diff options
| author | Boris Brezillon <boris.brezillon@collabora.com> | 2025-12-09 18:11:51 +0100 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@collabora.com> | 2025-12-10 14:51:26 +0100 |
| commit | ad9f266be8b2db26c7cc754d401278959bb7895c (patch) | |
| tree | 1f55500e64870ddf32918bd33e848903d0431b84 | |
| parent | 22ba3bb3ff2a8e5a509bfa13f3e362d0d36083fd (diff) | |
drm/gem: Fix builds with CONFIG_MMU=n
drm_gem_get_unmapped_area() relies on mm_get_unmapped_area() which is
only available if CONFIG_MMU=y.
Fixes: 99bda20d6d4c ("drm/gem: Introduce drm_gem_get_unmapped_area() fop")
Cc: Loïc Molinari <loic.molinari@collabora.com>
Reviewed-by: Loïc Molinari <loic.molinari@collabora.com>
Link: https://patch.msgid.link/20251209171151.2449120-1-boris.brezillon@collabora.com
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
| -rw-r--r-- | drivers/gpu/drm/drm_gem.c | 2 | ||||
| -rw-r--r-- | include/drm/drm_gem.h | 5 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c index 6021c4087a08..ca1956608261 100644 --- a/drivers/gpu/drm/drm_gem.c +++ b/drivers/gpu/drm/drm_gem.c @@ -1267,6 +1267,7 @@ drm_gem_object_lookup_at_offset(struct file *filp, unsigned long start, return obj; } +#ifdef CONFIG_MMU /** * drm_gem_get_unmapped_area - get memory mapping region routine for GEM objects * @filp: DRM file pointer @@ -1309,6 +1310,7 @@ unsigned long drm_gem_get_unmapped_area(struct file *filp, unsigned long uaddr, return ret; } EXPORT_SYMBOL_GPL(drm_gem_get_unmapped_area); +#endif /** * drm_gem_mmap - memory map routine for GEM objects diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h index cca815dc87f3..f4da8ed0d630 100644 --- a/include/drm/drm_gem.h +++ b/include/drm/drm_gem.h @@ -537,9 +537,14 @@ void drm_gem_vm_close(struct vm_area_struct *vma); int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, struct vm_area_struct *vma); int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); + +#ifdef CONFIG_MMU unsigned long drm_gem_get_unmapped_area(struct file *filp, unsigned long uaddr, unsigned long len, unsigned long pgoff, unsigned long flags); +#else +#define drm_gem_get_unmapped_area NULL +#endif /** * drm_gem_object_get - acquire a GEM buffer object reference |