[PATCH 05/42] state: Drop backend as extra struct type
Sascha Hauer
s.hauer at pengutronix.de
Fri Mar 31 00:03:09 PDT 2017
struct state_backend is embedded into struct state. This additional
indirection does not have any real gain. Drop it.
Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
common/state/backend.c | 48 +++++++++++++++++++++++-------------------------
common/state/state.c | 34 +++++++++++++++++-----------------
common/state/state.h | 23 ++++++-----------------
3 files changed, 46 insertions(+), 59 deletions(-)
diff --git a/common/state/backend.c b/common/state/backend.c
index 803390e2aa..1773392e8d 100644
--- a/common/state/backend.c
+++ b/common/state/backend.c
@@ -31,19 +31,18 @@ int state_save(struct state *state)
uint8_t *buf;
ssize_t len;
int ret;
- struct state_backend *backend = &state->backend;
if (!state->dirty)
return 0;
- ret = backend->format->pack(backend->format, state, &buf, &len);
+ ret = state->format->pack(state->format, state, &buf, &len);
if (ret) {
dev_err(&state->dev, "Failed to pack state with backend format %s, %d\n",
- backend->format->name, ret);
+ state->format->name, ret);
return ret;
}
- ret = state_storage_write(&backend->storage, buf, len);
+ ret = state_storage_write(&state->storage, buf, len);
if (ret) {
dev_err(&state->dev, "Failed to write packed state, %d\n", ret);
goto out;
@@ -71,20 +70,19 @@ int state_load(struct state *state)
uint8_t *buf;
ssize_t len;
int ret;
- struct state_backend *backend = &state->backend;
- ret = state_storage_read(&backend->storage, backend->format,
+ ret = state_storage_read(&state->storage, state->format,
state->magic, &buf, &len);
if (ret) {
dev_err(&state->dev, "Failed to read state with format %s, %d\n",
- backend->format->name, ret);
+ state->format->name, ret);
return ret;
}
- ret = backend->format->unpack(backend->format, state, buf, len);
+ ret = state->format->unpack(state->format, state, buf, len);
if (ret) {
dev_err(&state->dev, "Failed to unpack read data with format %s although verified, %d\n",
- backend->format->name, ret);
+ state->format->name, ret);
goto out;
}
@@ -95,17 +93,17 @@ out:
return ret;
}
-static int state_format_init(struct state_backend *backend,
+static int state_format_init(struct state *state,
struct device_d *dev, const char *backend_format,
struct device_node *node, const char *state_name)
{
int ret;
if (!strcmp(backend_format, "raw")) {
- ret = backend_format_raw_create(&backend->format, node,
+ ret = backend_format_raw_create(&state->format, node,
state_name, dev);
} else if (!strcmp(backend_format, "dtb")) {
- ret = backend_format_dtb_create(&backend->format, dev);
+ ret = backend_format_dtb_create(&state->format, dev);
} else {
dev_err(dev, "Invalid backend format %s\n",
backend_format);
@@ -143,7 +141,7 @@ static void state_format_free(struct state_backend_format *format)
* autoselect some backwardscompatible backend options
* @return 0 on success, -errno otherwise
*/
-int state_backend_init(struct state_backend *backend, struct device_d *dev,
+int state_backend_init(struct state *state, struct device_d *dev,
struct device_node *node, const char *backend_format,
const char *storage_path, const char *state_name, const
char *of_path, off_t offset, size_t max_size,
@@ -151,35 +149,35 @@ int state_backend_init(struct state_backend *backend, struct device_d *dev,
{
int ret;
- ret = state_format_init(backend, dev, backend_format, node, state_name);
+ ret = state_format_init(state, dev, backend_format, node, state_name);
if (ret)
return ret;
- ret = state_storage_init(&backend->storage, dev, storage_path, offset,
+ ret = state_storage_init(&state->storage, dev, storage_path, offset,
max_size, stridesize, storagetype);
if (ret)
goto out_free_format;
- backend->of_path = xstrdup(of_path);
+ state->of_backend_path = xstrdup(of_path);
return 0;
out_free_format:
- state_format_free(backend->format);
- backend->format = NULL;
+ state_format_free(state->format);
+ state->format = NULL;
return ret;
}
-void state_backend_set_readonly(struct state_backend *backend)
+void state_backend_set_readonly(struct state *state)
{
- state_storage_set_readonly(&backend->storage);
+ state_storage_set_readonly(&state->storage);
}
-void state_backend_free(struct state_backend *backend)
+void state_backend_free(struct state *state)
{
- state_storage_free(&backend->storage);
- if (backend->format)
- state_format_free(backend->format);
- free(backend->of_path);
+ state_storage_free(&state->storage);
+ if (state->format)
+ state_format_free(state->format);
+ free(state->of_path);
}
diff --git a/common/state/state.c b/common/state/state.c
index 6e6b3a6f08..62357fb248 100644
--- a/common/state/state.c
+++ b/common/state/state.c
