-/* store the pages buffer info firmware from buf */
-static void fw_set_page_data(struct firmware_buf *buf, struct firmware *fw)
-{
- fw->priv = buf;
- fw->pages = buf->pages;
- fw->size = buf->size;
- fw->data = buf->data;
-
- pr_debug("%s: fw-%s buf=%p data=%p size=%u\n",
- __func__, buf->fw_id, buf, buf->data,
- (unsigned int)buf->size);
-}
-
-#ifdef CONFIG_PM_SLEEP
-static void fw_name_devm_release(struct device *dev, void *res)
-{
- struct fw_name_devm *fwn = res;
-
- if (fwn->magic == (unsigned long)&fw_cache)
- pr_debug("%s: fw_name-%s devm-%p released\n",
- __func__, fwn->name, res);
-}
-
-static int fw_devm_match(struct device *dev, void *res,
- void *match_data)
-{
- struct fw_name_devm *fwn = res;
-
- return (fwn->magic == (unsigned long)&fw_cache) &&
- !strcmp(fwn->name, match_data);
-}
-
-static struct fw_name_devm *fw_find_devm_name(struct device *dev,
- const char *name)
-{
- struct fw_name_devm *fwn;
-
- fwn = devres_find(dev, fw_name_devm_release,
- fw_devm_match, (void *)name);
- return fwn;
-}
-
-/* add firmware name into devres list */
-static int fw_add_devm_name(struct device *dev, const char *name)
-{
- struct fw_name_devm *fwn;
-
- fwn = fw_find_devm_name(dev, name);
- if (fwn)
- return 1;
-
- fwn = devres_alloc(fw_name_devm_release, sizeof(struct fw_name_devm) +
- strlen(name) + 1, GFP_KERNEL);
- if (!fwn)
- return -ENOMEM;
-
- fwn->magic = (unsigned long)&fw_cache;
- strcpy(fwn->name, name);
- devres_add(dev, fwn);
-
- return 0;
-}
-#else
-static int fw_add_devm_name(struct device *dev, const char *name)
-{
- return 0;
-}
-#endif
-
-static void _request_firmware_cleanup(const struct firmware **firmware_p)
-{
- release_firmware(*firmware_p);
- *firmware_p = NULL;
-}
-
-static struct firmware_priv *
-_request_firmware_prepare(const struct firmware **firmware_p, const char *name,
- struct device *device, bool uevent, bool nowait)
-{
- struct firmware *firmware;
- struct firmware_priv *fw_priv = NULL;
- struct firmware_buf *buf;
- int ret;
-
- if (!firmware_p)
- return ERR_PTR(-EINVAL);
-
- *firmware_p = firmware = kzalloc(sizeof(*firmware), GFP_KERNEL);
- if (!firmware) {
- dev_err(device, "%s: kmalloc(struct firmware) failed\n",
- __func__);
- return ERR_PTR(-ENOMEM);
- }
-
- if (fw_get_builtin_firmware(firmware, name)) {
- dev_dbg(device, "firmware: using built-in firmware %s\n", name);
- return NULL;
- }
-
- ret = fw_lookup_and_allocate_buf(name, &fw_cache, &buf);
- if (!ret)
- fw_priv = fw_create_instance(firmware, name, device,
- uevent, nowait);
-
- if (IS_ERR(fw_priv) || ret < 0) {
- kfree(firmware);
- *firmware_p = NULL;
- return ERR_PTR(-ENOMEM);
- } else if (fw_priv) {
- fw_priv->buf = buf;
-
- /*
- * bind with 'buf' now to avoid warning in failure path
- * of requesting firmware.
- */
- firmware->priv = buf;
- return fw_priv;
- }
-
- /* share the cached buf, which is inprogessing or completed */
- check_status:
- mutex_lock(&fw_lock);
- if (test_bit(FW_STATUS_ABORT, &buf->status)) {
- fw_priv = ERR_PTR(-ENOENT);
- firmware->priv = buf;
- _request_firmware_cleanup(firmware_p);
- goto exit;
- } else if (test_bit(FW_STATUS_DONE, &buf->status)) {
- fw_priv = NULL;
- fw_set_page_data(buf, firmware);
- goto exit;
- }
- mutex_unlock(&fw_lock);
- wait_for_completion(&buf->completion);
- goto check_status;
-
-exit:
- mutex_unlock(&fw_lock);
- return fw_priv;
-}
-