gpu: nvgpu: include makefiles conditionally

Include chip specific makefiles, only if they are present
in current source tree.

Bug 1757988

Change-Id: I60a468bce6e0d20459aa643ccbce9bacbcd163bf
Signed-off-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: http://git-master/r/1154761
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/Makefile b/drivers/gpu/nvgpu/Makefile
index f7bbd744..13a35f76 100644
--- a/drivers/gpu/nvgpu/Makefile
+++ b/drivers/gpu/nvgpu/Makefile
@@ -112,9 +112,13 @@ nvgpu-$(CONFIG_GK20A_CYCLE_STATS) += \
         gk20a/css_gr_gk20a.o
 
 ifeq ($(CONFIG_ARCH_TEGRA_18x_SOC),y)
-include ../nvgpu-t18x/drivers/gpu/nvgpu/Makefile
+ifneq ($(wildcard $(srctree)/../nvgpu-t18x/drivers/gpu/nvgpu/Makefile),)
+include $(srctree)/../nvgpu-t18x/drivers/gpu/nvgpu/Makefile
+endif
 endif
 
 ifeq ($(CONFIG_ARCH_TEGRA_19x_SOC),y)
-include ../nvgpu-t19x/drivers/gpu/nvgpu/Makefile
+ifneq ($(wildcard $(srctree)/../nvgpu-t19x/drivers/gpu/nvgpu/Makefile),)
+include $(srctree)/../nvgpu-t19x/drivers/gpu/nvgpu/Makefile
+endif
 endif