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Subject[PATCH] drm/msm/disp/dpu1/dpu_encoder: Drop unnecessary NULL checks after container_of
Date
The result of container_of() operations is never NULL unless the embedded
element is the first element of the structure. This is not the case here.
The NULL checks on the result of container_of() are therefore unnecessary
and misleading. Remove them.

This change was made automatically with the following Coccinelle script.

@@
type t;
identifier v;
statement s;
@@

<+...
(
t v = container_of(...);
|
v = container_of(...);
)
...
when != v
- if (\( !v \| v == NULL \) ) s
...+>

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 10 ----------
1 file changed, 10 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 8d942052db8a..a573fe211375 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -1453,11 +1453,6 @@ static void dpu_encoder_off_work(struct work_struct *work)
struct dpu_encoder_virt *dpu_enc = container_of(work,
struct dpu_encoder_virt, delayed_off_work.work);

- if (!dpu_enc) {
- DPU_ERROR("invalid dpu encoder\n");
- return;
- }
-
dpu_encoder_resource_control(&dpu_enc->base,
DPU_ENC_RC_EVENT_ENTER_IDLE);

@@ -1797,11 +1792,6 @@ static void dpu_encoder_vsync_event_work_handler(struct kthread_work *work)
struct dpu_encoder_virt, vsync_event_work);
ktime_t wakeup_time;

- if (!dpu_enc) {
- DPU_ERROR("invalid dpu encoder\n");
- return;
- }
-
if (dpu_encoder_vsync_time(&dpu_enc->base, &wakeup_time))
return;

--
2.25.1
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