[PATCH 02/41] drm/rockchip: Get rid of some unnecessary code

[heiko@sntech.de (Heiko Stuebner)]

Am Donnerstag, 9. M?rz 2017, 23:32:17 CET schrieb Sean Paul:
> From: Tomasz Figa <tfiga@chromium.org>
> 
> Current code implements prepare_fb and cleanup_fb callbacks only to
> grab/release fb references, which is already done by atomic framework
> when creating/destryoing plane state. Also there are some unused fields
> vop and vop_win structs. Let's remove these unused bits.
> 
> Signed-off-by: Tomasz Figa <tfiga@chromium.org>
> Signed-off-by: Sean Paul <seanpaul@chromium.org>

There seems to be a slight discrepancy between patch message and code.
The commit message talks about *_fb-callbacks, while the patch removes
a seemingly unsused mutex, which I guess falls under the "some unused fields"
part.

In any case, I didn't see any ill effects when testing this patch, so
Tested-by: Heiko Stuebner <heiko@sntech.de>

> ---
>  drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> index 2151e1cee4b4..0539afb6b7c8 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> @@ -108,9 +108,6 @@ struct vop {
>  	struct drm_device *drm_dev;
>  	bool is_enabled;
>  
> -	/* mutex vsync_ work */
> -	struct mutex vsync_mutex;
> -	bool vsync_work_pending;
>  	struct completion dsp_hold_completion;
>  
>  	/* protected by dev->event_lock */
> @@ -1592,8 +1589,6 @@ static int vop_bind(struct device *dev, struct device *master, void *data)
>  	spin_lock_init(&vop->reg_lock);
>  	spin_lock_init(&vop->irq_lock);
>  
> -	mutex_init(&vop->vsync_mutex);
> -
>  	ret = devm_request_irq(dev, vop->irq, vop_isr,
>  			       IRQF_SHARED, dev_name(dev), vop);
>  	if (ret)
>