There should be VM_MIXEDMAP, not VM_PFNMAP, because udl_gem_fault() inserts pages via vm_insert_page(). Other drm/gem drivers already do this.
Signed-off-by: Konstantin Khlebnikov khlebnikov@openvz.org Cc: Dave Airlie airlied@redhat.com Cc: dri-devel@lists.freedesktop.org --- drivers/gpu/drm/udl/udl_drv.c | 2 +- drivers/gpu/drm/udl/udl_drv.h | 1 + drivers/gpu/drm/udl/udl_gem.c | 14 ++++++++++++++ 3 files changed, 16 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index 5340c5f..5367390 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -47,7 +47,7 @@ static struct vm_operations_struct udl_gem_vm_ops = { static const struct file_operations udl_driver_fops = { .owner = THIS_MODULE, .open = drm_open, - .mmap = drm_gem_mmap, + .mmap = udl_drm_gem_mmap, .poll = drm_poll, .read = drm_read, .unlocked_ioctl = drm_ioctl, diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h index 1612954..96820d0 100644 --- a/drivers/gpu/drm/udl/udl_drv.h +++ b/drivers/gpu/drm/udl/udl_drv.h @@ -121,6 +121,7 @@ struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
int udl_gem_vmap(struct udl_gem_object *obj); void udl_gem_vunmap(struct udl_gem_object *obj); +int udl_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); int udl_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
int udl_handle_damage(struct udl_framebuffer *fb, int x, int y, diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c index 852642d..92f19ef 100644 --- a/drivers/gpu/drm/udl/udl_gem.c +++ b/drivers/gpu/drm/udl/udl_gem.c @@ -71,6 +71,20 @@ int udl_dumb_destroy(struct drm_file *file, struct drm_device *dev, return drm_gem_handle_delete(file, handle); }
+int udl_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) +{ + int ret; + + ret = drm_gem_mmap(filp, vma); + if (ret) + return ret; + + vma->vm_flags &= ~VM_PFNMAP; + vma->vm_flags |= VM_MIXEDMAP; + + return ret; +} + int udl_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { struct udl_gem_object *obj = to_udl_bo(vma->vm_private_data);