MAX_READ_BLOCK_LENGTH
unsigned char err_data[MAX_READ_BLOCK_LENGTH];
if (err_length > MAX_READ_BLOCK_LENGTH)
err_length = MAX_READ_BLOCK_LENGTH;
memset(err_data, 0x00, MAX_READ_BLOCK_LENGTH);
return sysfs_emit(buf, "%*phN\n", MAX_READ_BLOCK_LENGTH, err_data);