[PATCH 06/11] drm/msm/dpu: Cleanup callers of dpu_hw_blk_init
Jordan Crouse
jcrouse at codeaurora.org
Mon Nov 5 23:30:58 UTC 2018
Outside of superfluous parameter checks the dpu_hw_blk_init()
doesn't have any failure paths. Switch it over to be a void
function and we can remove error handling paths in all the functions
that call it. While we're in those functions remove unneeded
initialization for a static variable.
v2: Removed a cleanup intended for a different patch
Signed-off-by: Jordan Crouse <jcrouse at codeaurora.org>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c | 10 +---------
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h | 2 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 17 ++---------------
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c | 17 ++---------------
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_lm.c | 17 ++---------------
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c | 17 ++---------------
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c | 17 ++---------------
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c | 17 ++---------------
8 files changed, 14 insertions(+), 100 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c
index 58d29e43faef..92f1c4241b9a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c
@@ -30,16 +30,10 @@ static LIST_HEAD(dpu_hw_blk_list);
* @type: hw block type - enum dpu_hw_blk_type
* @id: instance id of the hw block
* @ops: Pointer to block operations
- * return: 0 if success; error code otherwise
*/
-int dpu_hw_blk_init(struct dpu_hw_blk *hw_blk, u32 type, int id,
+void dpu_hw_blk_init(struct dpu_hw_blk *hw_blk, u32 type, int id,
struct dpu_hw_blk_ops *ops)
{
- if (!hw_blk) {
- pr_err("invalid parameters\n");
- return -EINVAL;
- }
-
INIT_LIST_HEAD(&hw_blk->list);
hw_blk->type = type;
hw_blk->id = id;
@@ -51,8 +45,6 @@ int dpu_hw_blk_init(struct dpu_hw_blk *hw_blk, u32 type, int id,
mutex_lock(&dpu_hw_blk_lock);
list_add(&hw_blk->list, &dpu_hw_blk_list);
mutex_unlock(&dpu_hw_blk_lock);
-
- return 0;
}
/**
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h
index 0f4ca8af1ec5..1934c2f7e8fa 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h
@@ -44,7 +44,7 @@ struct dpu_hw_blk {
struct dpu_hw_blk_ops ops;
};
-int dpu_hw_blk_init(struct dpu_hw_blk *hw_blk, u32 type, int id,
+void dpu_hw_blk_init(struct dpu_hw_blk *hw_blk, u32 type, int id,
struct dpu_hw_blk_ops *ops);
void dpu_hw_blk_destroy(struct dpu_hw_blk *hw_blk);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
index 4aab04335c6d..1068b4b7940f 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
@@ -483,10 +483,7 @@ static void _setup_ctl_ops(struct dpu_hw_ctl_ops *ops,
ops->get_bitmask_intf = dpu_hw_ctl_get_bitmask_intf;
};
-static struct dpu_hw_blk_ops dpu_hw_ops = {
- .start = NULL,
- .stop = NULL,
-};
+static struct dpu_hw_blk_ops dpu_hw_ops;
struct dpu_hw_ctl *dpu_hw_ctl_init(enum dpu_ctl idx,
void __iomem *addr,
@@ -494,7 +491,6 @@ struct dpu_hw_ctl *dpu_hw_ctl_init(enum dpu_ctl idx,
{
struct dpu_hw_ctl *c;
struct dpu_ctl_cfg *cfg;
- int rc;
c = kzalloc(sizeof(*c), GFP_KERNEL);
if (!c)
@@ -513,18 +509,9 @@ struct dpu_hw_ctl *dpu_hw_ctl_init(enum dpu_ctl idx,
