linux-kernel - [PATCH 2/6] drm/msm/dpu: Remove unnecessary NULL checks

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Message-Id: <20191206161137.2.I3e20091f213b47dfa888bc2f528509d84d19c743@changeid>
Date:   Fri,  6 Dec 2019 16:13:44 -0700
From:   Drew Davenport <ddavenport@...omium.org>
To:     dri-devel@...ts.freedesktop.org
Cc:     Drew Davenport <ddavenport@...omium.org>,
        Sean Paul <sean@...rly.run>, 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>,
        freedreno@...ts.freedesktop.org, Daniel Vetter <daniel@...ll.ch>
Subject: [PATCH 2/6] drm/msm/dpu: Remove unnecessary NULL checks

dpu_crtc_mixer.lm_ctl will never be NULL, so don't bother checking

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

 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index f197dce54576..b9ed8285ab39 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -197,8 +197,8 @@ static void _dpu_crtc_blend_setup(struct drm_crtc *crtc)
 	DPU_DEBUG("%s\n", dpu_crtc->name);
 
 	for (i = 0; i < cstate->num_mixers; i++) {
-		if (!mixer[i].hw_lm || !mixer[i].lm_ctl) {
-			DPU_ERROR("invalid lm or ctl assigned to mixer\n");
+		if (!mixer[i].hw_lm) {
+			DPU_ERROR("invalid lm assigned to mixer\n");
 			return;
 		}
 		mixer[i].mixer_op_mode = 0;
@@ -1115,8 +1115,6 @@ static int _dpu_debugfs_status_show(struct seq_file *s, void *data)
 		m = &cstate->mixers[i];
 		if (!m->hw_lm)
 			seq_printf(s, "\tmixer[%d] has no lm\n", i);
-		else if (!m->lm_ctl)
-			seq_printf(s, "\tmixer[%d] has no ctl\n", i);
 		else
 			seq_printf(s, "\tmixer:%d ctl:%d width:%d height:%d\n",
 				m->hw_lm->idx - LM_0, m->lm_ctl->idx - CTL_0,
-- 
2.21.0