@@ -328,21 +328,21 @@ static int of_state_fixup(struct device_node *root, void *ctx)
}
/* backend-type */
- if (!state->backend.format) {
+ if (!state->format) {
ret = -ENODEV;
goto out;
}
p = of_new_property(new_node, "backend-type",
- state->backend.format->name,
- strlen(state->backend.format->name) + 1);
+ state->format->name,
+ strlen(state->format->name) + 1);
if (!p) {
ret = -ENOMEM;
goto out;
}
/* backend phandle */
- backend_node = of_find_node_by_path_from(root, state->backend.of_path);
+ backend_node = of_find_node_by_path_from(root, state->of_backend_path);
if (!backend_node) {
ret = -ENODEV;
goto out;
@@ -353,9 +353,9 @@ static int of_state_fixup(struct device_node *root, void *ctx)
if (ret)
goto out;
- if (!strcmp("raw", state->backend.format->name)) {
+ if (!strcmp("raw", state->format->name)) {
struct digest *digest =
- state_backend_format_raw_get_digest(state->backend.format);
+ state_backend_format_raw_get_digest(state->format);
if (digest) {
p = of_new_property(new_node, "algo",
digest_name(digest),
@@ -367,19 +367,19 @@ static int of_state_fixup(struct device_node *root, void *ctx)
}
}
- if (state->backend.storage.name) {
+ if (state->storage.name) {
p = of_new_property(new_node, "backend-storage-type",
- state->backend.storage.name,
- strlen(state->backend.storage.name) + 1);
+ state->storage.name,
+ strlen(state->storage.name) + 1);
if (!p) {
ret = -ENOMEM;
goto out;
}
}
- if (state->backend.storage.stridesize) {
+ if (state->storage.stridesize) {
ret = of_property_write_u32(new_node, "backend-stridesize",
- state->backend.storage.stridesize);
+ state->storage.stridesize);
if (ret)
goto out;
}
@@ -408,7 +408,7 @@ void state_release(struct state *state)
of_unregister_fixup(of_state_fixup, state);
list_del(&state->list);
unregister_device(&state->dev);
- state_backend_free(&state->backend);
+ state_backend_free(state);
free(state->of_path);
free(state);
}
@@ -487,14 +487,14 @@ struct state *state_new_from_node(struct device_node *node, char *path,
dev_info(&state->dev, "No backend-storage-type found, using default.\n");
}
- ret = state_backend_init(&state->backend, &state->dev, node,
+ ret = state_backend_init(state, &state->dev, node,
backend_type, path, alias, of_path, offset,
max_size, stridesize, storage_type);
if (ret)
goto out_release_state;
if (readonly)
- state_backend_set_readonly(&state->backend);
+ state_backend_set_readonly(state);
ret = state_from_node(state, node, 1);
if (ret) {
@@ -569,10 +569,10 @@ void state_info(void)
list_for_each_entry(state, &state_list, list) {
printf("%-20s ", state->name);
- if (state->backend.format)
+ if (state->format)
printf("(backend: %s, path: %s)\n",
- state->backend.format->name,
- state->backend.of_path);
+ state->format->name,
+ state->of_backend_path);
else
printf("(no backend)\n");
}
diff --git a/common/state/state.h b/common/state/state.h
index ddf45239eb..cb248fc609 100644
--- a/common/state/state.h
+++ b/common/state/state.h
@@ -75,19 +75,6 @@ struct state_backend_storage {
bool readonly;
};
-/**
- * state_backend - State Backend object
- *
- * @format Backend format object
- * @storage Backend storage object
- * @of_path Path to the DT node
- */
-struct state_backend {
- struct state_backend_format *format;
- struct state_backend_storage storage;
- char *of_path;
-};
-
struct state {
struct list_head list; /* Entry to enqueue on list of states */
@@ -100,7 +87,9 @@ struct state {
unsigned int dirty;
unsigned int save_on_shutdown;
- struct state_backend backend;
+ struct state_backend_format *format;
+ struct state_backend_storage storage;
+ char *of_backend_path;
};
enum state_convert {
@@ -216,13 +205,13 @@ int state_backend_bucket_cached_create(struct device_d *dev,
struct state_variable *state_find_var(struct state *state, const char *name);
struct digest *state_backend_format_raw_get_digest(struct state_backend_format
*format);
-int state_backend_init(struct state_backend *backend, struct device_d *dev,
+int state_backend_init(struct state *state, struct device_d *dev,
struct device_node *node, const char *backend_format,
const char *storage_path, const char *state_name, const
char *of_path, off_t offset, size_t max_size,
uint32_t stridesize, const char *storagetype);
-void state_backend_set_readonly(struct state_backend *backend);
-void state_backend_free(struct state_backend *backend);
+void state_backend_set_readonly(struct state *state);
+void state_backend_free(struct state *state);
void state_storage_free(struct state_backend_storage *storage);
int state_backend_bucket_direct_create(struct device_d *dev, const char *path,
struct state_backend_storage_bucket **bucket,
--
2.11.0
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