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Subject[PATCH 5/6] drm/msm/dpu: Remove unnecessary NULL checks
Date
msm_drm_private.kms will only be NULL in the dummy headless case, so
there is no need to check it in the dpu display driver.

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

drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c | 23 ++++++++-----------
drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c | 12 +++-------
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 14 ++---------
.../drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 2 +-
.../drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 2 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 5 +---
drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c | 6 +----
7 files changed, 19 insertions(+), 45 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
index 17f917b718ce..a53517abf15c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
@@ -55,8 +55,7 @@ static void dpu_core_irq_callback_handler(void *arg, int irq_idx)
int dpu_core_irq_idx_lookup(struct dpu_kms *dpu_kms,
enum dpu_intr_type intr_type, u32 instance_idx)
{
- if (!dpu_kms || !dpu_kms->hw_intr ||
- !dpu_kms->hw_intr->ops.irq_idx_lookup)
+ if (!dpu_kms->hw_intr || !dpu_kms->hw_intr->ops.irq_idx_lookup)
return -EINVAL;

return dpu_kms->hw_intr->ops.irq_idx_lookup(intr_type,
@@ -73,7 +72,7 @@ static int _dpu_core_irq_enable(struct dpu_kms *dpu_kms, int irq_idx)
unsigned long irq_flags;
int ret = 0, enable_count;

- if (!dpu_kms || !dpu_kms->hw_intr ||
+ if (!dpu_kms->hw_intr ||
!dpu_kms->irq_obj.enable_counts ||
!dpu_kms->irq_obj.irq_counts) {
DPU_ERROR("invalid params\n");
@@ -114,7 +113,7 @@ int dpu_core_irq_enable(struct dpu_kms *dpu_kms, int *irq_idxs, u32 irq_count)
{
int i, ret = 0, counts;

- if (!dpu_kms || !irq_idxs || !irq_count) {
+ if (!irq_idxs || !irq_count) {
DPU_ERROR("invalid params\n");
return -EINVAL;
}
@@ -138,7 +137,7 @@ static int _dpu_core_irq_disable(struct dpu_kms *dpu_kms, int irq_idx)
{
int ret = 0, enable_count;

- if (!dpu_kms || !dpu_kms->hw_intr || !dpu_kms->irq_obj.enable_counts) {
+ if (!dpu_kms->hw_intr || !dpu_kms->irq_obj.enable_counts) {
DPU_ERROR("invalid params\n");
return -EINVAL;
}
@@ -169,7 +168,7 @@ int dpu_core_irq_disable(struct dpu_kms *dpu_kms, int *irq_idxs, u32 irq_count)
{
int i, ret = 0, counts;

- if (!dpu_kms || !irq_idxs || !irq_count) {
+ if (!irq_idxs || !irq_count) {
DPU_ERROR("invalid params\n");
return -EINVAL;
}
@@ -186,7 +185,7 @@ int dpu_core_irq_disable(struct dpu_kms *dpu_kms, int *irq_idxs, u32 irq_count)

u32 dpu_core_irq_read(struct dpu_kms *dpu_kms, int irq_idx, bool clear)
{
- if (!dpu_kms || !dpu_kms->hw_intr ||
+ if (!dpu_kms->hw_intr ||
!dpu_kms->hw_intr->ops.get_interrupt_status)
return 0;

@@ -205,7 +204,7 @@ int dpu_core_irq_register_callback(struct dpu_kms *dpu_kms, int irq_idx,
{
unsigned long irq_flags;

- if (!dpu_kms || !dpu_kms->irq_obj.irq_cb_tbl) {
+ if (!dpu_kms->irq_obj.irq_cb_tbl) {
DPU_ERROR("invalid params\n");
return -EINVAL;
}
@@ -240,7 +239,7 @@ int dpu_core_irq_unregister_callback(struct dpu_kms *dpu_kms, int irq_idx,
{
unsigned long irq_flags;

- if (!dpu_kms || !dpu_kms->irq_obj.irq_cb_tbl) {
+ if (!dpu_kms->irq_obj.irq_cb_tbl) {
DPU_ERROR("invalid params\n");
return -EINVAL;
}
@@ -274,8 +273,7 @@ int dpu_core_irq_unregister_callback(struct dpu_kms *dpu_kms, int irq_idx,

static void dpu_clear_all_irqs(struct dpu_kms *dpu_kms)
{
- if (!dpu_kms || !dpu_kms->hw_intr ||
- !dpu_kms->hw_intr->ops.clear_all_irqs)
+ if (!dpu_kms->hw_intr || !dpu_kms->hw_intr->ops.clear_all_irqs)
return;

dpu_kms->hw_intr->ops.clear_all_irqs(dpu_kms->hw_intr);
@@ -283,8 +281,7 @@ static void dpu_clear_all_irqs(struct dpu_kms *dpu_kms)

static void dpu_disable_all_irqs(struct dpu_kms *dpu_kms)
{
- if (!dpu_kms || !dpu_kms->hw_intr ||
- !dpu_kms->hw_intr->ops.disable_all_irqs)
+ if (!dpu_kms->hw_intr || !dpu_kms->hw_intr->ops.disable_all_irqs)
return;

dpu_kms->hw_intr->ops.disable_all_irqs(dpu_kms->hw_intr);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
index 839887a3a80c..e96843010dff 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
@@ -32,13 +32,7 @@ enum dpu_perf_mode {
static struct dpu_kms *_dpu_crtc_get_kms(struct drm_crtc *crtc)
{
struct msm_drm_private *priv;
-
priv = crtc->dev->dev_private;
- if (!priv->kms) {
- DPU_ERROR("invalid kms\n");
- return NULL;
- }
-
return to_dpu_kms(priv->kms);
}

