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Subject[PATCH] drm/msm/dpu: Fix compile warnings
Date
Using the following command will get compile warnings:
make W=1 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.o ARCH=arm64

drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c: In function
‘_dpu_crtc_program_lm_output_roi’:
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:91:19: warning: variable
‘dpu_crtc’ set but not used [-Wunused-but-set-variable]
struct dpu_crtc *dpu_crtc;
^~~~~~~~
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c: In function
‘dpu_crtc_atomic_begin’:
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:428:35: warning: variable
‘smmu_state’ set but not used [-Wunused-but-set-variable]
struct dpu_crtc_smmu_state_data *smmu_state;
^~~~~~~~~~
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c: In function
‘dpu_crtc_atomic_flush’:
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:489:25: warning: variable
‘event_thread’ set but not used [-Wunused-but-set-variable]
struct msm_drm_thread *event_thread;
^~~~~~~~~~~~
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c: In function
‘dpu_crtc_destroy_state’:
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:565:19: warning: variable
‘dpu_crtc’ set but not used [-Wunused-but-set-variable]
struct dpu_crtc *dpu_crtc;
^~~~~~~~
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c: In function
‘dpu_crtc_duplicate_state’:
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:664:19: warning: variable
‘dpu_crtc’ set but not used [-Wunused-but-set-variable]
struct dpu_crtc *dpu_crtc;
^~~~~~~~
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c: In function
‘dpu_crtc_disable’:
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:693:26: warning: variable
‘priv’ set but not used [-Wunused-but-set-variable]
struct msm_drm_private *priv;
^~~~
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:691:27: warning: variable
‘mode’ set but not used [-Wunused-but-set-variable]
struct drm_display_mode *mode;
^~~~
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c: In function ‘dpu_crtc_enable’:
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:766:26: warning: variable
‘priv’ set but not used [-Wunused-but-set-variable]
struct msm_drm_private *priv;
^~~~
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c: In function ‘dpu_crtc_init’:
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:1292:18: warning: variable
‘kms’ set but not used [-Wunused-but-set-variable]
struct dpu_kms *kms = NULL;
^~~
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:663: warning: Excess function
parameter 'Returns' description in 'dpu_crtc_duplicate_state'

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Hongbo Yao <yaohongbo@huawei.com>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 23 -----------------------
1 file changed, 23 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index ce59adff06aa..00bf35d2ef24 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -88,11 +88,9 @@ static void _dpu_crtc_setup_blend_cfg(struct dpu_crtc_mixer *mixer,

static void _dpu_crtc_program_lm_output_roi(struct drm_crtc *crtc)
{
- struct dpu_crtc *dpu_crtc;
struct dpu_crtc_state *crtc_state;
int lm_idx, lm_horiz_position;

- dpu_crtc = to_dpu_crtc(crtc);
crtc_state = to_dpu_crtc_state(crtc->state);

lm_horiz_position = 0;
@@ -425,7 +423,6 @@ static void dpu_crtc_atomic_begin(struct drm_crtc *crtc,
struct drm_encoder *encoder;
struct drm_device *dev;
unsigned long flags;
- struct dpu_crtc_smmu_state_data *smmu_state;

if (!crtc) {
DPU_ERROR("invalid crtc\n");
@@ -443,7 +440,6 @@ static void dpu_crtc_atomic_begin(struct drm_crtc *crtc,
dpu_crtc = to_dpu_crtc(crtc);
cstate = to_dpu_crtc_state(crtc->state);
dev = crtc->dev;
- smmu_state = &dpu_crtc->smmu_state;

_dpu_crtc_setup_lm_bounds(crtc, crtc->state);

@@ -486,7 +482,6 @@ static void dpu_crtc_atomic_flush(struct drm_crtc *crtc,
struct drm_device *dev;
struct drm_plane *plane;
struct msm_drm_private *priv;
- struct msm_drm_thread *event_thread;
unsigned long flags;
struct dpu_crtc_state *cstate;

