[PATCH 1/3] drm: arcpgu: Fix mmap() callback

[Jose Abreu]

Now that ARC properly supports DMA mmap() we can use the standard
CMA helper to map dumb buffers. This makes ARC PGU works with
standard DRM consumer applications like, for example, mpv/mplayer
via DRM. While at it, use the DEFINE_DRM_GEM_CMA_FOPS() helper.

This fixes the use of dumb buffers.

Signed-off-by: Jose Abreu <joabreu@xxxxxxxxxxxx>
Fixes: 0c4250e7b15e ("drm: Add support of ARC PGU display controller")
Cc: Carlos Palminha <palminha@xxxxxxxxxxxx>
Cc: Alexey Brodkin <abrodkin@xxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: Dave Airlie <airlied@xxxxxxxxx>
---
 drivers/gpu/drm/arc/arcpgu_drv.c | 24 +-----------------------
 1 file changed, 1 insertion(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/arc/arcpgu_drv.c b/drivers/gpu/drm/arc/arcpgu_drv.c
index 3e43a5d..20ab68f 100644
--- a/drivers/gpu/drm/arc/arcpgu_drv.c
+++ b/drivers/gpu/drm/arc/arcpgu_drv.c
@@ -48,29 +48,7 @@ static void arcpgu_setup_mode_config(struct drm_device *drm)
 	drm->mode_config.funcs = &arcpgu_drm_modecfg_funcs;
 }
 
-static int arcpgu_gem_mmap(struct file *filp, struct vm_area_struct *vma)
-{
-	int ret;
-
-	ret = drm_gem_mmap(filp, vma);
-	if (ret)
-		return ret;
-
-	vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags));
-	return 0;
-}
-
-static const struct file_operations arcpgu_drm_ops = {
-	.owner = THIS_MODULE,
-	.open = drm_open,
-	.release = drm_release,
-	.unlocked_ioctl = drm_ioctl,
-	.compat_ioctl = drm_compat_ioctl,
-	.poll = drm_poll,
-	.read = drm_read,
-	.llseek = no_llseek,
-	.mmap = arcpgu_gem_mmap,
-};
+DEFINE_DRM_GEM_CMA_FOPS(arcpgu_drm_ops);
 
 static void arcpgu_lastclose(struct drm_device *drm)
 {
-- 
1.9.1