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-rw-r--r--drivers/opp/core.c11
-rw-r--r--drivers/opp/debugfs.c110
-rw-r--r--drivers/opp/opp.h15
3 files changed, 38 insertions, 98 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 57d88a275de0..fa15aa8e00b0 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -792,7 +792,6 @@ static struct opp_device *_add_opp_dev_unlocked(const struct device *dev,
struct opp_table *opp_table)
{
struct opp_device *opp_dev;
- int ret;
opp_dev = kzalloc(sizeof(*opp_dev), GFP_KERNEL);
if (!opp_dev)
@@ -804,10 +803,7 @@ static struct opp_device *_add_opp_dev_unlocked(const struct device *dev,
list_add(&opp_dev->node, &opp_table->dev_list);
/* Create debugfs entries for the opp_table */
- ret = opp_debug_register(opp_dev, opp_table);
- if (ret)
- dev_err(dev, "%s: Failed to register opp debugfs (%d)\n",
- __func__, ret);
+ opp_debug_register(opp_dev, opp_table);
return opp_dev;
}
@@ -1175,10 +1171,7 @@ int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,
new_opp->opp_table = opp_table;
kref_init(&new_opp->kref);
- ret = opp_debug_create_one(new_opp, opp_table);
- if (ret)
- dev_err(dev, "%s: Failed to register opp to debugfs (%d)\n",
- __func__, ret);
+ opp_debug_create_one(new_opp, opp_table);
if (!_opp_supported_by_regulators(new_opp, opp_table)) {
new_opp->available = false;
diff --git a/drivers/opp/debugfs.c b/drivers/opp/debugfs.c
index e6828e5f81b0..a1c57fe14de4 100644
--- a/drivers/opp/debugfs.c
+++ b/drivers/opp/debugfs.c
@@ -35,7 +35,7 @@ void opp_debug_remove_one(struct dev_pm_opp *opp)
debugfs_remove_recursive(opp->dentry);
}
-static bool opp_debug_create_supplies(struct dev_pm_opp *opp,
+static void opp_debug_create_supplies(struct dev_pm_opp *opp,
struct opp_table *opp_table,
struct dentry *pdentry)
{
@@ -50,30 +50,21 @@ static bool opp_debug_create_supplies(struct dev_pm_opp *opp,
/* Create per-opp directory */
d = debugfs_create_dir(name, pdentry);
- if (!d)
- return false;
+ debugfs_create_ulong("u_volt_target", S_IRUGO, d,
+ &opp->supplies[i].u_volt);
- if (!debugfs_create_ulong("u_volt_target", S_IRUGO, d,
- &opp->supplies[i].u_volt))
- return false;
+ debugfs_create_ulong("u_volt_min", S_IRUGO, d,
+ &opp->supplies[i].u_volt_min);
- if (!debugfs_create_ulong("u_volt_min", S_IRUGO, d,
- &opp->supplies[i].u_volt_min))
- return false;
+ debugfs_create_ulong("u_volt_max", S_IRUGO, d,
+ &opp->supplies[i].u_volt_max);
- if (!debugfs_create_ulong("u_volt_max", S_IRUGO, d,
- &opp->supplies[i].u_volt_max))
- return false;
-
- if (!debugfs_create_ulong("u_amp", S_IRUGO, d,
- &opp->supplies[i].u_amp))
- return false;
+ debugfs_create_ulong("u_amp", S_IRUGO, d,
+ &opp->supplies[i].u_amp);
}
-
- return true;
}
-int opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
+void opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
{
struct dentry *pdentry = opp_table->dentry;
struct dentry *d;
@@ -95,40 +86,23 @@ int opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
/* Create per-opp directory */
d = debugfs_create_dir(name, pdentry);
- if (!d)
- return -ENOMEM;
-
- if (!debugfs_create_bool("available", S_IRUGO, d, &opp->available))
- return -ENOMEM;
-
- if (!debugfs_create_bool("dynamic", S_IRUGO, d, &opp->dynamic))
- return -ENOMEM;
-
- if (!debugfs_create_bool("turbo", S_IRUGO, d, &opp->turbo))
- return -ENOMEM;
-
- if (!debugfs_create_bool("suspend", S_IRUGO, d, &opp->suspend))
- return -ENOMEM;
-
- if (!debugfs_create_u32("performance_state", S_IRUGO, d, &opp->pstate))
- return -ENOMEM;
- if (!debugfs_create_ulong("rate_hz", S_IRUGO, d, &opp->rate))
- return -ENOMEM;
+ debugfs_create_bool("available", S_IRUGO, d, &opp->available);
+ debugfs_create_bool("dynamic", S_IRUGO, d, &opp->dynamic);
+ debugfs_create_bool("turbo", S_IRUGO, d, &opp->turbo);
+ debugfs_create_bool("suspend", S_IRUGO, d, &opp->suspend);
+ debugfs_create_u32("performance_state", S_IRUGO, d, &opp->pstate);
+ debugfs_create_ulong("rate_hz", S_IRUGO, d, &opp->rate);
+ debugfs_create_ulong("clock_latency_ns", S_IRUGO, d,
