linux-kernel - [PATCH 4/6] drm/msm/dpu: Remove unnecessary NULL checks

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Date:   Fri,  6 Sep 2019 13:23:42 -0600
From:   Drew Davenport <ddavenport@...omium.org>
To:     dri-devel@...ts.freedesktop.org
Cc:     Drew Davenport <ddavenport@...omium.org>,
        Sean Paul <sean@...rly.run>,
        Jayant Shekhar <jshekhar@...eaurora.org>,
        Bruce Wang <bzwang@...omium.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jeykumar Sankaran <jsanka@...eaurora.org>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        Rob Clark <robdclark@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sravanthi Kollukuduru <skolluku@...eaurora.org>,
        freedreno@...ts.freedesktop.org, Daniel Vetter <daniel@...ll.ch>
Subject: [PATCH 4/6] drm/msm/dpu: Remove unnecessary NULL checks

drm_crtc.dev will never be NULL, so no need to check it.

Signed-off-by: Drew Davenport <ddavenport@...omium.org>
---

 drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c | 5 -----
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c      | 6 +++---
 2 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
index 094d74635fb7..839887a3a80c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
@@ -33,11 +33,6 @@ static struct dpu_kms *_dpu_crtc_get_kms(struct drm_crtc *crtc)
 {
 	struct msm_drm_private *priv;
 
-	if (!crtc->dev) {
-		DPU_ERROR("invalid device\n");
-		return NULL;
-	}
-
 	priv = crtc->dev->dev_private;
 	if (!priv->kms) {
 		DPU_ERROR("invalid kms\n");
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index ead7d657097c..0b9dc042d2e2 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -266,7 +266,7 @@ enum dpu_intf_mode dpu_crtc_get_intf_mode(struct drm_crtc *crtc)
 {
 	struct drm_encoder *encoder;
 
-	if (!crtc || !crtc->dev) {
+	if (!crtc) {
 		DPU_ERROR("invalid crtc\n");
 		return INTF_MODE_NONE;
 	}
@@ -694,7 +694,7 @@ static void dpu_crtc_disable(struct drm_crtc *crtc,
 	unsigned long flags;
 	bool release_bandwidth = false;
 
-	if (!crtc || !crtc->dev || !crtc->state) {
+	if (!crtc || !crtc->state) {
 		DPU_ERROR("invalid crtc\n");
 		return;
 	}
@@ -766,7 +766,7 @@ static void dpu_crtc_enable(struct drm_crtc *crtc,
 	struct msm_drm_private *priv;
 	bool request_bandwidth;
 
-	if (!crtc || !crtc->dev) {
+	if (!crtc) {
 		DPU_ERROR("invalid crtc\n");
 		return;
 	}
-- 
2.20.1