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Message-Id: <20220426132126.686447-1-wanjiabing@vivo.com>
Date: Tue, 26 Apr 2022 21:21:26 +0800
From: Wan Jiabing <wanjiabing@...o.com>
To: Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
Abhinav Kumar <quic_abhinavk@...cinc.com>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>, linux-arm-msm@...r.kernel.org,
dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Cc: Wan Jiabing <wanjiabing@...o.com>
Subject: [PATCH] drm/msm: Use div64_ul instead of do_div
Fix following coccicheck warning:
drivers/gpu/drm/msm/msm_gpu_devfreq.c:72:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead.
Use div64_ul instead of do_div to avoid a possible truncation.
Signed-off-by: Wan Jiabing <wanjiabing@...o.com>
---
drivers/gpu/drm/msm/msm_gpu_devfreq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/msm_gpu_devfreq.c b/drivers/gpu/drm/msm/msm_gpu_devfreq.c
index d2539ca78c29..c2ea978c8921 100644
--- a/drivers/gpu/drm/msm/msm_gpu_devfreq.c
+++ b/drivers/gpu/drm/msm/msm_gpu_devfreq.c
@@ -69,7 +69,7 @@ static void get_raw_dev_status(struct msm_gpu *gpu,
df->time = time;
busy_time *= USEC_PER_SEC;
- do_div(busy_time, sample_rate);
+ busy_time = div64_ul(busy_time, sample_rate);
if (WARN_ON(busy_time > ~0LU))
busy_time = ~0LU;
--
2.35.3
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