From: Arnd Bergmann <arnd@arndb.de>
Date: Mon, 26 Feb 2018 10:49:26 +0100
Subject: drm/msm: fix building without debugfs
Git-commit: 288e5c8898c488298c39ff4bbf58928d30fbf99f
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

The adreno driver stopped building when CONFIG_DEBUGFS is disabled:

drivers/gpu/drm/msm/adreno/adreno_device.c: In function 'adreno_load_gpu':
drivers/gpu/drm/msm/adreno/adreno_device.c:153:16: error: 'const struct msm_gpu_funcs' has no member named 'debugfs_init'
  if (gpu->funcs->debugfs_init) {
                ^~
drivers/gpu/drm/msm/adreno/adreno_device.c:154:13: error: 'const struct msm_gpu_funcs' has no member named 'debugfs_init'
   gpu->funcs->debugfs_init(gpu, dev->primary);
             ^~

This adds an #ifdef around the code that references the hidden
pointer.

Fixes: 331dc0bc195b ("drm/msm: add a5xx specific debugfs")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/msm/adreno/adreno_device.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -164,11 +164,13 @@ struct msm_gpu *adreno_load_gpu(struct d
 		return NULL;
 	}
 
+#ifdef CONFIG_DEBUG_FS
 	if (gpu->funcs->debugfs_init) {
 		gpu->funcs->debugfs_init(gpu, dev->primary);
 		gpu->funcs->debugfs_init(gpu, dev->render);
 		gpu->funcs->debugfs_init(gpu, dev->control);
 	}
+#endif
 
 	return gpu;
 }