+ &opp->clock_latency_ns);
- if (!opp_debug_create_supplies(opp, opp_table, d))
- return -ENOMEM;
-
- if (!debugfs_create_ulong("clock_latency_ns", S_IRUGO, d,
- &opp->clock_latency_ns))
- return -ENOMEM;
+ opp_debug_create_supplies(opp, opp_table, d);
opp->dentry = d;
- return 0;
}
-static int opp_list_debug_create_dir(struct opp_device *opp_dev,
- struct opp_table *opp_table)
+static void opp_list_debug_create_dir(struct opp_device *opp_dev,
+ struct opp_table *opp_table)
{
const struct device *dev = opp_dev->dev;
struct dentry *d;
@@ -137,36 +111,21 @@ static int opp_list_debug_create_dir(struct opp_device *opp_dev,
/* Create device specific directory */
d = debugfs_create_dir(opp_table->dentry_name, rootdir);
- if (!d) {
- dev_err(dev, "%s: Failed to create debugfs dir\n", __func__);
- return -ENOMEM;
- }
opp_dev->dentry = d;
opp_table->dentry = d;
-
- return 0;
}
-static int opp_list_debug_create_link(struct opp_device *opp_dev,
- struct opp_table *opp_table)
+static void opp_list_debug_create_link(struct opp_device *opp_dev,
+ struct opp_table *opp_table)
{
- const struct device *dev = opp_dev->dev;
char name[NAME_MAX];
- struct dentry *d;
opp_set_dev_name(opp_dev->dev, name);
/* Create device specific directory link */
- d = debugfs_create_symlink(name, rootdir, opp_table->dentry_name);
- if (!d) {
- dev_err(dev, "%s: Failed to create link\n", __func__);
- return -ENOMEM;
- }
-
- opp_dev->dentry = d;
-
- return 0;
+ opp_dev->dentry = debugfs_create_symlink(name, rootdir,
+ opp_table->dentry_name);
}
/**
@@ -177,20 +136,13 @@ static int opp_list_debug_create_link(struct opp_device *opp_dev,
* Dynamically adds device specific directory in debugfs 'opp' directory. If the
* device-opp is shared with other devices, then links will be created for all
* devices except the first.
- *
- * Return: 0 on success, otherwise negative error.
*/
-int opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table)
+void opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table)
{
- if (!rootdir) {
- pr_debug("%s: Uninitialized rootdir\n", __func__);
- return -EINVAL;
- }
-
if (opp_table->dentry)
- return opp_list_debug_create_link(opp_dev, opp_table);
-
- return opp_list_debug_create_dir(opp_dev, opp_table);
+ opp_list_debug_create_link(opp_dev, opp_table);
+ else
+ opp_list_debug_create_dir(opp_dev, opp_table);
}
static void opp_migrate_dentry(struct opp_device *opp_dev,
@@ -252,10 +204,6 @@ static int __init opp_debug_init(void)
{
/* Create /sys/kernel/debug/opp directory */
rootdir = debugfs_create_dir("opp", NULL);
- if (!rootdir) {
- pr_err("%s: Failed to create root directory\n", __func__);
- return -ENOMEM;
- }
return 0;
}
diff --git a/drivers/opp/opp.h b/drivers/opp/opp.h
index e24d81497375..810a85b9a66d 100644
--- a/drivers/opp/opp.h
+++ b/drivers/opp/opp.h
@@ -236,18 +236,17 @@ static inline void _of_opp_free_required_opps(struct opp_table *opp_table,
#ifdef CONFIG_DEBUG_FS
void opp_debug_remove_one(struct dev_pm_opp *opp);
-int opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table);
-int opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table);
+void opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table);
+void opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table);
void opp_debug_unregister(struct opp_device *opp_dev, struct opp_table *opp_table);
#else
static inline void opp_debug_remove_one(struct dev_pm_opp *opp) {}
-static inline int opp_debug_create_one(struct dev_pm_opp *opp,
- struct opp_table *opp_table)
-{ return 0; }
-static inline int opp_debug_register(struct opp_device *opp_dev,
- struct opp_table *opp_table)
-{ return 0; }
+static inline void opp_debug_create_one(struct dev_pm_opp *opp,
+ struct opp_table *opp_table) { }
+
+static inline void opp_debug_register(struct opp_device *opp_dev,
+ struct opp_table *opp_table) { }
static inline void opp_debug_unregister(struct opp_device *opp_dev,
struct opp_table *opp_table)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 19:59:28 +0100