c->mixer_count = m->mixer_count;
c->mixer_hw_caps = m->mixer;
- rc = dpu_hw_blk_init(&c->base, DPU_HW_BLK_CTL, idx, &dpu_hw_ops);
- if (rc) {
- DPU_ERROR("failed to init hw blk %d\n", rc);
- goto blk_init_error;
- }
+ dpu_hw_blk_init(&c->base, DPU_HW_BLK_CTL, idx, &dpu_hw_ops);
return c;
-
-blk_init_error:
- kzfree(c);
-
- return ERR_PTR(rc);
}
void dpu_hw_ctl_destroy(struct dpu_hw_ctl *ctx)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
index 695d27a730e8..f6a83daa385b 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
@@ -264,10 +264,7 @@ static void _setup_intf_ops(struct dpu_hw_intf_ops *ops,
ops->get_line_count = dpu_hw_intf_get_line_count;
}
-static struct dpu_hw_blk_ops dpu_hw_ops = {
- .start = NULL,
- .stop = NULL,
-};
+static struct dpu_hw_blk_ops dpu_hw_ops;
struct dpu_hw_intf *dpu_hw_intf_init(enum dpu_intf idx,
void __iomem *addr,
@@ -275,7 +272,6 @@ struct dpu_hw_intf *dpu_hw_intf_init(enum dpu_intf idx,
{
struct dpu_hw_intf *c;
struct dpu_intf_cfg *cfg;
- int rc;
c = kzalloc(sizeof(*c), GFP_KERNEL);
if (!c)
@@ -296,18 +292,9 @@ struct dpu_hw_intf *dpu_hw_intf_init(enum dpu_intf idx,
c->mdss = m;
_setup_intf_ops(&c->ops, c->cap->features);
- rc = dpu_hw_blk_init(&c->base, DPU_HW_BLK_INTF, idx, &dpu_hw_ops);
- if (rc) {
- DPU_ERROR("failed to init hw blk %d\n", rc);
- goto blk_init_error;
- }
+ dpu_hw_blk_init(&c->base, DPU_HW_BLK_INTF, idx, &dpu_hw_ops);
return c;
-
-blk_init_error:
- kzfree(c);
-
- return ERR_PTR(rc);
}
void dpu_hw_intf_destroy(struct dpu_hw_intf *intf)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_lm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_lm.c
index c76b5cc949fb..9f342af2aba7 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_lm.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_lm.c
@@ -175,10 +175,7 @@ static void _setup_mixer_ops(struct dpu_mdss_cfg *m,
ops->setup_gc = dpu_hw_lm_gc;
};
-static struct dpu_hw_blk_ops dpu_hw_ops = {
- .start = NULL,
- .stop = NULL,
-};
+static struct dpu_hw_blk_ops dpu_hw_ops;
struct dpu_hw_mixer *dpu_hw_lm_init(enum dpu_lm idx,
void __iomem *addr,
@@ -186,7 +183,6 @@ struct dpu_hw_mixer *dpu_hw_lm_init(enum dpu_lm idx,
{
struct dpu_hw_mixer *c;
struct dpu_lm_cfg *cfg;
- int rc;
c = kzalloc(sizeof(*c), GFP_KERNEL);
if (!c)
@@ -203,18 +199,9 @@ struct dpu_hw_mixer *dpu_hw_lm_init(enum dpu_lm idx,
c->cap = cfg;
_setup_mixer_ops(m, &c->ops, c->cap->features);
- rc = dpu_hw_blk_init(&c->base, DPU_HW_BLK_LM, idx, &dpu_hw_ops);
- if (rc) {
- DPU_ERROR("failed to init hw blk %d\n", rc);
- goto blk_init_error;
- }
+ dpu_hw_blk_init(&c->base, DPU_HW_BLK_LM, idx, &dpu_hw_ops);
return c;
-
-blk_init_error:
- kzfree(c);
-
- return ERR_PTR(rc);
}
void dpu_hw_lm_destroy(struct dpu_hw_mixer *lm)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
index cfc93816078f..3bdf47ed1845 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
@@ -199,10 +199,7 @@ static void _setup_pingpong_ops(struct dpu_hw_pingpong_ops *ops,
ops->get_line_count = dpu_hw_pp_get_line_count;
};
-static struct dpu_hw_blk_ops dpu_hw_ops = {
- .start = NULL,
- .stop = NULL,
-};
+static struct dpu_hw_blk_ops dpu_hw_ops;
