gpu: nvgpu: Fix build failure in allocator.h

Fix a build failure caused by missing definition for struct device.
Instead of including device.h wrap the debugfs init function with
CONFIG_DEBUG_FS and forward declare struct device. We don't use any
struct device internals here so we only need to let the compiler
know that this type does exist.

Bug 200310575

Change-Id: I1ae45a8f191d920d9b606fefd5029fad84869cff
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1486012
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c b/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c
index a3c4e3b6..211b353b 100644
--- a/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c
+++ b/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c
@@ -201,9 +201,9 @@ void nvgpu_fini_alloc_debug(struct nvgpu_allocator *a)
 #endif
 }
 
+#ifdef CONFIG_DEBUG_FS
 void nvgpu_alloc_debugfs_init(struct device *dev)
 {
-#ifdef CONFIG_DEBUG_FS
         struct gk20a_platform *platform = dev_get_drvdata(dev);
         struct dentry *gpu_root = platform->debugfs;
         struct gk20a *g = get_gk20a(dev);
@@ -214,5 +214,5 @@ void nvgpu_alloc_debugfs_init(struct device *dev)
 
         debugfs_create_u32("tracing", 0664, g->debugfs_allocators,
                            &nvgpu_alloc_tracing_on);
-#endif
 }
+#endif