122  * Internal VPD "blob" APIs for accumulating ibm,get-vpd results into
130 static bool vpd_blob_has_data(const struct vpd_blob *blob)  in vpd_blob_has_data()  argument
132 	return blob->data && blob->len;  in vpd_blob_has_data()
135 static void vpd_blob_free(const struct vpd_blob *blob)  in vpd_blob_free()  argument
137 	if (blob) {  in vpd_blob_free()
138 		kvfree(blob->data);  in vpd_blob_free()
139 		kfree(blob);  in vpd_blob_free()
145  * @blob: The blob to extend.
146  * @data: The new data to append to @blob.
152 static int vpd_blob_extend(struct vpd_blob *blob, const char *data, size_t len)  in vpd_blob_extend()  argument
154 	const size_t new_len = blob->len + len;  in vpd_blob_extend()
155 	const size_t old_len = blob->len;  in vpd_blob_extend()
156 	const char *old_ptr = blob->data;  in vpd_blob_extend()
164 	blob->data = new_ptr;  in vpd_blob_extend()
165 	blob->len = new_len;  in vpd_blob_extend()
171  * @generator: Function that supplies the blob data.
185 	struct vpd_blob *blob;  in vpd_blob_generate()  local
190 	blob  = kzalloc(sizeof(*blob), GFP_KERNEL_ACCOUNT);  in vpd_blob_generate()
191 	if (!blob)  in vpd_blob_generate()
195 		err = vpd_blob_extend(blob, buf, len);  in vpd_blob_generate()
197 	if (err != 0 || !vpd_blob_has_data(blob))  in vpd_blob_generate()
200 	return blob;  in vpd_blob_generate()
202 	vpd_blob_free(blob);  in vpd_blob_generate()
355 	const struct vpd_blob *blob;  in papr_vpd_run_sequence()  local
359 	blob = vpd_blob_generate(vpd_sequence_fill_work_area, &seq);  in papr_vpd_run_sequence()
360 	if (!blob)  in papr_vpd_run_sequence()
365 		vpd_blob_free(blob);  in papr_vpd_run_sequence()
369 	return blob;  in papr_vpd_run_sequence()
376  * Run VPD sequences against @loc_code until a blob is successfully
381  * Return: A fully populated VPD blob when successful. Encoded error
386 	const struct vpd_blob *blob;  in papr_vpd_retrieve()  local
396 		blob = papr_vpd_run_sequence(loc_code);  in papr_vpd_retrieve()
397 		if (!IS_ERR(blob)) /* Success. */  in papr_vpd_retrieve()
399 		if (PTR_ERR(blob) != -EAGAIN) /* Hard error. */  in papr_vpd_retrieve()
405 	return blob;  in papr_vpd_retrieve()
410 	const struct vpd_blob *blob = file->private_data;  in papr_vpd_handle_read()  local
413 	if (!vpd_blob_has_data(blob)) {  in papr_vpd_handle_read()
418 	return simple_read_from_buffer(buf, size, off, blob->data, blob->len);  in papr_vpd_handle_read()
423 	const struct vpd_blob *blob = file->private_data;  in papr_vpd_handle_release()  local
425 	vpd_blob_free(blob);  in papr_vpd_handle_release()
432 	const struct vpd_blob *blob = file->private_data;  in papr_vpd_handle_seek()  local
434 	return fixed_size_llseek(file, off, whence, blob->len);  in papr_vpd_handle_seek()
450  * @ulc and instantiates an immutable VPD "blob" for it. The blob is
452  * backing the blob is freed when the file is released.
464 	const struct vpd_blob *blob;  in papr_vpd_create_handle()  local
475 	blob = papr_vpd_retrieve(&klc);  in papr_vpd_create_handle()
476 	if (IS_ERR(blob))  in papr_vpd_create_handle()
477 		return PTR_ERR(blob);  in papr_vpd_create_handle()
486 				  (void *)blob, O_RDONLY);  in papr_vpd_create_handle()
498 	vpd_blob_free(blob);  in papr_vpd_create_handle()