On 06/12/2013 06:16 AM, Joonyoung Shim wrote:
This adds to call low-level mmap() from prime helpers.
Signed-off-by: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
---
drivers/gpu/drm/drm_prime.c | 5 ++++-
include/drm/drmP.h | 2 ++
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index d92853e..3a008b2 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -165,7 +165,10 @@ static void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf,
static int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf,
struct vm_area_struct *vma)
{
- return -EINVAL;
+ struct drm_gem_object *obj = dma_buf->priv;
+ struct drm_device *dev = obj->dev;
+
+ return dev->driver->gem_prime_mmap(obj, vma);
Won't this crash if the driver doesn't fill in the new field and
userspace tries to map it?
}
static const struct dma_buf_ops drm_gem_prime_dmabuf_ops = {
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 82670ac..12083dc 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -937,6 +937,8 @@ struct drm_driver {
struct sg_table *sgt);
void *(*gem_prime_vmap)(struct drm_gem_object *obj);
void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr);
+ int (*gem_prime_mmap)(struct drm_gem_object *obj,
+ struct vm_area_struct *vma);
/* vga arb irq handler */
void (*vgaarb_irq)(struct drm_device *dev, bool state);
--
Aaron
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