[Intel-wired-lan] [PATCH net v2] i40e/iavf: use better trace path

[Jesse Brandeburg <jesse.brandeburg@intel.com>]

I'm seeing compilation fail of the i40e/iavf driver for some reason.
I just checked 5.5-rc4 and the tip of net/net-next and all fail.
Fails all the way back to v5.1 at least, I didn't check further back.

repro steps:
$ gcc -v
gcc version 9.2.1 20190827 (Red Hat 9.2.1-1) (GCC)

$ git checkout -b my-net davem-net/master
$ make mrproper
$ make O=../my-net.obj defconfig allmodconfig modules_prepare
$ make O=../my-net.obj M=drivers/net/ethernet/intel/i40e

make[1]: Entering directory '/home/jbrandeb/git/my-net.obj'
  CC [M]  drivers/net/ethernet/intel/i40e/i40e_main.o
In file included from
/home/jbrandeb/git/linux2/drivers/net/ethernet/intel/i40e/i40e_trace.h:209,
                 from /home/jbrandeb/git/linux2/drivers/net/ethernet/intel/i40e/i40e_main.c:20:
/home/jbrandeb/git/linux2/include/trace/define_trace.h:95:42: fatal error: ./i40e_trace.h: No such file or directory
   95 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
      |                                          ^
compilation terminated.
make[2]: *** [/home/jbrandeb/git/linux2/scripts/Makefile.build:266: drivers/net/ethernet/intel/i40e/i40e_main.o] Error 1
make[1]: *** [/home/jbrandeb/git/linux2/Makefile:1693: drivers/net/ethernet/intel/i40e] Error 2
make[1]: Leaving directory '/home/jbrandeb/git/my-net.obj'
make: *** [Makefile:179: sub-make] Error 2

Just for sanity, I tried building the ice driver the same as above and
it succeeds, so the build does work for some drivers.

So fix the include path for the i40e driver trace file to be relative
to the kernel root like (some) other drivers do.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>

---
v2: added iavf for the same fix
---
 drivers/net/ethernet/intel/i40e/i40e_trace.h | 2 +-
 drivers/net/ethernet/intel/iavf/iavf_trace.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_trace.h b/drivers/net/ethernet/intel/i40e/i40e_trace.h
index 424f02077e2e..122a3fcb62b1 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_trace.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_trace.h
@@ -203,7 +203,7 @@ DEFINE_EVENT(
  * module.
  */
 #undef TRACE_INCLUDE_PATH
-#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_PATH ../../drivers/net/ethernet/intel/i40e
 #undef TRACE_INCLUDE_FILE
 #define TRACE_INCLUDE_FILE i40e_trace
 #include <trace/define_trace.h>
diff --git a/drivers/net/ethernet/intel/iavf/iavf_trace.h b/drivers/net/ethernet/intel/iavf/iavf_trace.h
index 1058e68a02b4..b2674c935c21 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_trace.h
+++ b/drivers/net/ethernet/intel/iavf/iavf_trace.h
@@ -203,7 +203,7 @@ DEFINE_EVENT(
  * module.
  */
 #undef TRACE_INCLUDE_PATH
-#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_PATH ../../drivers/net/ethernet/intel/iavf
 #undef TRACE_INCLUDE_FILE
 #define TRACE_INCLUDE_FILE iavf_trace
 #include <trace/define_trace.h>
-- 
2.24.1