This patchset improves gem and dma-buf codes of exynos drm.

Major changes:

- remove needless using sg table. - use prime helpers instead of exynos specific dma-buf functions. - merge struct exynos_drm_gem_buf in struct exynos_drm_gem. - remove simple functions. - cleanup.

Thanks.

Joonyoung Shim (14): drm/exynos: stop using sgtable in page fault handler drm/exynos: remove function convert_to_vm_err_msg drm/exynos: remove mutex locking in pagefault handler drm/exynos: remove function exynos_drm_gem_map_buf drm/exynos: stop copying sg table drm/exynos: remove unused fields of struct exynos_drm_gem_buf drm/exynos: use ERR_PTR instead of NULL in exynos_drm_gem_init drm/exynos: create a fake mmap offset with gem creation drm/exynos: remove call to drm_gem_free_mmap_offset() drm/exynos: remove function check_gem_flags drm/exynos: remove function update_vm_cache_attr drm/exynos: remove function roundup_gem_size drm/exynos: use prime helpers drm/exynos: merge exynos_drm_buf.c to exynos_drm_gem.c

drivers/gpu/drm/exynos/Makefile | 3 +- drivers/gpu/drm/exynos/exynos_drm_buf.c | 186 --------------- drivers/gpu/drm/exynos/exynos_drm_buf.h | 33 --- drivers/gpu/drm/exynos/exynos_drm_dmabuf.c | 286 ---------------------- drivers/gpu/drm/exynos/exynos_drm_dmabuf.h | 20 -- drivers/gpu/drm/exynos/exynos_drm_drv.c | 9 +- drivers/gpu/drm/exynos/exynos_drm_fb.c | 14 +- drivers/gpu/drm/exynos/exynos_drm_fb.h | 4 +- drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 30 ++- drivers/gpu/drm/exynos/exynos_drm_gem.c | 365 +++++++++++++++++------------ drivers/gpu/drm/exynos/exynos_drm_gem.h | 58 ++--- drivers/gpu/drm/exynos/exynos_drm_plane.c | 10 +- 12 files changed, 277 insertions(+), 741 deletions(-) delete mode 100644 drivers/gpu/drm/exynos/exynos_drm_buf.c delete mode 100644 drivers/gpu/drm/exynos/exynos_drm_buf.h delete mode 100644 drivers/gpu/drm/exynos/exynos_drm_dmabuf.c delete mode 100644 drivers/gpu/drm/exynos/exynos_drm_dmabuf.h