struct dpu_hw_pingpong *dpu_hw_pingpong_init(enum dpu_pingpong idx,
void __iomem *addr,
@@ -210,7 +207,6 @@ struct dpu_hw_pingpong *dpu_hw_pingpong_init(enum dpu_pingpong idx,
{
struct dpu_hw_pingpong *c;
struct dpu_pingpong_cfg *cfg;
- int rc;
c = kzalloc(sizeof(*c), GFP_KERNEL);
if (!c)
@@ -226,18 +222,9 @@ struct dpu_hw_pingpong *dpu_hw_pingpong_init(enum dpu_pingpong idx,
c->caps = cfg;
_setup_pingpong_ops(&c->ops, c->caps);
- rc = dpu_hw_blk_init(&c->base, DPU_HW_BLK_PINGPONG, idx, &dpu_hw_ops);
- if (rc) {
- DPU_ERROR("failed to init hw blk %d\n", rc);
- goto blk_init_error;
- }
+ dpu_hw_blk_init(&c->base, DPU_HW_BLK_PINGPONG, idx, &dpu_hw_ops);
return c;
-
-blk_init_error:
- kzfree(c);
-
- return ERR_PTR(rc);
}
void dpu_hw_pingpong_destroy(struct dpu_hw_pingpong *pp)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
index 8297963d2c4c..3ebdf292d8f2 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
@@ -696,10 +696,7 @@ static struct dpu_sspp_cfg *_sspp_offset(enum dpu_sspp sspp,
return ERR_PTR(-ENOMEM);
}
-static struct dpu_hw_blk_ops dpu_hw_ops = {
- .start = NULL,
- .stop = NULL,
-};
+static struct dpu_hw_blk_ops dpu_hw_ops;
struct dpu_hw_pipe *dpu_hw_sspp_init(enum dpu_sspp idx,
void __iomem *addr, struct dpu_mdss_cfg *catalog,
@@ -707,7 +704,6 @@ struct dpu_hw_pipe *dpu_hw_sspp_init(enum dpu_sspp idx,
{
struct dpu_hw_pipe *hw_pipe;
struct dpu_sspp_cfg *cfg;
- int rc;
if (!addr || !catalog)
return ERR_PTR(-EINVAL);
@@ -729,18 +725,9 @@ struct dpu_hw_pipe *dpu_hw_sspp_init(enum dpu_sspp idx,
hw_pipe->cap = cfg;
_setup_layer_ops(hw_pipe, hw_pipe->cap->features);
- rc = dpu_hw_blk_init(&hw_pipe->base, DPU_HW_BLK_SSPP, idx, &dpu_hw_ops);
- if (rc) {
- DPU_ERROR("failed to init hw blk %d\n", rc);
- goto blk_init_error;
- }
+ dpu_hw_blk_init(&hw_pipe->base, DPU_HW_BLK_SSPP, idx, &dpu_hw_ops);
return hw_pipe;
-
-blk_init_error:
- kzfree(hw_pipe);
-
- return ERR_PTR(rc);
}
void dpu_hw_sspp_destroy(struct dpu_hw_pipe *ctx)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
index f7e0f661a8bb..a041597bb849 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
@@ -321,10 +321,7 @@ static const struct dpu_mdp_cfg *_top_offset(enum dpu_mdp mdp,
return ERR_PTR(-EINVAL);
}
-static struct dpu_hw_blk_ops dpu_hw_ops = {
- .start = NULL,
- .stop = NULL,
-};
+static struct dpu_hw_blk_ops dpu_hw_ops;
struct dpu_hw_mdp *dpu_hw_mdptop_init(enum dpu_mdp idx,
void __iomem *addr,
@@ -332,7 +329,6 @@ struct dpu_hw_mdp *dpu_hw_mdptop_init(enum dpu_mdp idx,
{
struct dpu_hw_mdp *mdp;
const struct dpu_mdp_cfg *cfg;
- int rc;
if (!addr || !m)
return ERR_PTR(-EINVAL);
@@ -354,18 +350,9 @@ struct dpu_hw_mdp *dpu_hw_mdptop_init(enum dpu_mdp idx,
mdp->caps = cfg;
_setup_mdp_ops(&mdp->ops, mdp->caps->features);
- rc = dpu_hw_blk_init(&mdp->base, DPU_HW_BLK_TOP, idx, &dpu_hw_ops);
- if (rc) {
- DPU_ERROR("failed to init hw blk %d\n", rc);
- goto blk_init_error;
- }
+ dpu_hw_blk_init(&mdp->base, DPU_HW_BLK_TOP, idx, &dpu_hw_ops);
return mdp;
-
-blk_init_error:
- kzfree(mdp);
-
- return ERR_PTR(rc);
}
void dpu_hw_mdp_destroy(struct dpu_hw_mdp *mdp)
--
2.18.0
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