@@ -508,8 +503,6 @@ static void dpu_crtc_atomic_flush(struct drm_crtc *crtc,
return;
}

- event_thread = &priv->event_thread[crtc->index];
-
if (dpu_crtc->event) {
DPU_DEBUG("already received dpu_crtc->event\n");
} else {
@@ -562,7 +555,6 @@ static void dpu_crtc_atomic_flush(struct drm_crtc *crtc,
static void dpu_crtc_destroy_state(struct drm_crtc *crtc,
struct drm_crtc_state *state)
{
- struct dpu_crtc *dpu_crtc;
struct dpu_crtc_state *cstate;

if (!crtc || !state) {
@@ -570,7 +562,6 @@ static void dpu_crtc_destroy_state(struct drm_crtc *crtc,
return;
}

- dpu_crtc = to_dpu_crtc(crtc);
cstate = to_dpu_crtc_state(state);

DPU_DEBUG("crtc%d\n", crtc->base.id);
@@ -657,11 +648,9 @@ static void dpu_crtc_reset(struct drm_crtc *crtc)
/**
* dpu_crtc_duplicate_state - state duplicate hook
* @crtc: Pointer to drm crtc structure
- * @Returns: Pointer to new drm_crtc_state structure
*/
static struct drm_crtc_state *dpu_crtc_duplicate_state(struct drm_crtc *crtc)
{
- struct dpu_crtc *dpu_crtc;
struct dpu_crtc_state *cstate, *old_cstate;

if (!crtc || !crtc->state) {
@@ -669,7 +658,6 @@ static struct drm_crtc_state *dpu_crtc_duplicate_state(struct drm_crtc *crtc)
return NULL;
}

- dpu_crtc = to_dpu_crtc(crtc);
old_cstate = to_dpu_crtc_state(crtc->state);
cstate = kmemdup(old_cstate, sizeof(*old_cstate), GFP_KERNEL);
if (!cstate) {
@@ -688,9 +676,7 @@ static void dpu_crtc_disable(struct drm_crtc *crtc,
{
struct dpu_crtc *dpu_crtc;
struct dpu_crtc_state *cstate;
- struct drm_display_mode *mode;
struct drm_encoder *encoder;
- struct msm_drm_private *priv;
unsigned long flags;
bool release_bandwidth = false;

@@ -700,8 +686,6 @@ static void dpu_crtc_disable(struct drm_crtc *crtc,
}
dpu_crtc = to_dpu_crtc(crtc);
cstate = to_dpu_crtc_state(crtc->state);
- mode = &cstate->base.adjusted_mode;
- priv = crtc->dev->dev_private;

DRM_DEBUG_KMS("crtc%d\n", crtc->base.id);

@@ -763,14 +747,12 @@ static void dpu_crtc_enable(struct drm_crtc *crtc,
{
struct dpu_crtc *dpu_crtc;
struct drm_encoder *encoder;
- struct msm_drm_private *priv;
bool request_bandwidth;

if (!crtc || !crtc->dev || !crtc->dev->dev_private) {
DPU_ERROR("invalid crtc\n");
return;
}
- priv = crtc->dev->dev_private;

pm_runtime_get_sync(crtc->dev->dev);

@@ -1288,13 +1270,8 @@ struct drm_crtc *dpu_crtc_init(struct drm_device *dev, struct drm_plane *plane,
{
struct drm_crtc *crtc = NULL;
struct dpu_crtc *dpu_crtc = NULL;
- struct msm_drm_private *priv = NULL;
- struct dpu_kms *kms = NULL;
int i;

- priv = dev->dev_private;
- kms = to_dpu_kms(priv->kms);
-
dpu_crtc = kzalloc(sizeof(*dpu_crtc), GFP_KERNEL);
if (!dpu_crtc)
return ERR_PTR(-ENOMEM);
--
2.20.1
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