Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/soc/qcom/cmd-db.c b/drivers/soc/qcom/cmd-db.c
index a6f6462..f6c3d17 100644
--- a/drivers/soc/qcom/cmd-db.c
+++ b/drivers/soc/qcom/cmd-db.c
@@ -101,8 +101,7 @@
static struct cmd_db_header *cmd_db_header;
-
-static inline void *rsc_to_entry_header(struct rsc_hdr *hdr)
+static inline const void *rsc_to_entry_header(const struct rsc_hdr *hdr)
{
u16 offset = le16_to_cpu(hdr->header_offset);
@@ -110,7 +109,7 @@
}
static inline void *
-rsc_offset(struct rsc_hdr *hdr, struct entry_header *ent)
+rsc_offset(const struct rsc_hdr *hdr, const struct entry_header *ent)
{
u16 offset = le16_to_cpu(hdr->data_offset);
u16 loffset = le16_to_cpu(ent->offset);
@@ -134,11 +133,11 @@
}
EXPORT_SYMBOL(cmd_db_ready);
-static int cmd_db_get_header(const char *id, struct entry_header *eh,
- struct rsc_hdr *rh)
+static int cmd_db_get_header(const char *id, const struct entry_header **eh,
+ const struct rsc_hdr **rh)
{
- struct rsc_hdr *rsc_hdr;
- struct entry_header *ent;
+ const struct rsc_hdr *rsc_hdr;
+ const struct entry_header *ent;
int ret, i, j;
u8 query[8];
@@ -146,9 +145,6 @@
if (ret)
return ret;
- if (!eh || !rh)
- return -EINVAL;
-
/* Pad out query string to same length as in DB */
strncpy(query, id, sizeof(query));
@@ -159,14 +155,13 @@
ent = rsc_to_entry_header(rsc_hdr);
for (j = 0; j < le16_to_cpu(rsc_hdr->cnt); j++, ent++) {
- if (memcmp(ent->id, query, sizeof(ent->id)) == 0)
- break;
- }
-
- if (j < le16_to_cpu(rsc_hdr->cnt)) {
- memcpy(eh, ent, sizeof(*ent));
- memcpy(rh, rsc_hdr, sizeof(*rh));
- return 0;
+ if (memcmp(ent->id, query, sizeof(ent->id)) == 0) {
+ if (eh)
+ *eh = ent;
+ if (rh)
+ *rh = rsc_hdr;
+ return 0;
+ }
}
}
@@ -186,69 +181,40 @@
u32 cmd_db_read_addr(const char *id)
{
int ret;
- struct entry_header ent;
- struct rsc_hdr rsc_hdr;
+ const struct entry_header *ent;
- ret = cmd_db_get_header(id, &ent, &rsc_hdr);
+ ret = cmd_db_get_header(id, &ent, NULL);
- return ret < 0 ? 0 : le32_to_cpu(ent.addr);
+ return ret < 0 ? 0 : le32_to_cpu(ent->addr);
}
EXPORT_SYMBOL(cmd_db_read_addr);
/**
* cmd_db_read_aux_data() - Query command db for aux data.
*
- * @id: Resource to retrieve AUX Data on.
- * @data: Data buffer to copy returned aux data to. Returns size on NULL
- * @len: Caller provides size of data buffer passed in.
+ * @id: Resource to retrieve AUX Data on
+ * @len: size of data buffer returned
*
- * Return: size of data on success, errno otherwise
+ * Return: pointer to data on success, error pointer otherwise
*/
-int cmd_db_read_aux_data(const char *id, u8 *data, size_t len)
+const void *cmd_db_read_aux_data(const char *id, size_t *len)
{
int ret;
- struct entry_header ent;
- struct rsc_hdr rsc_hdr;
- u16 ent_len;
-
- if (!data)
- return -EINVAL;
+ const struct entry_header *ent;
+ const struct rsc_hdr *rsc_hdr;
ret = cmd_db_get_header(id, &ent, &rsc_hdr);
if (ret)
- return ret;
+ return ERR_PTR(ret);
- ent_len = le16_to_cpu(ent.len);
- if (len < ent_len)
- return -EINVAL;
+ if (len)
+ *len = le16_to_cpu(ent->len);
- len = min_t(u16, ent_len, len);
- memcpy(data, rsc_offset(&rsc_hdr, &ent), len);
-
- return len;
+ return rsc_offset(rsc_hdr, ent);
}
EXPORT_SYMBOL(cmd_db_read_aux_data);
/**
- * cmd_db_read_aux_data_len - Get the length of the auxiliary data stored in DB.
- *
- * @id: Resource to retrieve AUX Data.
- *
- * Return: size on success, 0 on error
- */
-size_t cmd_db_read_aux_data_len(const char *id)
-{
- int ret;
- struct entry_header ent;
- struct rsc_hdr rsc_hdr;
-
- ret = cmd_db_get_header(id, &ent, &rsc_hdr);
-
- return ret < 0 ? 0 : le16_to_cpu(ent.len);
-}
-EXPORT_SYMBOL(cmd_db_read_aux_data_len);
-
-/**
* cmd_db_read_slave_id - Get the slave ID for a given resource address
*
* @id: Resource id to query the DB for version
@@ -258,15 +224,14 @@
enum cmd_db_hw_type cmd_db_read_slave_id(const char *id)
{
int ret;
- struct entry_header ent;
- struct rsc_hdr rsc_hdr;
+ const struct entry_header *ent;
u32 addr;
- ret = cmd_db_get_header(id, &ent, &rsc_hdr);
+ ret = cmd_db_get_header(id, &ent, NULL);
if (ret < 0)
return CMD_DB_HW_INVALID;
- addr = le32_to_cpu(ent.addr);
+ addr = le32_to_cpu(ent->addr);
return (addr >> SLAVE_ID_SHIFT) & SLAVE_ID_MASK;
}
EXPORT_SYMBOL(cmd_db_read_slave_id);
@@ -283,8 +248,8 @@
}
cmd_db_header = memremap(rmem->base, rmem->size, MEMREMAP_WB);
- if (IS_ERR_OR_NULL(cmd_db_header)) {
- ret = PTR_ERR(cmd_db_header);
+ if (!cmd_db_header) {
+ ret = -ENOMEM;
cmd_db_header = NULL;
return ret;
}