Subject: [PATCH 1/2] drm/rockchip: create the fake mmap offset during gem creation

From: [email-masked] (Heiko Stuebner)
Date: Tue, 10 Nov 2015 07:46:16 +0100

Hi Mark,

Am Dienstag, 10. November 2015, 14:17:43 schrieb Mark yao:
> Hi Heiko
>       I don't think this patch is needed for rockchip drm, since 
> rockchip drm only use kms.
> I saw the discussion about ("drm/exynos: create a fake mmap offset with 
> gem creation"),
> Inki said that: "This patch makes drm_gem_create_mmap_offset to be 
> called even in case of
> not using dumb* interfaces. I.e., exynos_drm_gem_create_ioctl -> 
> exynos_drm_gem_mmap"
> 
> So I think this patch doesn't make sense for rockchip drm.

ok :-) . I'm not that knowledgable when it comes to drm and just found that 
similar change in exynos while searching for the dma issue.

So we can drop this patch and you could just merge patch2 as well as

	[RESEND PATCH] drm/rockchip: vop: Correct enabled clocks during setup

from Sjoerd and send these two to Dave as fixes for 4.4?

Thanks
Heiko

> 
> 
> On 2015?11?10? 03:50, Heiko Stuebner wrote:
> > Similarly to the equivalent exynos-fix in commit 48cf53f4343a
> > ("drm/exynos: create a fake mmap offset with gem creation") the rockchip
> > drm driver also calls the drm_gem_create_mmap_offset fake-offset creation
> > on every invocation of rockchip_gem_dumb_map_offset.
> >
> > Move that to the creation of the gem to only create that offset once.
> >
> > Signed-off-by: Heiko Stuebner <[email-masked]>
> > ---
> >   drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 12 ++++++------
> >   1 file changed, 6 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c 
b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
> > index 4ab2f20..e50d113 100644
> > --- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
> > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
> > @@ -126,8 +126,14 @@ struct rockchip_gem_object *
> >   	if (ret)
> >   		goto err_free_rk_obj;
> >   
> > +	ret = drm_gem_create_mmap_offset(obj);
> > +	if (ret)
> > +		goto err_free_buf;
> > +
> >   	return rk_obj;
> >   
> > +err_free_buf:
> > +	rockchip_gem_free_buf(rk_obj);
> >   err_free_rk_obj:
> >   	kfree(rk_obj);
> >   	return ERR_PTR(ret);
> > @@ -196,7 +202,6 @@ int rockchip_gem_dumb_map_offset(struct drm_file 
*file_priv,
> >   				 uint64_t *offset)
> >   {
> >   	struct drm_gem_object *obj;
> > -	int ret;
> >   
> >   	obj = drm_gem_object_lookup(dev, file_priv, handle);
> >   	if (!obj) {
> > @@ -204,14 +209,9 @@ int rockchip_gem_dumb_map_offset(struct drm_file 
*file_priv,
> >   		return -EINVAL;
> >   	}
> >   
> > -	ret = drm_gem_create_mmap_offset(obj);
> > -	if (ret)
> > -		goto out;
> > -
> >   	*offset = drm_vma_node_offset_addr(&obj->vma_node);
> >   	DRM_DEBUG_KMS("offset = 0x%llx\n", *offset);
> >   
> > -out:
> >   	drm_gem_object_unreference_unlocked(obj);
> >   
> >   	return 0;
> 
> 
>