@@ -111,7 +105,7 @@ int dpu_core_perf_crtc_check(struct drm_crtc *crtc,
}

kms = _dpu_crtc_get_kms(crtc);
- if (!kms || !kms->catalog) {
+ if (!kms->catalog) {
DPU_ERROR("invalid parameters\n");
return 0;
}
@@ -219,7 +213,7 @@ void dpu_core_perf_crtc_release_bw(struct drm_crtc *crtc)
}

kms = _dpu_crtc_get_kms(crtc);
- if (!kms || !kms->catalog) {
+ if (!kms->catalog) {
DPU_ERROR("invalid kms\n");
return;
}
@@ -292,7 +286,7 @@ int dpu_core_perf_crtc_update(struct drm_crtc *crtc,
}

kms = _dpu_crtc_get_kms(crtc);
- if (!kms || !kms->catalog) {
+ if (!kms->catalog) {
DPU_ERROR("invalid kms\n");
return -EINVAL;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 7b37d1eeeab5..85e7bacbce42 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -645,11 +645,6 @@ static void _dpu_encoder_update_vsync_source(struct dpu_encoder_virt *dpu_enc,
priv = drm_enc->dev->dev_private;

dpu_kms = to_dpu_kms(priv->kms);
- if (!dpu_kms) {
- DPU_ERROR("invalid dpu_kms\n");
- return;
- }
-
hw_mdptop = dpu_kms->hw_mdp;
if (!hw_mdptop) {
DPU_ERROR("invalid mdptop\n");
@@ -1098,10 +1093,6 @@ static void _dpu_encoder_virt_enable_helper(struct drm_encoder *drm_enc)

priv = drm_enc->dev->dev_private;
dpu_kms = to_dpu_kms(priv->kms);
- if (!dpu_kms) {
- DPU_ERROR("invalid dpu_kms\n");
- return;
- }

dpu_enc = to_dpu_encoder_virt(drm_enc);
if (!dpu_enc || !dpu_enc->cur_master) {
@@ -2032,9 +2023,8 @@ static int dpu_encoder_setup_display(struct dpu_encoder_virt *dpu_enc,
enum dpu_intf_type intf_type;
struct dpu_enc_phys_init_params phys_params;

- if (!dpu_enc || !dpu_kms) {
- DPU_ERROR("invalid arg(s), enc %d kms %d\n",
- dpu_enc != 0, dpu_kms != 0);
+ if (!dpu_enc) {
+ DPU_ERROR("invalid arg(s), enc %d\n", dpu_enc != 0);
return -EINVAL;
}

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
index 50fe1ed7095c..39fc39cd2439 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
@@ -373,7 +373,7 @@ static void dpu_encoder_phys_cmd_tearcheck_config(
}

dpu_kms = phys_enc->dpu_kms;
- if (!dpu_kms || !dpu_kms->dev) {
+ if (!dpu_kms->dev) {
DPU_ERROR("invalid device\n");
return;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
index bd333d957add..15d21d7ec304 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
@@ -374,7 +374,7 @@ static void dpu_encoder_phys_vid_mode_set(
struct drm_display_mode *mode,
struct drm_display_mode *adj_mode)
{
- if (!phys_enc || !phys_enc->dpu_kms) {
+ if (!phys_enc) {
DPU_ERROR("invalid encoder/kms\n");
return;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 4a69d8ecf5e1..9d6429fa6229 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -461,10 +461,7 @@ static void _dpu_kms_drm_obj_destroy(struct dpu_kms *dpu_kms)
struct msm_drm_private *priv;
int i;

- if (!dpu_kms) {
- DPU_ERROR("invalid dpu_kms\n");
- return;
- } else if (!dpu_kms->dev) {
+ if (!dpu_kms->dev) {
DPU_ERROR("invalid dev\n");
return;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
index 8d24b79fd400..991f4c8f8a12 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
@@ -154,10 +154,6 @@ void dpu_vbif_set_ot_limit(struct dpu_kms *dpu_kms,
u32 ot_lim;
int ret, i;

- if (!dpu_kms) {
- DPU_ERROR("invalid arguments\n");
- return;
- }
mdp = dpu_kms->hw_mdp;

for (i = 0; i < ARRAY_SIZE(dpu_kms->hw_vbif); i++) {
@@ -214,7 +210,7 @@ void dpu_vbif_set_qos_remap(struct dpu_kms *dpu_kms,
const struct dpu_vbif_qos_tbl *qos_tbl;
int i;

- if (!dpu_kms || !params || !dpu_kms->hw_mdp) {
+ if (!params || !dpu_kms->hw_mdp) {
DPU_ERROR("invalid arguments\n");
return;
}
--
2.20.1
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