minigbm: add a default (*bo_unmap) implementation
The (*bo_unmap) function is responsible for unmapping the buffer
and cleaning up any data allocated during (*bo_map). Previously,
we called munmap in drv_bo_unmap(), which caused some confusion.
This method is cleaner.
BUG=chromium:764871
TEST=emerge-betty minigbm
Change-Id: I4dc20cd6b15e79bce21d33f03ebc84480c582981
Reviewed-on: https://chromium-review.googlesource.com/671693
Commit-Ready: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Joe Kniss <djmk@google.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
diff --git a/helpers.h b/helpers.h
index dc1a7c0..b580643 100644
--- a/helpers.h
+++ b/helpers.h
@@ -17,6 +17,7 @@
int drv_gem_bo_destroy(struct bo *bo);
int drv_prime_bo_import(struct bo *bo, struct drv_import_fd_data *data);
void *drv_dumb_bo_map(struct bo *bo, struct map_info *data, size_t plane, int prot);
+int drv_bo_munmap(struct bo *bo, struct map_info *data);
uintptr_t drv_get_reference_count(struct driver *drv, struct bo *bo, size_t plane);
void drv_increment_reference_count(struct driver *drv, struct bo *bo, size_t plane);
void drv_decrement_reference_count(struct driver *drv, struct bo *bo, size_t plane);