[igt-dev] [PATCH i-g-t] i915/intel_memory_region: Add missing forward declaration

[Janusz Krzysztofik]

Intel memory region header declares some functions with a pointer to a
structure defined elsewhere as one of their arguments.  Forward declare
that structure to avoid compiler warnings.

../lib/i915/intel_memory_region.h:69:19: warning: ‘struct drm_i915_gem_memory_class_instance’ declared inside parameter list will not be visible outside of this definition or declaration
   69 |            struct drm_i915_gem_memory_class_instance *mem_regions,
      |                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../lib/i915/intel_memory_region.h:73:15: warning: ‘struct drm_i915_gem_memory_class_instance’ declared inside parameter list will not be visible outside of this definition or declaration
   73 |        struct drm_i915_gem_memory_class_instance *mem_regions,
      |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik at linux.intel.com>
---
 lib/i915/intel_memory_region.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/i915/intel_memory_region.h b/lib/i915/intel_memory_region.h
index e9d1d66d4..8cd18ea0e 100644
--- a/lib/i915/intel_memory_region.h
+++ b/lib/i915/intel_memory_region.h
@@ -62,6 +62,8 @@ uint8_t gem_get_lmem_region_count(int fd);
 
 bool gem_has_lmem(int fd);
 
+struct drm_i915_gem_memory_class_instance;
+
 int __gem_create_in_memory_region_list(int fd, uint32_t *handle, uint64_t size,
 				       struct drm_i915_gem_memory_class_instance *mem_regions,
 				       int num_regions);
-- 
2.25.1