On Tue, 14 Nov 2023 at 15:28, Dipam Turkar <dipamt1729@xxxxxxxxx> wrote:
>
> Make msm use drm_gem_create_map_offset() instead of its custom
> implementation for associating GEM object with a fake offset. Since,
> we already have this generic implementation, we don't need the custom
> implementation and it is better to standardize the code for GEM based drivers.
>
> Signed-off-by: Dipam Turkar <dipamt1729@xxxxxxxxx>
> ---
> drivers/gpu/drm/msm/msm_drv.c | 2 +-
> drivers/gpu/drm/msm/msm_gem.c | 21 ---------------------
> drivers/gpu/drm/msm/msm_gem.h | 2 --
> 3 files changed, 1 insertion(+), 24 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
> index a428951ee539..86a15992c717 100644
> --- a/drivers/gpu/drm/msm/msm_drv.c
> +++ b/drivers/gpu/drm/msm/msm_drv.c
> @@ -1085,7 +1085,7 @@ static const struct drm_driver msm_driver = {
> .open = msm_open,
> .postclose = msm_postclose,
> .dumb_create = msm_gem_dumb_create,
> - .dumb_map_offset = msm_gem_dumb_map_offset,
> + .dumb_map_offset = drm_gem_dumb_map_offset,
> .gem_prime_import_sg_table = msm_gem_prime_import_sg_table,
> #ifdef CONFIG_DEBUG_FS
> .debugfs_init = msm_debugfs_init,
> diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
> index db1e748daa75..489694ef79cb 100644
> --- a/drivers/gpu/drm/msm/msm_gem.c
> +++ b/drivers/gpu/drm/msm/msm_gem.c
> @@ -671,27 +671,6 @@ int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
> MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb");
> }
>
> -int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
> - uint32_t handle, uint64_t *offset)
> -{
> - struct drm_gem_object *obj;
> - int ret = 0;
> -
> - /* GEM does all our handle to object mapping */
> - obj = drm_gem_object_lookup(file, handle);
> - if (obj == NULL) {
> - ret = -ENOENT;
> - goto fail;
> - }
> -
> - *offset = msm_gem_mmap_offset(obj);
msm_gem_mmap_offset internally has locking around
drm_gem_create_mmap_offset() / drm_vma_node_offset_addr() calls, while
drm_gem_dumb_map_offset() does not. Thus this patch does more than is
stated in the commit message.
> -
> - drm_gem_object_put(obj);
> -
> -fail:
> - return ret;
> -}
> -
> static void *get_vaddr(struct drm_gem_object *obj, unsigned madv)
> {
> struct msm_gem_object *msm_obj = to_msm_bo(obj);
> diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h
> index 8ddef5443140..dc74a0ef865d 100644
> --- a/drivers/gpu/drm/msm/msm_gem.h
> +++ b/drivers/gpu/drm/msm/msm_gem.h
> @@ -139,8 +139,6 @@ struct page **msm_gem_pin_pages(struct drm_gem_object *obj);
> void msm_gem_unpin_pages(struct drm_gem_object *obj);
> int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
> struct drm_mode_create_dumb *args);
> -int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
> - uint32_t handle, uint64_t *offset);
> void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj);
> void *msm_gem_get_vaddr(struct drm_gem_object *obj);
> void *msm_gem_get_vaddr_active(struct drm_gem_object *obj);
> --
> 2.34.1
>
--
With best wishes
Dmitry
