
-        ${dtx_path_2_dtc_include}"
-
-DTC="${DTC} ${dtc_flags} -O dts -qq -f ${dtc_sort} -o -"
+DTC="\
+        ${DTC}                                     \
+        -i ${srctree}/scripts/dtc/include-prefixes \
+        -O dts -qq -f ${dtc_sort} -o -"
 
 
 # -----  do the diff or decompile
@@ -339,11 +335,11 @@ DTC="${DTC} ${dtc_flags} -O dts -qq -f ${dtc_sort} -o -"
 if (( ${cmd_diff} )) ; then
 
         diff ${diff_flags} --label "${dtx_file_1}" --label "${dtx_file_2}" \
-                <(compile_to_dts "${dtx_file_1}") \
-                <(compile_to_dts "${dtx_file_2}")
+                <(compile_to_dts "${dtx_file_1}" "${dtx_path_1_dtc_include}") \
+                <(compile_to_dts "${dtx_file_2}" "${dtx_path_2_dtc_include}")
 
 else
 
-        compile_to_dts "${dtx_file_1}"
+        compile_to_dts "${dtx_file_1}" "${dtx_path_1_dtc_include}"
 
 fi