linux-kernel - [PATCH] drm: Use IS_ERR() instead of IS_ERR_OR

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Date:   Fri,  6 Nov 2020 10:45:12 +0800
From:   Wang Qing <wangqing@...o.com>
To:     Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        Jonathan Marek <jonathan@...ek.ca>,
        Akhil P Oommen <akhilpo@...eaurora.org>,
        Sharat Masetty <smasetty@...eaurora.org>,
        Wang Qing <wangqing@...o.com>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drm: Use IS_ERR() instead of IS_ERR_OR_NULL()

dev_pm_opp_find_freq_exact never return null but ERR_PTR(),so we
should use IS_ERR() to clarify and avoid compilation warnings.

Signed-off-by: Wang Qing <wangqing@...o.com>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 8c81a89..6247397 100755
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -851,7 +851,7 @@ static void a6xx_gmu_set_initial_freq(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
 	unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index];
 
 	gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true);
-	if (IS_ERR_OR_NULL(gpu_opp))
+	if (IS_ERR(gpu_opp))
 		return;
 
 	gmu->freq = 0; /* so a6xx_gmu_set_freq() doesn't exit early */
@@ -865,7 +865,7 @@ static void a6xx_gmu_set_initial_bw(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
 	unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index];
 
 	gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true);
-	if (IS_ERR_OR_NULL(gpu_opp))
+	if (IS_ERR(gpu_opp))
 		return;
 
 	dev_pm_opp_set_bw(&gpu->pdev->dev, gpu_opp);
-- 
2.7.4