From: Tomasz Figa <tfiga@chromium.org>
Date: Mon, 23 Apr 2018 12:50:03 +0200
Subject: drm/rockchip: psr: Remove flush by CRTC
Git-commit: 98bd0331d13f68c4719499c47f023d583121f847
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

It is not used anymore after last changes and it was not even correct to
begin with as it assumed a 1:1 relation between a CRTC and encoder,
while in fact a CRTC can be attached to multiple encoders.

Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180423105003.9004-28-enric.balletbo@collabora.com

Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/rockchip/rockchip_drm_psr.c |   35 ----------------------------
 drivers/gpu/drm/rockchip/rockchip_drm_psr.h |    1 
 2 files changed, 36 deletions(-)

--- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
@@ -33,23 +33,6 @@ struct psr_drv {
 	int (*set)(struct drm_encoder *encoder, bool enable);
 };
 
-static struct psr_drv *find_psr_by_crtc(struct drm_crtc *crtc)
-{
-	struct rockchip_drm_private *drm_drv = crtc->dev->dev_private;
-	struct psr_drv *psr;
-
-	mutex_lock(&drm_drv->psr_list_lock);
-	list_for_each_entry(psr, &drm_drv->psr_list, list) {
-		if (psr->encoder->crtc == crtc)
-			goto out;
-	}
-	psr = ERR_PTR(-ENODEV);
-
-out:
-	mutex_unlock(&drm_drv->psr_list_lock);
-	return psr;
-}
-
 static struct psr_drv *find_psr_by_encoder(struct drm_encoder *encoder)
 {
 	struct rockchip_drm_private *drm_drv = encoder->dev->dev_private;
@@ -167,24 +150,6 @@ static void rockchip_drm_do_flush(struct
 }
 
 /**
- * rockchip_drm_psr_flush - flush a single pipe
- * @crtc: CRTC of the pipe to flush
- *
- * Returns:
- * 0 on success, -errno on fail
- */
-int rockchip_drm_psr_flush(struct drm_crtc *crtc)
-{
-	struct psr_drv *psr = find_psr_by_crtc(crtc);
-	if (IS_ERR(psr))
-		return PTR_ERR(psr);
-
-	rockchip_drm_do_flush(psr);
-	return 0;
-}
-EXPORT_SYMBOL(rockchip_drm_psr_flush);
-
-/**
  * rockchip_drm_psr_flush_all - force to flush all registered PSR encoders
  * @dev: drm device
  *
--- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.h
@@ -16,7 +16,6 @@
 #define __ROCKCHIP_DRM_PSR___
 
 void rockchip_drm_psr_flush_all(struct drm_device *dev);
-int rockchip_drm_psr_flush(struct drm_crtc *crtc);
 
 int rockchip_drm_psr_inhibit_put(struct drm_encoder *encoder);
 int rockchip_drm_psr_inhibit_get(struct drm_encoder *encoder);